NEC PD78F9488 User Manual
Page 354
CHAPTER 22 ELECTRICAL SPECIFICATIONS (
µ
PD789488, 78F9488, 789489, 78F9489)
354
User’s Manual U15331EJ4V1UD
(d) UART mode (external clock input)
Parameter Symbol
Conditions
MIN.
TYP.
MAX.
Unit
V
DD
= 2.7 to 5.5 V
800
ns
ASCK20 cycle time
t
KCY3
V
DD
= 1.8 to 5.5 V
3200
ns
V
DD
= 2.7 to 5.5 V
400
ns
ASCK20 high-/low-level
width
t
KH3
,
t
KL3
V
DD
= 1.8 to 5.5 V
1600
ns
V
DD
= 2.7 to 5.5 V
39063
bps
Transfer rate
V
DD
= 1.8 to 5.5 V
9766
bps
ASCK20 rise/fall time
t
R
,
t
F
1
µ
s