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LPC2101/02/03 使用指南
目录
目录
第 1 章 概述............................................................................................................................................1
1.1 简介...............................................................................................................................................1
1.2 特性...............................................................................................................................................1
1.3 应用...............................................................................................................................................2
1.4 器件信息.......................................................................................................................................2
1.5 结构概述.......................................................................................................................................2
1.6 ARM7TDMI-S 处理器 ..................................................................................................................2
1.7 片内 FLASH 存储器系统...............................................................................................................3
1.8 片内静态 RAM(SRAM) ...............................................................................................................3
1.9 方框图...........................................................................................................................................4
第 2 章 LPC2101/02/03 存储器寻址.....................................................................................................5
2.1 存储器映射 ...................................................................................................................................5
2.2 LPC2101/02/03 存储器重新映射和引导模块..............................................................................8
2.2.1 存储器映射概念和操作模式................................................................................................8
2.2.2 存储器的重新映射................................................................................................................9
2.3 预取指中止和数据中止异常 .....................................................................................................10
第 3 章 系统控制模块..........................................................................................................................12
3.1 系统控制模块功能汇总 .............................................................................................................12
3.2 管脚描述.....................................................................................................................................12
3.3 寄存器描述 .................................................................................................................................13
3.4 晶体振荡器 .................................................................................................................................13
3.5 外部中断输入 .............................................................................................................................15
3.5.1 寄存器描述..........................................................................................................................15
3.5.2 外部中断标志寄存器（EXTINT - 0xE01F C140） ..........................................................15
3.5.3 中断唤醒寄存器（INTWAKE - 0xE01F C144） ..............................................................16
3.5.4 外部中断方式寄存器（EXTMODE – 0xE01F C148） ....................................................17
3.5.5 外部中断极性寄存器（EXTPOLAR – 0xE01F C14C） ..................................................17
3.6 其它系统控制 .............................................................................................................................18
3.6.1 系统控制和状态标志寄存器 (SCS – 0xE01F C1A0) .......................................................18
3.7 存储器映射控制 .........................................................................................................................19
3.7.1 存储器映射控制寄存器（MEMMAP – 0xE01F C040）..................................................19
3.7.2 存储器映射控制的使用注意事项......................................................................................19
3.8 锁相环（PLL）..........................................................................................................................19
3.8.1 寄存器描述..........................................................................................................................20
3.8.2 PLL 控制寄存器（PLLCON – 0xE01F C080）.................................................................21
3.8.3 PLL 配置寄存器（PLLCFG – 0xE01F C084）..................................................................21
3.8.4 PLL 状态寄存器（PLLSTAT - 0xE01F C088）.................................................................21
3.8.5 PLL 中断...............................................................................................................................22
3.8.6 PLL 模式...............................................................................................................................22
3.8.7 PLL 馈送寄存器（PLLFEED – 0xE01F C08C）...............................................................22
目录
3.8.8 PLL 和掉电模式...................................................................................................................23
3.8.9 PLL 频率计算.......................................................................................................................23
3.8.10 确定 PLL 设定的过程.......................................................................................................23
3.8.11 PLL 配置举例.....................................................................................................................24
3.9 功率控制.....................................................................................................................................24
3.9.1 寄存器描述..........................................................................................................................25
3.9.2 功率控制寄存器（PCON – 0xE01F COCO）...................................................................25
3.9.3 外设功率控制寄存器（PCONP – 0xE01F COC4）..........................................................25
3.9.4 功率控制注意事项..............................................................................................................26
3.10 复位...........................................................................................................................................26
3.10.1 复位源识别寄存器（RSIR – 0xE01F C180）.................................................................27
3.11 APB 分频器................................................................................................................................28
