Datasheet

© 2008 Microchip Technology Inc. DS22103A-page 39
MCP23018/MCP23S18
TABLE 2-4: I
2
C BUS DATA REQUIREMENTS (SLAVE MODE)
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
100 Clock High Time: THIGH
100 kHz mode 4.0 — — µs 1.8V – 5.5V
400 kHz mode 0.6 — — µs 1.8V – 5.5V
3.4 MHz mode 0.06 — — µs 2.7V – 5.5V
101 Clock Low Time: T
LOW
100 kHz mode 4.7 — — µs 1.8V – 5.5V
400 kHz mode 1.3 — — µs 1.8V – 5.5V
3.4 MHz mode 0.16 — — µs 2.7V – 5.5V
102 SDA and SCL Rise Time: T
R
(Note 1)
100 kHz mode — — 1000 ns 1.8V – 5.5V
400 kHz mode 20 + 0.1 C
B
(2)
— 300 ns 1.8V – 5.5V
3.4 MHz mode 10 — 80 ns 2.7V – 5.5V
103 SDA and SCL Fall Time: T
F
(Note 1)
100 kHz mode — — 300 ns 1.8V – 5.5V
400 kHz mode 20 + 0.1 C
B
(2)
— 300 ns 1.8V – 5.5V
3.4 MHz mode 10 — 80 ns 2.7V – 5.5V
90 START Condition Setup Time: T
SU:STA
100 kHz mode 4.7 — — µs 1.8V – 5.5V
400 kHz mode 0.6 — — µs 1.8V – 5.5V
3.4 MHz mode 0.16 — — µs 2.7V – 5.5V
91 START Condition Hold Time: T
HD:STA
100 kHz mode 4.0 — — µs 1.8V – 5.5V
400 kHz mode 0.6 — — µs 1.8V – 5.5V
3.4 MHz mode 0.16 — — µs 2.7V – 5.5V
106 Data Input Hold Time: T
HD:DAT
100 kHz mode 0 — 3.45 µs 1.8V – 5.5V
400 kHz mode 0 — 0.9 µs 1.8V – 5.5V
3.4 MHz mode 0 — 0.07 µs 2.7V – 5.5V
107 Data Input Setup Time: T
SU:DAT
100 kHz mode 250 — — ns 1.8V – 5.5V
400 kHz mode 100 — — ns 1.8V – 5.5V
3.4 MHz mode 0.01 — — µs 2.7V – 5.5V
92 STOP Condition Setup Time: T
SU:STO
100 kHz mode 4.0 — — µs 1.8V – 5.5V
400 kHz mode 0.6 — — µs 2.7V – 5.5V
3.4 MHz mode 0.16 — — µs 4.5V – 5.5V
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).