Datasheet

MCP23008/MCP23S08
DS21919E-page 28 © 2007 Microchip Technology Inc.
FIGURE 2-5: SPI INPUT TIMING
109 Output Valid From Clock: TAA
100 kHz mode — — 3.45 µs 1.8V – 5.5V (I-Temp)
400 kHz mode — — 0.9 µs 2.7V – 5.5V (I-Temp)
1.7 MHz mode — — 0.18 µs 4.5V – 5.5V (E-Temp)
110 Bus Free Time: T
BUF
100 kHz mode 4.7 — — µs 1.8V – 5.5V (I-Temp)
400 kHz mode 1.3 — — µs 2.7V – 5.5V (I-Temp)
1.7 MHz mode N/A — N/A µs 4.5V – 5.5V (E-Temp)
Bus Capacitive Loading: C
B
100 kHz and 400 kHz — — 400 pF (Note 1)
1.7 MHz — — 100 pF (Note 1)
Input Filter Spike
Suppression: (SDA and SCL)
T
SP
100 kHz and 400 kHz — — 50 ns
1.7 MHz — — 10 ns Spike suppression off
TABLE 2-2: I
2
C™ BUS DATA REQUIREMENTS (CONTINUED)
I
2
C™ AC Characteristics
Operating Conditions (unless otherwise indicated):
1.8V ≤ V
DD ≤ 5.5V at -40°C ≤ TA ≤ +85°C (I-Temp)
4.5V ≤ V
DD ≤ 5.5V at -40°C ≤ TA ≤ +125°C (E-Temp) (Note 1)
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 to be from 10 to 400 pF.
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