MCP23S08-E/SO Microchip Technology, MCP23S08-E/SO Datasheet - Page 3

• Manufacturer Part Number: MCP23S08-E/SO
• Description: IC I/O EXPANDER SPI 8B 18SOIC
• Manufacturer: Microchip Technology

Specifications of MCP23S08-E/SO

• Package / Case: 18-SOIC (7.5mm Width)
• 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
• Includes: POR
• Logic Family: MCP23S08
• Propagation Delay Time: 50 ns
• Operating Supply Voltage: 1.8 V to 5.5 V
• Power Dissipation: 700 mW
• Operating Temperature Range: - 40 C to + 125 C
• Input Voltage: 1.8 V to 5.5 V
• Logic Type: I/O Expander
• Maximum Clock Frequency: 10 MHz
• Maximum Operating Frequency: 1.7 MHz
• Mounting Style: SMD/SMT
• Output Current: 25 mA
• Output Voltage: 1.8 V to 4.5 V
• Chip Configuration: 8 Bit
• Bus Frequency: 10MHz
• Ic Interface Type: Serial, SPI
• No. Of I/o's: 8
• Supply Voltage Range: 1.8V To 5.5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 18
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Delay Time: 50ns
• 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

1.0
The MCP23X08 device provides 8-bit, general
purpose, parallel I/O expansion for I
applications. The two devices differ in the number of
hardware address pins and the serial interface:
• MCP23008 – I
• MCP23S08 – SPI interface; two address pins
The MCP23X08 consists of multiple 8-bit configuration
registers for input, output and polarity selection. The
system master can enable the I/Os as either inputs or
outputs by writing the I/O configuration bits. The data
for each input or output is kept in the corresponding
Input or Output register. The polarity of the Input Port
register can be inverted with the Polarity Inversion
register. All registers can be read by the system master.
1.1
TABLE 1-1:
© 2005 Microchip Technology Inc.
SCL/SCK
SDA/SI
A2/SO
A1
A0
RESET
NC/CS
INT
V
GP0
GP1
GP2
GP3
GP4
GP5
GP6
GP7
V
N/C
SS
DD
Name
Pin
DEVICE OVERVIEW
Pin Descriptions
PDIP/S
OIC
10
12
13
14
15
16
17
18
11
1
2
3
4
5
6
7
8
9
2
C interface; three address pins
PINOUT DESCRIPTION
SSOP
10, 11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
Type
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
P
P
I
I
I
I
I
Serial clock input.
Serial data I/O (MCP23008)/Serial data input (MCP23S08).
Hardware address input (MCP23008)/Serial data output (MCP23S08).
A2 must be biased externally.
Hardware address input. Must be biased externally.
Hardware address input. Must be biased externally.
External reset input
No connect (MCP23008)/External chip select input (MCP23S08).
Interrupt output. Can be configured for active-high, active-low or open-drain.
Ground.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Bidirectional I/O pin. Can be enabled for interrupt-on-change and/or internal weak
pull-up resistor.
Power.
2
C bus or SPI
MCP23008/MCP23S08
The interrupt output can be configured to activate
under two conditions (mutually exclusive):
1.
2.
The Interrupt Capture register captures port values at
the time of the interrupt, thereby saving the condition
that caused the interrupt.
The Power-on Reset (POR) sets the registers to their
default values and initializes the device state machine.
The hardware address pins are used to determine the
device address.
When
corresponding input port register state. This is
used to indicate to the system master that an
input state has changed.
When an input state differs from a preconfigured
register value (DEFVAL register).
Function
any
input
state
differs
DS21919B-page 3
from
its