没有合适的资源?快使用搜索试试~ 我知道了~
TI-PCA9539.pdf
需积分: 0 0 下载量 65 浏览量
2023-02-01
22:41:48
上传
评论 4
收藏 3.44MB PDF 举报
温馨提示
试读
47页
I/O扩展器
资源推荐
资源详情
资源评论
具有中断输出、复位和配置寄存器的 PCA9539 远程 16 位 I2C 和 SMBus 低功耗
I/O 扩展器
1 特性
• 1μA 低待机电流消耗(最大值)
• I
2
C 至并行端口扩展器
• 开漏电路低电平有效中断输出
• 低电平有效复位输入
• 可耐受 5V 电压的 I/O 端口
• 兼容大多数微控制器
• 400kHz 快速 I
2
C 总线
• 极性反转寄存器
• 通过两个硬件地址引脚寻址,以便使用多达 4 个器
件
• 具有高电流驱动能力的锁存输出,用于直接驱动
LED
• 闩锁性能超过 100mA,符合 JESD 78 II 类规范的
要求
• ESD 保护性能超过 JESD 22 规范要求
– 2000V 人体放电模型 (A114-A)
– 1000V 带电器件模型 (C101)
2 说明
这个用于两线双向总线 (I2C) 的 16 位扩展器设计用于
在 2.3V 至 5.5V VCC 之间运行。通过 I
2
C 接口 [串行
时钟 (SCL),串行数据 (SDA)],它为大多数微控制器
系列产品提供通用远程 I/O 扩展。
PCA9539 由两个 8 位配置(输入或输出可选)、输入
端口、输出端口和极性反转(高电平有效或低电平有效
运行)寄存器组成。在加电时,I/O 被配置为输入。系
统主控制器可以通过写入 I/O 配置位将 I/O 启用为输入
或输出。每个输入或输出的数据均保存在相应的输入或
输出寄存器中。输入端口寄存器的极性可借助极性反转
寄存器进行转换。所有寄存器都可由系统主控器读取。
器件信息
器件型号
封装
(1)
封装尺寸(标称值)
PCA9539
SSOP (24) 8.20mm × 5.30mm
TVSOP (24) 5.00mm × 4.40mm
SOIC (24) 15.40mm × 7.50mm
TSSOP (24) 7.80mm × 4.40mm
VQFN (24) 4.00mm × 4.00mm
(1) 如需了解所有可用封装,请参阅数据表末尾的可订购产品附
录。
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
INT
A1
RESET
P00
P01
P02
P03
P04
P05
P06
P07
GND
V
CC
SDA
SCL
A0
P17
P16
P15
P14
P13
P12
P11
P10
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
24 23 22 21 20
7 8 9 10 11
1
2
3
4
5
6
18
17
16
15
14
13
RGE PACKAGE
(TOP VIEW)
A1
INT
P10
P11 SDA
P06
P07
GND
V
CC
19
SCL
12
P12
P00
P01
P02
P03
P04
P05
A0
P17
P16
P15
P14
P13
RESET
PCA9539
ZHCSNJ1H – AUGUST 2005 – REVISED MARCH 2021
本文档旨在为方便起见,提供有关 TI 产品中文版本的信息,以确认产品的概要。有关适用的官方英文版本的最新信息,请访问
www.ti.com,其内容始终优先。TI 不保证翻译的准确性和有效性。在实际设计之前,请务必参考最新版本的英文版本。
English Data Sheet: SCPS130
Table of Contents
1 特性................................................................................... 1
2 说明................................................................................... 1
3 Revision History.............................................................. 2
4 Description (Continued)..................................................3
5 Pin Configuration and Functions...................................4
6 Specifications.................................................................. 5
6.1 Absolute Maximum Ratings........................................ 5
6.2 ESD Ratings............................................................... 5
6.3 Recommended Operating Conditions.........................5
6.4 Thermal Resistance Characteristics........................... 6
6.5 Electrical Characteristics.............................................6
6.6 I
2
C Interface Timing Requirements.............................7
6.7 RESET Timing Requirements.....................................7
6.8 Switching Characteristics............................................7
6.9 Typical Characteristics................................................8
7 Parameter Measurement Information.......................... 11
8 Detailed Description......................................................15
8.1 Functional Block Diagram......................................... 15
8.2 Device Functional Modes..........................................17
8.3 Programming............................................................ 18
9 Application Information Disclaimer............................. 25
9.1 Application Information............................................. 25
9.2 Typical Application.................................................... 25
10 Power Supply Recommendations..............................27
10.1 Power-On Reset Requirements.............................. 27
11 Device and Documentation Support..........................29
11.1 Trademarks............................................................. 29
11.2 Electrostatic Discharge Caution.............................. 29
11.3 Glossary.................................................................. 29
12 Mechanical, Packaging, and Orderable
Information.................................................................... 29
3 Revision History
Changes from Revision G (May 2014) to Revision H (March 2021) Page
• Moved the "Storage temperature range" to the Absolute Maximum Ratings .................................................... 5
