UPD75518 NEC, UPD75518 Datasheet - Page 166

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

166
AC CHARACTERISTICS (T
(1) Basic operation
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 (minimum instruction
Note 1
Parameter
2. This value becomes 2t
execution time) depends on the con-
nected resonator frequency, the sys-
tem clock control register (SCC), and
the processor clock control register
(PCC). The figure on the right side
shows the cycle time t
tics for the supply voltage V
main system clock operation.
cording to the setting of the interrupt
mode register (IM0).
Symbol
t
f
t
t
t
t
t
CY
TI
TIH
TIL
INTH
INTL
RSL
a
,
,
= -40 to +85 C, V
Note 2
Min.
0.67
0.48
114
2.6
1.8
10
10
10
CY
CY
0
0
characteris-
or 128/f
DD
during
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
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
KR0 to KR7
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
PD75518(A)
6