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LPC2114/2124/2212/2214 使用指南

1.介绍 .......................................................................................................................................... 10

1.1 概述................................................................................................................................. 10

1.2 特性................................................................................................................................. 10

1.3 应用................................................................................................................................. 11

1.4 器件信息......................................................................................................................... 11

1.5 结构概述......................................................................................................................... 11

1.6 ARM7TDMI-S 处理器 .................................................................................................... 12

1.7 片内 FLASH 程序存储器 .............................................................................................. 12

1.8 片内静态 RAM............................................................................................................... 12

1.9 LPC2114/2124/2212/2214 寄存器 .................................................................................. 13

2. LPC2114/2124/2212/2214 存储器寻址............................................................................... 22

2.1 存储器映射..................................................................................................................... 22

2.2 LPC2114/2124/2212/2214 存储器重新映射和 BOOT BLOCK.................................... 26

2.2.1 存储器映射概念和操作模式.............................................................................. 26

2.2.2 存储器的重新映射..............................................................................................26

2.3 预取指中止和数据中止异常......................................................................................... 28

3. 外部存储器控制器（EMC）.............................................................................................. 28

3.1 特性................................................................................................................................. 28

3.2 概述................................................................................................................................. 29

3.3 管脚描述......................................................................................................................... 29

3.4 寄存器描述..................................................................................................................... 29

3.4.1 存储器组配置寄存器 0-3（BCFG0-3 － 0xFFE00000-0C） ......................... 30

3.5 外部存储器接口............................................................................................................. 31

3.6 典型总线时序................................................................................................................. 33

3.7 外部存储器选择............................................................................................................. 33

4. 系统控制模块

....................................................................................................................... 34

4.1 系统控制模块功能汇总................................................................................................. 34

4.2 管脚描述......................................................................................................................... 34

4.3 寄存器描述..................................................................................................................... 35

4.4 晶体振荡器..................................................................................................................... 35

4.5 外部中断输入................................................................................................................. 38

4.5.1 寄存器描述.......................................................................................................... 38

4.5.2 外部中断标志寄存器（EXTINT - 0xE01FC140） ........................................... 38

4.5.3 外部中断唤醒寄存器（EXTWAKE - 0xE01FC144） ...................................... 39

4.5.4 外部中断方式寄存器（EXTMODE – 0xE01FC148） ..................................... 40

4.5.5 外部中断极性寄存器（EXTPOLAR – 0xE01FC14C） ................................... 40

4.5.6 多个外部中断管脚.............................................................................................. 41

4.6 存储器映射控制............................................................................................................. 41

4.6.1 存储器映射控制寄存器（MEMMAP – 0xE01FC040）................................... 41

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4.6.2 存储器映射控制的使用注意事项...................................................................... 42

4.7 PLL（锁相环）............................................................................................................... 42

4.7.1 寄存器描述.......................................................................................................... 43

4.7.2 PLL 控制寄存器（PLLCON – 0xE01FC080）.................................................. 44

4.7.3 PLL 配置寄存器（PLLCFG – 0xE01FC084）................................................... 44

4.7.4 PLL 状态寄存器（PLLSTAT - 0xE01FC088） .................................................. 44

4.7.5 PLL 中断............................................................................................................... 45

4.7.6 PLL 模式............................................................................................................... 45

4.7.7 PLL 馈送寄存器（PLLFEED – 0xE01FC08C）................................................ 45

4.7.8 PLL 和掉电模式................................................................................................... 46

4.7.9 PLL 频率计算....................................................................................................... 46

4.7.10 确定 PLL 设定的过程....................................................................................... 46

4.7.11 PLL 举例............................................................................................................. 47

4.8 功率控制......................................................................................................................... 47

4.8.1 寄存器描述.......................................................................................................... 48

4.8.2 功率控制寄存器（PCON – 0xE01FC0C0） ..................................................... 48

4.8.3 外设功率控制寄存器（PCONP – 0xE01FC0C4） ........................................... 48

4.9 功率控制注意事项......................................................................................................... 49

4.10 复位............................................................................................................................... 49

4.11 VPB 分频器 ................................................................................................................... 51

4.11.1 VPBDIV 寄存器（VPBDIV - 0xE01FC100）.................................................. 51

4.12 唤醒定时器................................................................................................................... 52

