参数资料
型号: MIC74BQS
厂商: Micrel Inc
文件页数: 11/18页
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16QSOP
标准包装: 98
接口: I²C,SM 总线
输入/输出数: 8
中断输出:
电源电压: 2.7 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-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 管件
Micrel, Inc.
MIC74
October 2006
2
M9999-101006
Pin Configuration
1
A0
A1
A2
P0
P1
P2
P3
GND
16 VDD
DATA
CLK
/ALERT
P7 (/FS2)
P6 (/FS1)
P5 (/FS0)
P4 (/SHDN0)
15
14
13
12
11
10
9
2
3
4
5
6
7
8
16-Pin QSOP (QS)
Pin Description
Pin Number
Pin Name
Pin Function
1 – 3
A0 – A2
Address (Input): Slave address selection inputs; sets the three least significant bits of the
MIC74’s slave address.
4 – 7
P0 – P3
Parallel I/O (Input/Output): General-purpose I/O pin. Direction and output type are user
programmable.
8
GND
Ground
9 – 12
P4 – P7
(/SHDN, /FS0 – FS2)
Parallel I/O (Input/output): P4–P7 are general-purpose I/O pins. Direction and output type
are user programmable.
Shutdown (Output): When the FAN bit is set, pin 9 becomes SHDN.
Fan Speed (Output): When the FAN bit is set, pins 10 through 12 become /FS0–/FS2
respectively, controlled by the FAN_SPEED register.
13
/ALERT
Interrupt (Output): Active-low, open-drain output signals input-change-interrupts to the host
on this pin. Signal is cleared when the bus master (host) polls the ARA (alert response
address = 0001 100) or reads status.
14
CLK
Serial Bus Clock (Input): The host provides the serial bit clock in this input.
15
DATA
Serial Data (Input/Output): Serial data input and open-drain serial data output.
16
VDD
Power Supply (Input).
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