MCP23009 Datasheet, PDF (36/50 Pages) Microchip Technology – 8-Bit I/O Expander with Open-Drain Outputs

MCP23009/MCP23S09
TABLE 2-4: I²C BUS DATA REQUIREMENTS (SLAVE MODE) (CONTINUED)
I²C™ AC Characteristics
Operating Conditions (unless otherwise indicated):
1.8V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +125°C
RPU (SCL, SDA) = 1 kΩ, CL (SCL, SDA) = 135 pF.
Param
No.
Characteristic
Sym
Min
Typ Max Units
Conditions
109 Output Valid From Clock:
TAA
100 kHz mode
—
— 3.45 µs 1.8V – 5.5V
400 kHz mode
—
— 0.9 µs 1.8V – 5.5V
3.4 MHz mode
—
— 0.18 µs 2.7V – 5.5V
110 Bus Free Time:
100 kHz mode
TBUF
(NOTE 3)
4.7
— — µs 1.8V – 5.5V
400 kHz mode
1.3
— — µs 1.8V – 5.5V
3.4 MHz mode
N/A
— N/A µs 2.7V – 5.5V
Bus Capacitive Loading:
CB
100 kHz and 400 kHz
(NOTE 2)
—
— 400 pF (Note 1)
3.4 MHz
—
— 100 pF (Note 1)
Input Filter Spike
TSP
Suppression: (SDA and SCL)
100 kHz and 400 kHz
—
— 50 ns (Note 1)
3.4 MHz
—
— 10
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).
ns (Note 1)
FIGURE 2-7:
SPI INPUT TIMING
CS
1
Mode 1,1
SCK _{Mode 0,0}
4
5
SI
MSB in
6
7
2
3
11
10
LSB in
SO
high impedance
DS22121B-page 36
© 2009 Microchip Technology Inc.