UPD75218 NEC, UPD75218 Datasheet - Page 52

• Manufacturer Part Number: UPD75218
• Description: 4-BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

52
Standby release signal
(Interrupt request)
Data Retention Timing (STOP Mode Release by RESET)
Data Retention Timing (Standby Release Signal: STOP Mode Release by Interrupt Signal)
Notes 1.
DATA RETENTION CHARACTERISTICS FOR DATA MEMORY AT LOW SUPPLY VOLTAGE IN STOP MODE
(Ta = –40 to +85 C)
Data retention supply voltage
Data retention supply current Note 1
Release signal set time
Oscillation settling time
Parameter
2.
3.
Current to the on-chip pull-down resistor (mask option) is not included.
Oscillation settling time is time to stop CPU operation to prevent unstable operation upon oscillation
start.
According to the setting of the basic interval timer mode register (BTM) (See below.)
RESET
V
BTM3
V
DD
DD
—
—
—
—
STOP instruction execution
STOP instruction execution
Note 2
BTM2
0
0
1
1
Symbol
V
I
t
t
DDDR
SREL
WAIT
DDDR
BTM1
0
1
0
1
V
Release by RESET
Release by interrupt request
DDDR
BTM0
= 2.0 V
0
1
1
1
V
Data retention mode
V
Data retention mode
DDDR
DDDR
Settling time (values at f
2
2
2
2
STOP mode
20
17
15
13
STOP mode
/f
/f
/f
/f
Conditions
XX
XX
XX
XX
(approx. 175 ms)
(approx. 21.8 ms)
(approx. 5.46 ms)
(approx. 1.37 ms)
Internal reset operation
XX
= 6.0 MHz in parentheses)
t
t
SREL
SREL
Min.
2.0
HALT mode
HALT mode
0
t
t
WAIT
WAIT
Note 3
2
Typ.
0.1
17
/f
X
Normal operation
mode
Normal operation
mode
Max.
6.0
10
PD75218
Unit
ms
ms
V
A
s