UPD78F9177 NEC, UPD78F9177 Datasheet - Page 33

• Manufacturer Part Number: UPD78F9177
• Description: 8-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

(2) Serial interface (T
SCK20 cycle time
SCK20 high-/low-
level width
SI20 setup time
(to SCK20 )
SI20 hold time
(from SCK20 )
SO20 output delay
time from SCK20
SCK20 cycle time
SCK20 high-/low-
level width
SI20 setup time
(to SCK20 )
SI20 hold time
(from SCK20 )
SO20 output delay
time from SCK20
SO20 setup time
(when using SS20,
to SS20 )
SO20 disable time
(when using SS20,
from SS20 )
Transfer rate
Note R and C are the load resistance and load capacitance of the SO20 output line.
Note R and C are the load resistance and load capacitance of the SO20 output line.
(a) 3-wire serial I/O mode (SCK20...Internal clock)
(b) 3-wire serial I/O mode (SCK20...External clock)
(c) UART mode (dedicated baud rate generator output)
Parameter
Parameter
Parameter
Symbol
t
Symbol
t
Symbol
KH1
KH2
t
t
t
t
t
t
t
t
t
t
KCY1
KSO1
KCY2
KSO2
KAS2
KDS2
SIK1
KSI1
SIK2
KSI2
A
, t
, t
= 40 to +85 C, V
KL1
KL2
V
V
V
V
R = 1 k ,
C = 100 pF
V
V
V
V
R = 1 k ,
C = 100 pF
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
= 2.7 to 5.5 V
Note
Note
DD
= 1.8 to 5.5 V)
Conditions
Conditions
Conditions
Data Sheet U14022EJ1V0DS00
V
V
DD
DD
= 2.7 to 5.5 V
= 2.7 to 5.5 V
t
t
KCY1
KCY1
3500
MIN.
MIN.
1600
PD78F9177, 78F9177Y
3200
900
400
100
150
400
600
MIN.
800
150
500
400
600
/2 50
/2 150
0
0
0
0
TYP.
TYP.
TYP.
78125
19531
MAX.
MAX.
MAX.
1000
1000
250
300
120
400
240
800
Unit
Unit
Unit
bps
bps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
33