Datasheet

MCP23018/MCP23S18
DS22103A-page 42 © 2008 Microchip Technology Inc.
TABLE 2-5: SPI INTERFACE AC CHARACTERISTICS
FIGURE 2-9: TYPICAL PERFORMANCE CURVE FOR SPI TV SPECIFICATION (PARAM #12)
SPI Interface AC Characteristics
Operating Conditions (unless otherwise indicated):
1.8V ≤ V
DD ≤ 5.5V at -40°C ≤ TA ≤ +125°C.
Param
No.
Characteristic Sym Min Typ Max Units Conditions
Clock Frequency F
CLK — — 10 MHz 1.8V – 5.5V
1CS
Setup Time TCSS 50 — — ns
2CS
Hold Time TCSH 50 — — ns 1.8V – 5.5V
3CS
Disable Time TCSD 50 — — ns 1.8V – 5.5V
4 Data Setup Time T
SU 10 — — ns 1.8V – 5.5V
5 Data Hold Time T
HD 10 — — ns 1.8V – 5.5V
6 CLK Rise Time T
R ——2µsNote 1
7 CLK Fall Time T
F ——2µsNote 1
8 Clock High Time T
HI 45 — — ns 1.8V – 5.5V
9 Clock Low Time T
LO 45 — — ns 1.8V – 5.5V
10 Clock Delay Time T
CLD 50 — — ns
11 Clock Enable Time T
CLE 50 — — ns
12 Output Valid from Clock
Low
T
V — — 45 ns 1.8V – 5.5V
13 Output Hold Time T
HO 0——ns
14 Output Disable Time T
DIS — — 100 ns
Note 1: This parameter is characterized, not 100% tested.
T
V
vs V
DD
0
5
10
15
20
25
30
35
40
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
DD
(V)
T
V
(ns)
T = -40°C
T = +25°C
T = +125°C
T = +85°C