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