参数资料
型号: MCP23009-E/MG
元件分类: 微控制器/微处理器
英文描述: 8 I/O, PIA-GENERAL PURPOSE, PQCC16
封装: 3 X 3 MM, 0.90 MM HEIGHT, PLASTIC, QFN-16
文件页数: 4/50页
文件大小: 607K
代理商: MCP23009-E/MG
MCP23009/MCP23S09
DS22121B-page 12
2009 Microchip Technology Inc.
FIGURE 1-5:
HARDWARE ADDRESS DECODE TIMING
1.4.2
ADDRESSING I2C DEVICES
(MCP23009)
The MCP23009 is a slave I2C device that supports 7-
bit slave addressing, with the read/write bit filling out
the control byte. The slave address contains four fixed
bits and three user-defined hardware address bits
(configured via ADDR pin). Figure 1-6 shows the
control byte format.
1.4.3
ADDRESSING SPI DEVICES
(MCP23S09)
The MCP23S09 is a slave SPI device. The slave
address contains seven fixed bits(no address bits) with
the read/write bit filling out the control byte. Figure 1-7
shows the control byte format.
FIGURE 1-6:
I2C CONTROL BYTE
FORMAT
FIGURE 1-7:
SPI CONTROL BYTE
FORMAT
VDD
adc_en
i2c_addr[2:0]
i2c_clk
tADEN
tADDRLAT
tADDIS
S
0
1
0
A2A1A0 R/W ACK
Start
bit
Slave Address
R/W bit
ACK bit
Control Byte
R/W = 0 = write
R/W = 1 = read
0
10000
0
R/W
Slave Address
R/W bit
Control Byte
R/W = 0 = write
R/W = 1 = read
CS
相关PDF资料
PDF描述
MCP23009-E/SS 8 I/O, PIA-GENERAL PURPOSE, PDSO20
MCP23S09T-E/SS 8 I/O, PIA-GENERAL PURPOSE, PDSO20
MCP23S09T-E/SO 8 I/O, PIA-GENERAL PURPOSE, PDSO18
MCP23S09-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
MCP23S09T-E/MG 8 I/O, PIA-GENERAL PURPOSE, PQCC16
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