MCP23018/MCP23S18
2
TABLE 2-4:
I C BUS DATA REQUIREMENTS (SLAVE MODE) (CONTINUED)
Operating Conditions (unless otherwise indicated):
1.8V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +125°C
I2C™ AC Characteristics
RPU (SCL, SDA) = 1 kΩ, CL (SCL, SDA) = 135 pF.
Param
No.
Characteristic
Sym
Min
Typ
Max Units
Conditions
109 Output Valid From Clock:
100 kHz mode
TAA
—
—
—
—
—
—
3.45
0.9
µs 1.8V – 5.5V
µs 1.8V – 5.5V
400 kHz mode
3.4 MHz mode
0.18
µs 2.7V – 5.5V
110 Bus Free Time:
100 kHz mode
TBUF
(NOTE 3)
4.7
1.3
—
—
—
—
—
µs 1.8V – 5.5V
µs 1.8V – 5.5V
µs 2.7V – 5.5V
400 kHz mode
3.4 MHz mode
N/A
N/A
Bus Capacitive Loading:
100 kHz and 400 kHz
3.4 MHz
CB
(NOTE 2)
—
—
—
—
400
100
pF (Note 1)
pF (Note 1)
Input Filter Spike
TSP
Suppression: (SDA and SCL)
100 kHz and 400 kHz
3.4 MHz
—
—
—
—
50
10
ns (Note 1)
ns (Note 1)
Note 1: This parameter is characterized, not 100% tested.
2: CB is specified from 10 to 400 (pF).
3: This parameter is not applicable in high-speed mode (3.4 MHz).
FIGURE 2-7: SPI INPUT TIMING
3
CS
11
10
6
1
2
7
Mode 1,1
SCK
SI
Mode 0,0
4
5
MSB in
LSB in
high impedance
SO
DS22103A-page 40
© 2008 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
