Motorola MCF5281 用户手册
MOTOROLA
Chapter 33. Electrical Characteristics
33-11
Processor Bus Output Timing Specifications
Figure 33-1. General Input Timing Requirements
33.8 Processor Bus Output Timing Specifications
Table 33-11. External Bus Output Timing Specifications
Name
Characteristic
Symbol
Min
Max
Unit
Control Outputs
B6a
CLKOUT high to chip selects valid
1
t
CHCV
—
0.5t
CYC
+10
ns
B6b
CLKOUT high to byte enables (BS[3:0]) valid
2
t
CHBV
—
0.5t
CYC
+10
ns
B6c
CLKOUT high to output enable (OE) valid
3
t
CHOV
—
0.5t
CYC
+10
ns
B7
CLKOUT high to control output (BS[3:0], OE) invalid
t
CHCOI
0.5t
CYC
+ 2
—
ns
B7a
CLKOUT high to chip selects invalid
t
CHCI
0.5t
CYC
+ 2
—
ns
Invalid
Invalid
CLKOUT(66.67 MHz)
T
SETUP
T
HOLD
Input Setup And Hold
1.5V
t
rise
= 1.5 ns
V
h
= V
IH
V
l
= V
IL
1.5V
1.5V Valid
t
fall
= 1.5 ns
V
h
= V
IH
V
l
= V
IL
Input Rise Time
Input Fall Time
* The timings are also valid for inputs sampled on the negative clock edge.
Inputs
CLKOUT
B4
B5