UPD75238GJ NEC [NEC], UPD75238GJ Datasheet - Page 174

• Manufacturer Part Number: UPD75238GJ
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC [NEC]

174
AC CHARACTERISTICS (T
(1) Basic operation
CPU clock cycle time
(minimum instruction
execution time)
TI0 input frequency
TI0 input high/low level
width
Interrupt input high/low
level width
RESET low level width
Notes 1. The cycle time of CPU clock ( ) de-
Parameter
2. This value becomes 2t
pends on the connected resonator
frequency, the system clock control
register (SCC), and the processor clock
control register (PCC). The figure on
the next page shows the cycle time
t
age V
operation.
cording to the setting of the interrupt
mode register (IM0).
CY
Note 1
characteristics for the supply volt-
DD
during main system clock
Symbol
a
t
t
t
t
INTH
INTL
t
t
TIH
TIL
f
RSL
CY
TI
= -40 to +85 C, V
,
,
Note 2
Min.
0.67
0.48
114
2.6
1.8
10
10
CY
0
0
or 128/f
Typ.
DD
122
X
ac-
= 2.7 to 6.0 V)
Max.
125
275
64
64
1
0.5
70
64
60
6
5
4
3
2
1
0
MHz
Unit
kHz
1
s
s
s
s
s
s
s
s
(When the main system clock is operating)
Operated by main
system clock
pulse
Operated by subsystem clock pulse
V
V
INT0
INT1, INT2, and INT4
2
DD
DD
Supply voltage V
= 4.5 to 6.0 V
= 4.5 to 6.0 V
3
t
Guaranteed operating
range
CY
vs V
Conditions
4
DD
DD
V
[V]
DD
5
= 4.5 to 6.0 V
6
PD75238