3.11.1 寄存器描述........................................................................................................................28
3.11.2 APBDIV 寄存器（APBDIV - 0xE01F C100）.................................................................28
3.12 唤醒定时器 ...............................................................................................................................29
3.13 代码安全 VS.调试 .....................................................................................................................29
第 4 章 存储器加速模块（MAM）....................................................................................................30
4.1 简介.............................................................................................................................................30
4.2 操作.............................................................................................................................................30
4.3 MAM 模块...................................................................................................................................30
4.3.1 Flash 存储器组.....................................................................................................................31
4.3.2 指令锁存和数据锁存..........................................................................................................31
4.3.3 Flash 编程问题.....................................................................................................................31
4.4 MAM 的操作模式.......................................................................................................................32
4.5 MAM 配置...................................................................................................................................32
4.6 寄存器描述 .................................................................................................................................33
4.7 MAM 控制寄存器（MAMCR – 0XE01F C000） ......................................................................33
4.8 MAM 定时寄存器（MAMTIM – 0XE01F C004） ....................................................................33
4.9 MAM 使用注意事项...................................................................................................................34
第 5 章 向量中断控制器（VIC）.......................................................................................................35
5.1 特性.............................................................................................................................................35
5.2 描述.............................................................................................................................................35
5.3 寄存器描述 .................................................................................................................................35
5.4 VIC 寄存器 ..................................................................................................................................37
5.4.1 软件中断寄存器（VICSoftInt - 0xFFFF F018）...............................................................37
5.4.2 软件中断清零寄存器（VICSoftIntClear - 0xFFFF F01C）..............................................38
5.4.3 原始中断状态寄存器（VICRawIntr - 0xFFFF F008）.....................................................38
5.4.4 中断使能寄存器（VICIntEnable - 0xFFFF F010） ..........................................................39
5.4.5 中断使能清零寄存器（VICIntEnClear - 0xFFFF F014） ................................................40
5.4.6 中断选择寄存器（VICIntSelect - 0xFFFF F00C）...........................................................40
5.4.7 IRQ 状态寄存器（VICIRQStatus - 0xFFFF F000） ..........................................................41
5.4.8 FIQ 状态寄存器（VICFIQStatus - 0xFFFF F004） ...........................................................41
5.4.9 向量控制寄存器 0-15（VICVectCntl 0-15 - 0xFFFF F200-23C） ...................................42
目录
5.4.10 向量地址寄存器 0-15（VICVectAddr0-15 - 0xFFFF F100-13C）.................................42
5.4.11 默认向量地址寄存器（VICDefVectAddr - 0xFFFF F034）...........................................43
5.4.12 向量地址寄存器（VICVectAddr - 0xFFFF F030）.........................................................43
5.4.13 保护使能寄存器（VICProtection - 0xFFFF F020） .......................................................43
5.5 中断源.........................................................................................................................................43
5.6 伪中断.........................................................................................................................................45
5.6.1 伪中断的详述和个案..........................................................................................................46
5.6.2 解决方案..............................................................................................................................47
5.6.3 方案 1：在写 CPSR 来禁止 IRQ 过程中检测接收到的 IRQ...........................................47
5.6.4 方案 2：分别使用两条写 CPSR 的指令来禁能 IRQ 和 FIQ ...........................................47
5.6.5 方案 3：在 IRQ 处理程序的开始重新使能 FIQ...............................................................47
5.7 VIC 使用事项 ..............................................................................................................................48
第 6 章 管脚配置..................................................................................................................................49
6.1 LPC2101/2102/2103 的管脚配置................................................................................................49
6.2 LPC2101/02/03 的管脚描述........................................................................................................51
第 7 章 管脚连接模块..........................................................................................................................55
7.1 特性.............................................................................................................................................55
7.2 应用.............................................................................................................................................55
7.3 描述.............................................................................................................................................55
7.4 寄存器描述 .................................................................................................................................55
7.4.1 管脚功能选择寄存器 0（PINSEL0 - 0xE002 C000） ......................................................55
7.4.2 管脚功能选择寄存器 1（PINSEL1 - 0xE002 C004） ......................................................57
7.4.3 管脚功能选择寄存器值......................................................................................................59
第 8 章 通用输入/输出口(GPIO)........................................................................................................60
