MCP23009-E/SS Microchip Technology, MCP23009-E/SS Datasheet - Page 28
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MCP23009-E/SS
Manufacturer Part Number
MCP23009-E/SS
Description
IC I/O EXPANDER I2C 8B 20SSOP
Manufacturer
Microchip Technology
Specifications of MCP23009-E/SS
Package / Case
20-SSOP
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
Logic Family
Interface ICs
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
3.4 MHz
Mounting Style
SMD/SMT
Output Current
200 mA
Output Voltage
0.6 V to 4.8 V
Chip Configuration
8 Bit
Bus Frequency
3.4MHz
Ic Interface Type
I2C
No. Of I/o's
8
Supply Voltage Range
1.8V To 5.5V
Digital Ic Case Style
SSOP
No. Of Pins
20
Interface Type
I2C
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
1.7.5
There are two possible configurations to cause
interrupts (configured via INTCON):
1.
2.
See
on interrupt operations.
DS22121B-page 28
Pins configured for interrupt-on-pin-change
will cause an interrupt to occur if a pin changes
to the opposite state. The default state is reset
after an interrupt occurs. For example, an
interrupt occurs by an input changing from 1 to
0. The new initial state for the pin is a logic 0.
Pins configured for interrupt-on-change from
register value will cause an interrupt to occur if
the corresponding input pin differs from the
register bit. The interrupt condition will remain as
long as the condition exists, regardless if the
INTAP or GPIO is read.
Figure 1-11
INTERRUPT CONDITIONS
and
Figure 1-12
for more information
FIGURE 1-11:
FIGURE 1-12:
GP:
GP2
INT
GPx
Port value
is captured
into INTCAP
INT
Port value
is captured
into INTCAP
7
X
6
X
ACTIVE
ACTIVE
5
X
INTERRUPT-ON-PIN-
CHANGE
Read GPIO
or INTCAP
INTERRUPT-ON-CHANGE
FROM REGISTER
DEFAULT
© 2009 Microchip Technology Inc.
DEFVAL
4
X
(INT clears only if interrupt
condition does not exist.)
3
X
Read GPIO
or INTCAP
ACTIVE
2
1
Port value
is captured
into INTCAP
ACTIVE
1
X
0
X