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參數(shù)資料
| 型號： | PCA9501 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins |
| 中文描述： | 8位I2C和SMBus I / O口的中斷，2千比特的EEPROM和6個地址引腳 |
| 文件頁數(shù)： | 5/22頁 |
| 文件大小： | 146K |
| 代理商： | PCA9501 |
Philips Semiconductors
8-bit I
2
C and SMBus I/O port with interrupt,
2-kbit EEPROM and 6 address pins
Product data
PCA9501
2003 Sep 12
5
FUNCTIONAL DESCRIPTION
SW00788
WRITE PULSE
DATA FROM
SHIFT REGISTER
POWER-ON
RESET
READ PULSE
DATA TO
SHIFT REGISTER
V
DD
I/O0 TO I/O7
V
SS
100
μ
A
C
I
S
D
Q
FF
C
I
S
D
Q
FF
TO INTERRUPT LOGIC
Figure 4. Simplified schematic diagram of each I/O
DEVICE ADDRESSING
Following a START condition the bus master must output the address of the slave it is accessing. The address of the PCA9501 is shown in
Figure 5. Internal pullup resistors are incorporated on the hardware selectable address pins.
0
A5
A4
A3
A2
A1
A0
A5
1
A4
A3
A2
A1
A0
a.
b.
(a) I/O EXPANDER
(b) MEMORY
SW02006
SLAVE ADDRESS
SLAVE ADDRESS
HARDWARE
PROGRAMMABLE
FIXED
FIXED
R/W
R/W
HARDWARE
PROGRAMMABLE
Figure 5. PCA9501 slave addresses
The last bit of the address byte defines the operation to be performed. When set to logic 1 a read is selected while a logic 0 selects a write
operation.
CONTROL REGISTER
The PCA9501 contains a single 8-bit register called the Control Register, which can be written and read via the I
2
C bus. This register is sent
after a successful acknowledgment of the slave address.
It contains the I/O operation information.
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| PCA9501A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Smart, simple solutions for the 12 most common design concerns |
| PCA9501BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit I2C and SMBus I/O port with interrupt, 2-kbit EEPROM and 6 address pins |
| PCA9501BS,118 | 功能描述:接口-I/O擴展器 8BIT I2C FMQB GPIONT RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9501BS,118-CUT TAPE | 制造商:NXP 功能描述:8-bit 8 I/O I2C-bus Expander On Board 2 kb EEPROM Surface Mount - HVQFN-20 |
| PCA9501BS-T | 功能描述:接口-I/O擴展器 8BIT I2C FMQB GPIONT PU2K EPR RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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