參數(shù)資料
型號: PCA9535EDWR2G
廠商: ON Semiconductor
文件頁數(shù): 20/20頁
文件大?。?/td> 0K
描述: 16-BIT I/O EXPANDER
標(biāo)準(zhǔn)包裝: 1,000
接口: I²C 總線,SM 總線
輸入/輸出數(shù): 16
中斷輸出:
頻率 - 時鐘: 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-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC
包裝: 帶卷 (TR)
包括: *
PCA9535E, PCA9535EC
http://onsemi.com
9
REGISTERS
Command Byte
During a write transmission, the address byte is followed
by the command byte. The command byte determines which
of the following registers will be written or read.
Table 7. COMMAND BYTE
COMMAND
REGISTER
0
Input Port 0
1
Input Port 1
2
Output Port 0
3
Output Port 1
4
Polarity Inversion Port 0
5
Polarity Inversion Port 1
6
Configuration Port 0
7
Configuration Port 1
Registers 0 and 1: Input Port Registers
These registers are inputonly. They reflect the incoming
logic levels of the pins, regardless of whether the pin is
defined as an input or an output by Registers 6 or 7. Writes
to these registers have no effect.
The externallyapplied logic level determines the default
value ‘X’.
Table 8. INPUT PORT 0 REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
I0.7
I0.6
I0.5
I0.4
I0.3
I0.2
I0.1
I0.0
Default
X
Table 9. INPUT PORT 1 REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
I1.7
I1.6
I1.5
I1.4
I1.3
I1.2
I1.1
I1.0
Default
X
Registers 2 and 3: Output Port Registers
These registers are outputonly. They reflect the outgoing
logic levels of the pins defined as outputs by Registers 6 and
7. Bit values in these registers have no effect on pins defined
as inputs. In turn, reads from these registers reflect the values
that are in the flipflops controlling the output selection, not
the actual pin values.
Table 10. OUTPUT PORT 0 REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
O0.7
O0.6
O0.5
O0.4
O0.3
O0.2
O0.1
O0.0
Default
1
Table 11. OUTPUT PORT 1 REGISTER
Bit
7
6
5
4
3
2
1
0
Symbol
O1.7
O1.6
O1.5
O1.4
O1.3
O1.2
O1.1
O1.0
Default
1
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