UPD78F9177 Datasheet, PDF (34/56 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

(d) UART mode (external clock input)
Parameter
ASCK20 cycle
time
Symbol
Conditions
tKCY3 VDD = 2.7 to 5.5 V
ASCK20 high-/low- tKH3, tKL3 VDD = 2.7 to 5.5 V
level width
Transfer rate
VDD = 2.7 to 5.5 V
ASCK20 rise time,
fall time
tR, tF
µPD78F9177, 78F9177Y
MIN.
TYP.
MAX.
Unit
900
ns
3500
ns
400
ns
1600
ns
39063
bps
9766
bps
1
µs
34
Data Sheet U14022EJ1V0DS00