參數(shù)資料
型號(hào): PCA9535ECDTR2G
廠商: ON Semiconductor
文件頁數(shù): 18/20頁
文件大?。?/td> 0K
描述: 16-BIT I/O EXPANDER 24TSSOP
標(biāo)準(zhǔn)包裝: 2,500
接口: I²C 總線,SM 總線
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時(shí)鐘: 100kHz
電源電壓: 1.65 V ~ 5.5 V
工作溫度: -55°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 24-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 24-TSSOP
包裝: 帶卷 (TR)
包括: *
PCA9535E, PCA9535EC
http://onsemi.com
7
Device Address
Before the bus master can access a slave device, it must
send the address of the slave it is accessing and the operation
it wants to perform (read or write) following a START
condition. The slave address of the PCA9535E and
PCA9535EC is shown in Figure 5. Address pins AD2, AD1,
and AD0 choose 1 of 64 slave addresses. To conserve power,
no internal pullup resistors are provided on AD2, AD1, and
AD0.
A logic 1 on the last bit of the first byte selects a read
operation while a logic 0 selects a write operation.
Figure 5. PCA9535E and PCA9535EC Device Address
R/W
A6
A5
A4
A3
A2
A1
A0
programmable
slave address
Table 6. PCA9535E AND PCA9535EC ADDRESS MAP
Address Input
Slave Address
AD2
AD1
AD0
A6
A5
A4
A3
A2
A1
A0
HEX
GND
SCL
GND
0
1
0
20h
GND
SCL
VDD
0
1
0
1
22h
GND
SDA
GND
0
1
0
1
0
24h
GND
SDA
VDD
0
1
0
1
26h
VDD
SCL
GND
0
1
0
1
0
28h
VDD
SCL
VDD
0
1
0
1
0
1
2Ah
VDD
SDA
GND
0
1
0
1
0
2Ch
VDD
SDA
VDD
0
1
0
1
2Eh
GND
SCL
0
1
0
30h
GND
SCL
SDA
0
1
0
1
32h
GND
SDA
SCL
0
1
0
1
0
34h
GND
SDA
0
1
0
1
36h
VDD
SCL
0
1
0
38h
VDD
SCL
SDA
0
1
0
1
3Ah
VDD
SDA
SCL
0
1
0
3Ch
VDD
SDA
0
1
3Eh
GND
0
1
0
40h
GND
VDD
0
1
0
1
42h
GND
VDD
GND
0
1
0
1
0
44h
GND
VDD
0
1
0
1
46h
VDD
GND
0
1
0
1
0
48h
VDD
GND
VDD
0
1
0
1
0
1
4Ah
VDD
GND
0
1
0
1
0
4Ch
VDD
0
1
0
1
4Eh
GND
SCL
0
1
0
1
0
50h
GND
SDA
0
1
0
1
0
1
52h
GND
VDD
SCL
0
1
0
1
0
1
0
54h
GND
VDD
SDA
0
1
0
1
0
1
56h
VDD
GND
SCL
0
1
0
1
0
58h
VDD
GND
SDA
0
1
0
1
0
1
5Ah
VDD
SCL
0
1
0
1
0
5Ch
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