Processor Bus Output Timing Specifications; General Input Timing Requirements; External Bus Output Timing Specifications - Motorola ColdFire MCF5281 User Manual

Timings listed in Table 33-10 are shown in Figure 33-1.
* The timings are also valid for inputs sampled on the negative clock edge.
CLKOUT(66.67 MHz)
Input Setup And Hold
CLKOUT
Inputs
Figure 33-1. General Input Timing Requirements

33.8 Processor Bus Output Timing Specifications

Table 33-10 lists processor bus output timings.
Table 33-11. External Bus Output Timing Specifications
Name
B6a CLKOUT high to chip selects valid
B6b CLKOUT high to byte enables (BS[3:0]) valid
B6c CLKOUT high to output enable (OE) valid
B7 CLKOUT high to control output (BS[3:0], OE) invalid
B7a CLKOUT high to chip selects invalid
MOTOROLA
Invalid
Input Rise Time
Input Fall Time
B4
Characteristic
Control Outputs
1
3
Chapter 33. Electrical Characteristics
Processor Bus Output Timing Specifications
1.5V
T
SETUP
T
HOLD
1.5V Valid 1.5V
t
rise
V = V
h IH
V = V
l IL
t
fall
V = V
h IH
V = V
l IL
Symbol
t
CHCV
2
t
CHBV
t
CHOV
t 0.5t
CHCOI
t 0.5t
CHCI
Invalid
= 1.5 ns
= 1.5 ns
B5
Min Max
— 0.5t +10
CYC
— 0.5t +10
CYC
— 0.5t +10
CYC
+ 2 —
CYC
+ 2 —
CYC
Unit
ns
ns
ns
ns
ns
33-11