MCP23008 Datasheet, PDF (28/40 Pages) Microchip Technology – 8-Bit I/O Expander with Serial Interface

MCP23008/MCP23S08
TABLE 2-3: SPI™ INTERFACE AC CHARACTERISTICS (CONTINUED)
SPI™ Interface AC Characteristics
Operating Conditions (unless otherwise indicated):
1.8V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +85°C (I-Temp)
4.5V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +125°C (E-Temp) (Note 1)
Param
No.
Characteristic
Sym Min Typ Max Units
Conditions
9 Clock Low Time
TLO
90
—
—
ns 1.8V – 5.5V (I-Temp)
45
—
—
ns 2.7V – 5.5V (I-Temp)
45
—
—
ns 4.5V – 5.5V (E-Temp)
10 Clock Delay Time
TCLD
50
—
—
ns
11 Clock Enable Time
TCLE
50
—
—
ns
12 Output Valid from Clock Low TV
—
—
90
ns 1.8V – 5.5V (I-Temp)
—
—
45
ns 2.7V – 5.5V (I-Temp)
—
—
45
ns 4.5V – 5.5V (E-Temp)
13 Output Hold Time
THO
0
—
—
ns
14 Output Disable Time
TDIS
—
— 100 ns
Note 1: This parameter is characterized, not 100% tested.
2: TV = 90 ns (max) when address pointer rolls over from address 0x0A to 0x00.
FIGURE 2-7:
GPIO AND INT TIMING
SCL/SCK
SDA/SI
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
inactive
53
52
DS21919B-page 28
© 2005 Microchip Technology Inc.