Datasheet

MCP23018/MCP23S18
DS22103A-page 40 © 2008 Microchip Technology Inc.
FIGURE 2-7: SPI INPUT TIMING
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: T
BUF
(NOTE 3)
100 kHz mode 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: C
B
(NOTE 2)
100 kHz and 400 kHz — — 400 pF (Note 1)
3.4 MHz — — 100 pF (Note 1)
Input Filter Spike
Suppression: (SDA and SCL)
T
SP
100 kHz and 400 kHz — — 50 ns (Note 1)
3.4 MHz — — 10 ns (Note 1)
TABLE 2-4: I
2
C BUS DATA REQUIREMENTS (SLAVE MODE) (CONTINUED)
I
2
C™ 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
Note 1: This parameter is characterized, not 100% tested.
2: C
B is specified from 10 to 400 (pF).
3: This parameter is not applicable in high-speed mode (3.4 MHz).
CS
SCK
SI
SO
1
5
4
7
6
3
10
2
LSB in
MSB in
high impedance
11
Mode 1,1
Mode 0,0