MCP23018 Datasheet, PDF (36/56 Pages) Microchip Technology – 16-Bit I/O Expander with Open-Drain Outputs

MCP23018/MCP23S18
TABLE 2-2: GP AND INT PINS
AC Characteristics Standard Operating Conditions (unless otherwise specified)
1.8V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +125°C.
Parameter
No.
Sym
Characteristic
Min Typ^{( 2)} Max Units
Conditions
50
51
52
53
54
Note 1:
2:
t_GPOV Serial data to output valid
— — 500 ns
t_INTD Interrupt pin disable time
— — 600 ns
t_GPIV GP input change to register valid — 450 — ns Note 1
t_GPINT IOC event to INT active
— — 600 ns
t_GLITCH Glitch filter on GP pins
— — 50 ns Note 1
This parameter is characterized, not 100% tested.
Data in the Typical (“Typ”) column is at 5V, 25°C, unless otherwise stated.
FIGURE 2-3:
GPIO AND INT TIMING
SCL
SDA
In
GPn
Output
Pin
INT
Pin
GPn
Input
Pin
Register
Loaded
D1
D0
LSb of data byte zero
during a write or read
command, depending
on parameter
50
INT pin active
51
INT pin
inactive
53
52
DS22103A-page 36
© 2008 Microchip Technology Inc.