5. 存储器加速模块（MAM）................................................................................................. 53

5.1 介绍................................................................................................................................. 53

5.1.1 存储器加速器模块.............................................................................................. 53

5.1.2 Flash 存储器组

..................................................................................................... 54

5.1.3 指令锁存和数据锁存.......................................................................................... 54

5.1.4 Flash 编程问题 ..................................................................................................... 54

5.2 存储器加速器模块的操作模式..................................................................................... 55

5.3 MAM 配置....................................................................................................................... 55

5.4 寄存器描述..................................................................................................................... 55

5.4.1 MAM 控制寄存器（MAMCR - 0xE01FC000）................................................ 56

5.4.2 MAM 定时寄存器（MAMTIM - 0xE01FC004）.............................................. 56

5.5 MAM 使用注意事项....................................................................................................... 57

6. 向量中断控制器（VIC）.................................................................................................... 57

6.1 特性................................................................................................................................. 57

6.2 描述................................................................................................................................. 57

6.3 寄存器描述..................................................................................................................... 59

6.4 VIC 寄存器...................................................................................................................... 60

6.4.1 软件中断寄存器（VICSoftInt - 0xFFFFF018，读/写）................................... 60

6.4.2 软件中断清零寄存器（VICSoftIntClear - 0xFFFFF01C，只写） .................. 60

6.4.3 所有中断状态寄存器（VICRawIntr - 0xFFFFF008，只读）.......................... 61

6.4.4 中断使能寄存器（VICIntEnable - 0xFFFFF010，读/写） .............................. 61

6.4.5 中断使能清零寄存器（VICIntEnClear - 0xFFFFF014，只写） ..................... 61

广州周立功单片机发展有限公司 Tel: (020)38730976 38730977 Fax: 38730925 http://www.zlgmcu.com

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6.4.6 中断选择寄存器（VICIntSelect - 0xFFFFF00C，读/写）............................... 61

6.4.7 IRQ 状态寄存器（VICIRQStatus - 0xFFFFF000，只读） ............................... 61

6.4.8 FIQ 状态寄存器（VICFIQStatus - 0xFFFFF004，只读） ................................ 62

6.4.9 向量控制寄存器 0-15（VICVectCnt l0-15 - 0xFFFFF200-23C，读/写） ....... 62

6.4.10 向量地址寄存器 0-15（VICVectAddr0-15 - 0xFFFFF100-13C，读/写）..... 62

6.4.11 默认向量地址寄存器（VICDefVectAddr - 0xFFFFF034，读/写）............... 62

6.4.12 向量地址寄存器（VICVectAddr - 0xFFFFF030，读/写） ............................ 63

6.4.13 保护使能寄存器（VICProtection - 0xFFFFF020，读/写） ........................... 63

6.5 中断源............................................................................................................................. 63

6.6 伪中断............................................................................................................................. 65

6.6.1 伪中断的详述和个案.......................................................................................... 66

6.7 VIC 使用事项.................................................................................................................. 67

7. 管脚配置 .............................................................................................................................. 69

7.1 LPC2114/2124 的管脚分布 ............................................................................................ 69

7.2 LPC2114/2124 的管脚描述 ............................................................................................ 69

7.3 LPC2212/2214 的管脚分布 ............................................................................................ 74

7.4 LPC2212/2214 的管脚描述 ............................................................................................ 74

8. 管脚连接模块....................................................................................................................... 80

8.1 应用................................................................................................................................. 80

8.2 描述................................................................................................................................. 81

8.3 寄存器描述..................................................................................................................... 81

8.3.1 管脚功能选择寄存器 0（PINSEL0 - 0xE002C000） ....................................... 81

8.3.2 管脚功能选择寄存器 1（PINSEL1 - 0xE002C004） ....................................... 82

8.3.3 管脚功能选择寄存器 2（PINSEL2 - 0xE002C014） ....................................... 83

8.3.4 管脚功能选择寄存器值...................................................................................... 84

8.4 144 脚封装的引导控制................................................................................................... 85

9. GPIO .................................................................................................................................... 85

9.1 特性................................................................................................................................. 85

9.2 应用................................................................................................................................. 85

9.3 管脚描述......................................................................................................................... 85

9.4 寄存器描述..................................................................................................................... 86