• Moved the "Package thermal impedance" to the Thermal Resistance Characteristic .......................................5
• Changed the V
CC
Supply voltage Max value From: 5.5 V To: V
CC
in the Recommended Operating Conditions
............................................................................................................................................................................5
• Added the Thermal Resistance Characteristics .................................................................................................6
• Changed the V
PORR
Typ value From: 1.5 V To 1.2 V in the Electrical Characteristics ...................................... 6
• Added V
PORF
to the Electrical Characteristics ................................................................................................... 6
• Changed the I
CC
Standby mode values in the Electrical Characteristics ...........................................................6
• Changed the C
i
SCL Max value From: 7 pF To: 8 pF in the Electrical Characteristics ......................................6
• Changed the C
io
SDA Max value From: 7 pF To: 9.5 pF in the Electrical Characteristics .................................6
• Updated the Typical Characteristics graphs....................................................................................................... 8
• Changed the Power Supply Recommendations .............................................................................................. 27
Changes from Revision F (January 2011) to Revision G (May 2014) Page
• Added RESET Errata section........................................................................................................................... 17
• Added Interrupt Errata section..........................................................................................................................18
PCA9539
ZHCSNJ1H – AUGUST 2005 – REVISED MARCH 2021
www.ti.com.cn
2 Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: PCA9539
4 Description (Continued)
The system master can reset the PCA9539 in the event of a time-out or other improper operation by asserting a
low in the RESET input. The power-on reset puts the registers in their default state and initializes the I
2
C/SMBus
state machine. Asserting RESET causes the same reset/initialization to occur without de-powering the part.
The PCA9539 open-drain interrupt ( INT) output is activated when any input state differs from its corresponding
Input Port register state and is used to indicate to the system master that an input state has changed.
INT can be connected to the interrupt input of a microcontroller. By sending an interrupt signal on this line, the
remote I/O can inform the microcontroller if there is incoming data on its ports without having to communicate via
the I
2
C bus. Thus, the PCA9539 can remain a simple slave device.
The device outputs (latched) have high-current drive capability for directly driving LEDs. The device has low
current consumption.
The PCA9539 is identical to the PCA9555, except for the removal of the internal I/O pullup resistor, which greatly
reduces power consumption when the I/Os are held low, replacement of A2 with RESET, and a different address
range.
Two hardware pins (A0 and A1) are used to program and vary the fixed I
2
C address and allow up to four devices
to share the same I
2
C bus or SMBus.
www.ti.com.cn
PCA9539
ZHCSNJ1H – AUGUST 2005 – REVISED MARCH 2021
Copyright © 2021 Texas Instruments Incorporated
Submit Document Feedback
3
Product Folder Links: PCA9539
5 Pin Configuration and Functions
DB, DBQ, DGV, DW, OR PW PACKAGE
(TOP VIEW)
INT
A1
RESET
P00
P01
P02
P03
P04
P05
P06
P07
GND
V
CC
SDA
SCL
A0
P17
P16
P15
P14
P13
P12
P11
P10
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
24 23 22 21 20
7 8 9 10 11
1
2
3
4
5
6
18
17
16
15
14
13
RGE PACKAGE
(TOP VIEW)
A1
INT
P10
P11 SDA
P06
P07
GND
V
CC
19
SCL
12
P12
P00
P01
P02
P03
P04
P05
A0
P17
P16
P15
P14
P13
RESET
表 5-1. Pin Functions
PIN
DESCRIPTION
NAME
NO.
