MCP23009-E/MG Microchip Technology, MCP23009-E/MG Datasheet - Page 12

• Manufacturer Part Number: MCP23009-E/MG
• Description: IC I/O EXPANDER I2C 8B 16QFN
• Manufacturer: Microchip Technology
• Type: I/O Expanderr

Specifications of MCP23009-E/MG

• Package / Case: 16-QFN
• Interface: I²C
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 3.4MHz
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Chip Configuration: 8bit
• Bus Frequency: 3.4MHz
• Interface Type: I2C, Serial, SPI
• No. Of I/o's: 9
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: QFN
• No. Of Pins: 16
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP23009/MCP23S09
FIGURE 1-5:
1.4.2
The MCP23009 is a slave I
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).
control byte format.
1.4.3
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.
shows the control byte format.
DS22121B-page 12
i2c_clk
i2c_addr[2:0]
V
adc_en
DD
ADDRESSING I
(MCP23009)
ADDRESSING SPI DEVICES
(MCP23S09)
t
ADEN
HARDWARE ADDRESS DECODE TIMING
2
C device that supports 7-
t
2
ADDRLAT
C DEVICES
Figure 1-6
shows the
Figure 1-7
FIGURE 1-6:
FIGURE 1-7:
Start
bit
CS
S
t
ADDIS
0
0
R/W = 0 = write
R/W = 1 = read
R/W = 0 = write
R/W = 1 = read
1
1
Slave Address
Slave Address
0
0
Control Byte
Control Byte
I
FORMAT
SPI CONTROL BYTE
FORMAT
0
2
0
© 2009 Microchip Technology Inc.
C™ CONTROL BYTE
A2 A1 A0 R/W ACK
0
R/W bit
ACK bit
R/W bit
0
0
R/W