9.4.1 GPIO 管脚值寄存器（IO0PIN - 0xE0028000,IO1PIN – 0xE0028010，IO2PIN –

0xE0028020，IO3PIN – 0xE0028030） ...................................................................... 86

9.4.2 GPIO 输出置位寄存器（IO0SET - 0xE0028004，IO1SET – 0xE0028014，

IO2SET – 0xE0028024，IO3SET – 0xE0028034）..................................................... 88

9.4.3 GPIO 输出清零寄存器（IO0CLR - 0xE002800C，IO1CLR – 0xE002801C，

IO2CLR – 0xE002802C，IO3CLR – 0xE002803C）.................................................. 88

9.4.4 GPIO 方向寄存器（IO0DIR - 0xE0028008，IO1DIR – 0xE0028018,IO2DIR –

0xE0028028,IO3DIR – 0xE0028038）......................................................................... 88

9.5 GPIO 使用注意事项 ....................................................................................................... 89

10. UART 0 .............................................................................................................................. 89

10.1 特性............................................................................................................................... 89

10.2 管脚描述....................................................................................................................... 89

10.3

寄存器描述................................................................................................................... 90

广州周立功单片机发展有限公司 Tel: (020)38730976 38730977 Fax: 38730925 http://www.zlgmcu.com

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10.3.1 UART0 接收器缓存寄存器（U0RBR - 0xE000C000，DLAB=0，只读） ... 90

10.3.2 UART0 发送器保持寄存器（U0THR - 0xE000C000，DLAB=0，只写） ... 91

10.3.3 UART0 除数锁存 LSB 寄存器（U0DLL - 0xE000C000，DLAB=1） .......... 91

10.3.4 UART0 除数锁存 MSB 寄存器（U0DLM - 0xE000C004，DLAB=1）........ 91

10.3.5 UART0 中断使能寄存器（U0IER - 0xE000C004，DLAB=0）..................... 91

10.3.6 UART0 中断标识寄存器（U0IIR - 0xE000C008，只读）............................. 92

10.3.7 UART0 FIFO 控制寄存器（U0FCR - 0xE000C008）..................................... 93

10.3.8 UART0 线控制寄存器（U0LCR - 0xE000C00C）.......................................... 94

10.3.9 UART0 线状态寄存器（U0LSR - 0xE000C014，只读）............................... 94

10.3.10 UART0 高速缓存寄存器（U0SCR – 0Xe000C01C） ................................... 95

10.4 结构............................................................................................................................... 95

11. UART1................................................................................................................................ 97

11.1 特性............................................................................................................................... 97

11.2 管脚描述....................................................................................................................... 97

11.3 寄存器描述................................................................................................................... 98

11.3.1 UART1 接收器缓存寄存器（U1RBR - 0xE0010000，DLAB=0，只读）.... 98

11.3.2 UART1 发送器保持寄存器（U1THR - 0xE0010000，DLAB=0，只写）.... 99

11.3.3 UART1 除数锁存 LSB 寄存器（U1DLL - 0xE0010000，

DLAB=1）........... 99

11.3.4 UART1 除数锁存 MSB 寄存器（U1DLM - 0xE0010004，DLAB=1）......... 99

11.3.5 UART1 中断使能寄存器（U1IER - 0xE0010004，DLAB=0） ..................... 99

11.3.6 UART1 中断标识寄存器（U1IIR - 0xE0010008，只读）............................ 100

11.3.7 UART1 FIFO 控制寄存器（U1FCR - 0xE0010008）.................................... 101

11.3.8 UART1 线控制寄存器（U1LCR - 0xE001000C） ........................................ 102

11.3.9 UART1 Modem 控制寄存器（U1MCR - 0xE0010010）............................... 102

11.3.10 UART1 线状态寄存器（U1LSR – 0Xe0010014，只读）........................... 103

11.3.11 UART1 Modem 状态寄存器（U1MSR - 0x0E0010018） ........................... 104

11.3.12 UART1 高速缓存寄存器（U1SCR - 0xE001001C）................................... 105

11.4 结构............................................................................................................................. 105

12. I

C 接口............................................................................................................................ 106

12.1 特性............................................................................................................................. 106

12.2 应用............................................................................................................................. 107

12.3 描述............................................................................................................................. 107

12.3.1 I

C 操作模式 .................................................................................................... 107

