参数资料
| 型号： | PCA9500PW,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 22/26页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 8B 16TSSOP |
| 标准包装： | 2,500 |
| 接口： | I²C，SM 总线 |
| 输入/输出数： | 8 |
| 中断输出： | 无 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.5 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 包括： | EEPROM，POR |
| 其它名称： | 935271534118 PCA9500PW-T PCA9500PW-T-ND |
PCA9500_4
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 04 — 15 April 2009
5 of 26
NXP Semiconductors
PCA9500
8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM
7.
Functional description
Refer also to Figure 1 “Block diagram of PCA9500”.
7.1 Device addressing
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9500 is shown in Figure 6. Internal pull-up resistors
are incorporated on the hardware selectable address pins.
The last bit of the address byte denes the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
7.2 Control register
The PCA9500 contains a single 8-bit register called the Control register, which can be
written and read via the I2C-bus. This register is sent after a successful acknowledgment
of the slave address. It contains the I/O operation information.
Fig 5.
Simplied schematic diagram of each I/O
002aae588
write pulse
read pulse
D
CI
S
FF
Q
power-on reset
data from shift register
100
A
VDD
IO0 to IO7
VSS
D
CI
S
FF
Q
data to shift register
to interrupt logic
a. I/O expander
b. Memory
Fig 6.
PCA9500 slave addresses
002aae589
0
1
0
A2
A1
A0 R/W
fixed
slave address
hardware
programmable
002aae590
1
0
1
0
A2
A1
A0 R/W
fixed
slave address
hardware
programmable
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| PCA9501 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins |
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| PCA9501BS,118 | 功能描述:接口-I/O扩展器 8BIT I2C FMQB GPIONT RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
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