8.1 特性.............................................................................................................................................60
8.2 应用.............................................................................................................................................60
8.3 管脚描述.....................................................................................................................................60
8.4 寄存器描述 .................................................................................................................................60
8.4.1 GPIO 端口 0 方向寄存器（IODIR, 端口 0：IO0DIR - 0xE002 8008；FIODIR, 端口 0：
FIO0DIR – 0x3FFF C000） ..........................................................................................................62
8.4.2 高速 GPIO 端口 0 屏蔽寄存器 (FIOMASK, 端口 0：FIO0MASK – 0x3FFF C010) ....63
8.4.3 GPIO 端口 0 管脚值寄存器（IOPIN, 端口 0：IO0PIN - 0xE002 8000；FIOPIN, 端口 0：
FIO0PIN - 0x3FFF C014） ...........................................................................................................64
8.4.4 GPIO 端口 0 输出置位寄存器（IOSET,端口 0：IO0SET - 0xE002 8004；FIOSET,端口 0：
FIO0SET - 0x3FFF C018）...........................................................................................................65
8.4.5 GPIO 端口 0 输出清零寄存器(IOCLR,端口 0:IO0CLR – 0xE002 800C；FIOCLR,端口
0:FIO0CLR – 0x3FFF C01C）......................................................................................................66
8.5 GPIO 使用注意事项....................................................................................................................67
8.5.1 例 1：顺序访问 IOSET 和 IOCLR 寄存器对同一个 GPIO 管脚/位的影响....................67
8.5.2 例 2：使 GPIO 管脚上输出瞬时的 0 和 1.........................................................................67
8.5.3 写 IOSET/IOCLR .vs. IOPIN ..............................................................................................68
8.5.4 当使用遗留和增强型 GPIO 寄存器时输出信号频率需要考虑的事项...........................68
目录
第 9 章 通用异步接收器/发送器 0 (UART0) .....................................................................................70
9.1 特性.............................................................................................................................................70
9.2 管脚描述.....................................................................................................................................70
9.3 寄存器描述 .................................................................................................................................70
9.3.1 UART0 接收器缓存寄存器（U0RBR - 0xE000 C000，DLAB=0，只读） ....................71
9.3.2 UART0 发送器保持寄存器（U0THR - 0xE000C000，DLAB=0，只写） .....................71
9.3.3 UART0 除数锁存寄存器（U0DLL - 0xE000 C000 和 U0DLM - 0xE000 C004，当 DLAB=1
时）................................................................................................................................................72
9.3.4 UART0 小数分频寄存器（U0FDR – 0xE000 C028）.......................................................72
9.3.5 UART0 波特率计算.............................................................................................................73
9.3.6 UART0 中断使能寄存器（U0IER - 0xE000 C004，DLAB=0）......................................74
9.3.7 UART0 中断标识寄存器（U0IIR - 0xE000 C008，只读）..............................................75
9.3.8 UART0 FIFO 控制寄存器（U0FCR - 0xE000 C008）......................................................76
9.3.9 UART0 线控制寄存器（U0LCR - 0xE000 C00C）...........................................................77
9.3.10 UART0 线状态寄存器（U0LSR - 0xE000 C014，只读）..............................................78
9.3.11 UART0 高速缓存寄存器（U0SCR – 0xE000 C01C）.....................................................79
9.3.12 UART0 自动波特率控制寄存器(U0ACR – 0xE000 C020)..............................................79
9.3.13 自动波特率........................................................................................................................80
9.3.14 UART0 发送使能寄存器（U0TER – 0xE000 C030）.....................................................80
9.3.15 自动波特率模式................................................................................................................81
9.4 结构.............................................................................................................................................82
第 10 章 通用异步接收器/发送器 1（UART1）...............................................................................84
10.1 特性...........................................................................................................................................84
10.2 管脚描述 ...................................................................................................................................84
10.3 寄存器描述 ...............................................................................................................................85
10.3.1 UART1 接收器缓存寄存器（U1RBR - 0xE0010000，DLAB=0，只读）....................86
10.3.2 UART1 发送器保持寄存器（U1THR - 0xE0010000，DLAB=0，只写）....................86
10.3.3 UART1 除数锁存寄存器 0 和 1（U1DLL - 0xE001 0000 和 U1DLM - 0xE001 0004，当
DLAB=1 时）................................................................................................................................86
10.3.4 UART1 小数分频寄存器（U1FDR – 0xE001 0028） .....................................................87
10.3.5 UART1 波特率计算 ...........................................................................................................87
10.3.6 UART1 中断使能寄存器（U1IER - 0xE001 0004，DLAB=0） ....................................88
10.3.7 UART1 中断标识寄存器（U1IIR - 0xE001 0008，只读）.............................................89
10.3.8 UART1 FIFO 控制寄存器（U1FCR - 0xE001 0008）.....................................................91
10.3.9 UART1 线控制寄存器（U1LCR - 0xE001 000C） .........................................................92
10.3.10 UART1 Modem 控制寄存器（U1MCR - 0xE001 0010）..............................................93
10.3.11 UART1 线状态寄存器（U1LSR – 0xE001 0014，只读） ............................................95
10.3.12 UART1 Modem 状态寄存器（U1MSR - 0x0E001 0018） ............................................96
10.3.13 UART1 高速缓存寄存器（U1SCR - 0xE001 001C）....................................................96
10.3.14 UART1 自动波特率控制寄存器(U1ACR – 0xE001 0020) ............................................97
10.3.15 自动波特率......................................................................................................................97
10.3.16 自动波特率模式..............................................................................................................98
10.3.17 UART1 发送使能寄存器（U1TER – 0xE001 0030）....................................................99
剩余249页未读，继续阅读
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