12.3.1.1 主发送器模式：................................................................................... 107

12.3.1.2 主接收器模式....................................................................................... 108

12.3.1.3 从接收器模式....................................................................................... 109

12.3.1.4 从发送器模式....................................................................................... 110

12.4 管脚描述..................................................................................................................... 110

12.5 寄存器描述..................................................................................................................111

12.5.1 I

C 控制置位寄存器（I2CONSET - 0xE001C000） ......................................111

12.5.2 I

C 控制清零寄存器（I2CONCLR – 0xE001C018） .................................... 112

12.5.3 I

C 状态寄存器（I2STAT - 0xE001C004）.................................................... 113

12.5.4 I

C 数据寄存器（I2DAT - 0xE001C008） ..................................................... 113

12.5.5 I

C 从地址寄存器（I2ADR - 0xE001C00C）................................................ 113

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12.5.6 I

C SCL 占空比寄存器（I2SCLH - 0xE001C010 和 I2SCLL - 0xE001C014）113

13. SPI 接口 ........................................................................................................................... 116

13.1 特性............................................................................................................................. 116

13.2 描述............................................................................................................................. 116

13.2.1 SPI 概述............................................................................................................ 116

13.2.2 SPI 数据传输.................................................................................................... 116

13.2.3 SPI 外设描述.................................................................................................... 117

13.2.3.1 概述....................................................................................................... 117

13.2.3.2 主机操作............................................................................................... 118

13.2.3.3 从机操作............................................................................................... 118

13.2.3.4 异常状况............................................................................................... 119

13.3 管脚描述..................................................................................................................... 120

13.4 寄存器描述................................................................................................................. 120

13.4.1 SPI 控制寄存器（S0SPCR - 0xE0020000, S1SPCR - 0xE0030000）........... 121

13.4.2 SPI 状态寄存器（S0SPSR - 0xE0020004, S1SPSR - 0xE0030004）............ 121

13.4.3 SPI 数据寄存器（S0SPDR - 0xE0020008,S1SPDR – 0xE0030008）........... 121

13.4.4 SPI 时钟计数寄存器（S0SPCCR - 0xE002000C，S1SPCCR – 0xE003000C）

...................................................................................................................................... 122

13.4.5 SPI 中断寄存器（S0SPINT - 0xE002001C,S1SPINT – 0xE003001C） ....... 122

13.5 结构............................................................................................................................. 122

14. 定时器 0 和定时器 1........................................................................................................ 123

14.1 特性............................................................................................................................. 123

14.2 应用............................................................................................................................. 123

14.3 描述............................................................................................................................. 124

14.4 管脚描述

..................................................................................................................... 124

14.5 寄存器描述................................................................................................................. 124

14.5.1 中断寄存器（IR: 定时器 0 - T0IR：0xE00040000；定时器 1 - T1IR：

0xE0008000） ............................................................................................................. 125

14.5.2 定时器控制寄存器（TCR: 定时器 0 – T0TCR：0xE0004004；定时器 1 –

T1TCR：0xE0008004） ............................................................................................. 126

14.5.3 定时器计数器（TC: 定时器 0 – T0TC：0xE0004008；定时器 1 – T1TC：

0xE0008008） ............................................................................................................. 126

14.5.4 预分频寄存器（PR: 定时器 0 – T0PR：0xE000400C；定时器 1 – T1PR：

0xE000800C）............................................................................................................. 126

14.5.5 预分频计数器寄存器（PC: 定时器 0 – T0PC：0xE0004010；定时器 1 –

T1PC：0xE0008010）................................................................................................ 126

14.5.6 匹配寄存器（MR0 - MR3） .......................................................................... 127

14.5.7 匹配控制寄存器（MCR: 定时器 0 – T0MCR：0xE0004014；定时器 1 –

T1MCR：0xE00080014）.......................................................................................... 127

14.5.8 捕获寄存器（CR0 - CR3）............................................................................ 127

14.5.9 捕获控制寄存器（CCR: 定时器 0 – T0CCR：

0xE0004028；定时器 1 –

T1CCR：0xE0008028）............................................................................................. 127

14.5.10 外部匹配寄存器（EMR: 定时器 0 – T0EMR：0xE000403C；定时器 1 –

T1EMR：0xE0008003C）.......................................................................................... 128

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