SOIC (DW),
SSOP (DB),
QSOP (DBQ),
TSSOP (PW), AND
TVSOP (DGV)
QFN (RGE)
INT 1 22 Interrupt output. Connect to V
CC
through a pullup resistor.
A1 2 23 Address input. Connect directly to V
CC
or ground.
RESET 3 24
Active-low reset input. Connect to V
CC
through a pullup resistor if no active
connection is used.
P00 4 1 P-port input/output. Push-pull design structure.
P01 5 2 P-port input/output. Push-pull design structure.
P02 6 3 P-port input/output. Push-pull design structure.
P03 7 4 P-port input/output. Push-pull design structure.
P04 8 5 P-port input/output. Push-pull design structure.
P05 9 6 P-port input/output. Push-pull design structure.
P06 10 7 P-port input/output. Push-pull design structure.
P07 11 8 P-port input/output. Push-pull design structure.
GND 12 9 Ground
P10 13 10 P-port input/output. Push-pull design structure.
P11 14 11 P-port input/output. Push-pull design structure.
P12 15 12 P-port input/output. Push-pull design structure.
P13 16 13 P-port input/output. Push-pull design structure.
P14 17 14 P-port input/output. Push-pull design structure.
P15 18 15 P-port input/output. Push-pull design structure.
P16 19 16 P-port input/output. Push-pull design structure.
P17 20 17 P-port input/output. Push-pull design structure.
A0 21 18 Address input. Connect directly to V
CC
or ground.
SCL 22 19 Serial clock bus. Connect to V
CC
through a pullup resistor.
SDA 23 20 Serial data bus. Connect to V
CC
through a pullup resistor.
V
CC
24 21 Supply voltage
PCA9539
ZHCSNJ1H – AUGUST 2005 – REVISED MARCH 2021
www.ti.com.cn
4 Submit Document Feedback
Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: PCA9539
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1)
MIN MAX UNIT
V
CC
Supply voltage range
–0.5
6 V
V
I
Input voltage range
(2)
–0.5
6 V
V
O
Output voltage range
(2)
–0.5
6 V
I
IK
Input clamp current V
I
< 0
–20
mA
I
OK
Output clamp current V
O
< 0
–20
mA
I
IOK
Input/output clamp current V
O
< 0 or V
O
> V
CC
±20 mA
I
OL
Continuous output low current V
O
= 0 to V
CC
50 mA
I
OH
Continuous output high current V
O
= 0 to V
CC
–50
mA
I
CC
Continuous current through GND
–250
mA
Continuous current through V
CC
160
T
stg
Storage temperature range -65 150 °C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
6.2 ESD Ratings
MIN MAX UNIT
V
(ESD)
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all
pins
(1)
0 2000
V
Charged device model (CDM), per JEDEC specification
JESD22-C101, all pins
(2)
0 1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
6.3 Recommended Operating Conditions
MIN MAX UNIT
V
CC
Supply voltage 2.3 V
CC
V
V
IH
High-level input voltage
SCL, SDA 0.7 × V
CC
V
CC
V
A0, A1, RESET, P07–P00, P17–P10
0.7 × V
CC
5.5
V
IL
Low-level input voltage
SCL, SDA
–0.5
0.3 × V
CC
V
A0, A1, RESET, P07–P00, P17–P10 –0.5
0.3 × V
CC
I
OH
High-level output current
P07–P00, P17–P10 –10
mA
I
OL
Low-level output current
P07–P00, P17–P00
25 mA
T
A
Operating free-air temperature
–40
85 °C
www.ti.com.cn
PCA9539
ZHCSNJ1H – AUGUST 2005 – REVISED MARCH 2021
Copyright © 2021 Texas Instruments Incorporated
Submit Document Feedback
5
Product Folder Links: PCA9539
剩余46页未读,继续阅读
资源评论
不觉明了
- 粉丝: 3163
- 资源: 5419
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功