UPD75518 NEC, UPD75518 Datasheet - Page 173

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

DATA HOLD CHARACTERISTICS BY LOW SUPPLY VOLTAGE IN DATA MEMORY STOP MODE
(T
Data Hold Timing (STOP Mode Release by RESET)
Data Hold Timing (Standby Release Signal: STOP Mode Release by Interrupt Signal)
Data hold supply voltage
Data hold supply current
Release signal setting time
Oscillation stability wait
time
a
RESET
Notes 1. Excluding the current which flows through the built-in pull-up resistors
= -40 to +85 C)
Note 2
Standby release signal
(interrupt request)
V
V
DD
DD
Parameter
2. CPU operation stop time for preventing unstable operation at the beginning of oscillation
3. This value depends on the settings of the basic interval timer mode register (BTM) shown below.
STOP instruction execution
STOP instruction execution
BTM3
—
—
—
—
Note 1
BTM2
0
0
1
1
Symbol
V
I
t
t
DDDR
WAIT
SREL
DDDR
BTM1
0
1
0
1
Min.
2.0
0
BTM0
STOP mode
STOP mode
0
1
1
1
V
V
DDDR
DDDR
Note 3
2
Typ.
Data hold mode
Data hold mode
0.1
17
/f
X
2
2
2
2
20
17
15
13
/f
/f
/f
/f
X
X
X
X
Max.
(approx. 175 ms)
(approx. 31.3 ms)
(approx. 7.82 ms)
(approx. 1.95 ms)
f
X
6.0
10
= 4.19 MHz
Unit
ms
ms
Internal reset operation
V
A
s
Wait time
t
t
V
Release by RESET
Release by interrupt request
SREL
SREL
DDDR
2
2
2
2
20
17
15
13
/f
/f
/f
/f
X
X
X
X
= 2.0 V
HALT mode
HALT mode
(approx. 175 ms)
(approx. 21.8 ms)
(approx. 5.46 ms)
(approx. 1.37 ms)
f
X
t
t
WAIT
WAIT
= 6.0 MHz
Conditions
PD75518(A)
Operating
mode
Operating
mode
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