MC68306FC16 Datasheet, PDF (180/191 Pages) Motorola, Inc – Integrated EC000 Processor

8.12 SERIAL MODULE AC ELECTRICAL CHARACTERISTICS—CLOCK
TIMING (See Figure 8-12.)
Characteristic
Counter/Timer Clock High or Low Time
Clock Rise Time
Clock Fall Time
Symbol Min Max Unit
t _CTC
25
—
ns
tr
—
20
ns
tf
—
20
ns
X1/CLK
IP2 FOR C/T CLK
t CLK
t CLK
t _CTC
t _CTC
t_r
t_f
Figure 8-12. Clock Timing
8.13 AC ELECTRICAL CHARACTERISTICS—PORT TIMING
(See Figure 8-13 and Note.)
Characteristic
Port Input Setup Time to LDS Asserted
Port Input Hold Time from LDS Negated
Port Output Valid from LDS Negated
NOTE: Test conditions for port outputs: CL = 50 pF, R _L = 27 kΩ to V _CC .
Symbol Min Max Unit
tPS
0
—
ns
tPH
0
—
ns
tPD
—
60
ns
LDS
IP0-IP2
OP0, OP1, OP3
t_PS
t_PH
t _PD
OLD DATA
Figure 8-13. Port Timing
NEW DATA
8-16
MC68306 USER'S MANUAL
MOTOROLA