MCP23S08-E/ML Microchip Technology, MCP23S08-E/ML Datasheet - Page 8
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MCP23S08-E/ML
Manufacturer Part Number
MCP23S08-E/ML
Description
IC, I/O EXPANDER, 8BIT, 10MHZ, QFN-20
Manufacturer
Microchip Technology
Datasheet
1.MCP23008-EP.pdf
(44 pages)
Specifications of MCP23S08-E/ML
Chip Configuration
8 Bit
Bus Frequency
10MHz
Ic Interface Type
SPI
No. Of I/o's
8
Supply Voltage Range
1.8V To 5.5V
Digital Ic Case Style
QFN
No. Of Pins
20
Interface
SPI
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
10MHz
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Includes
POR
Interface Type
SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
GPIODM-KPLCD - BOARD DEMO LCD GPIO EXP KEYPAD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP23S08-E/ML
Manufacturer:
Microchip
Quantity:
1 800
Company:
Part Number:
MCP23S08-E/ML
Manufacturer:
MICROCHIP
Quantity:
2 100
Part Number:
MCP23S08-E/ML
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
MCP23008/MCP23S08
1.4.1
The MCP23008 is a slave I
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 (pins A2,
A1 and A0). Figure 1-2 shows the control byte format.
1.4.2
The MCP23S08 is a slave SPI device. The slave
address contains five fixed bits and two user-defined
hardware address bits (pins A1 and A0), with the read/
write bit filling out the control byte. Figure 1-3 shows
the control byte format.
FIGURE 1-4:
FIGURE 1-5:
DS21919E-page 8
CS
S
0
0
ADDRESSING I
(MCP23008)
ADDRESSING SPI DEVICES
(MCP23S08)
1
1
Device Opcode
Device Opcode
0
0
I
SPI ADDRESSING REGISTERS
2
C™ ADDRESSING REGISTERS
0
0
2
C device that supports 7-bit
A2 A1 A0
2
0
C DEVICES
The ACKs are provided by the MCP23008.
A1 A0 R/W
R/W = 0
0
ACK
A7
A7
FIGURE 1-2:
FIGURE 1-3:
A6
A6
Start
bit
CS
S
A5
A5
0
0
R/W = 0 = write
R/W = 1 = read
Register Address
Register Address
R/W = 0 = write
R/W = 1 = read
1
A4
1
A4
Slave Address
Slave Address
0
0
Control Byte
Control Byte
A3
A3
I
FORMAT
SPI CONTROL BYTE
FORMAT
0
2
0
© 2007 Microchip Technology Inc.
C™ CONTROL BYTE
A2
A2
A2 A1 A0 R/W ACK
0
R/W bit
ACK bit
R/W bit
A1 A0 R/W
A1
A1
A0
A0
ACK