HMS81032E/HMS81032TL
62
Nov. 2001 Ver 2.00
(4) SRAM BACK-UP after Low Voltage Detection.
Figure 16-6 Oscillator stabilizing diagram
Interrupt
disable
Stop release
disable
All I/O port
input Mode
Remout port
Low Level
OSC
STOP
All I/O port pull-up on
Mask Option
SRAM Data
retention until Fret
Table 16-1 The operation after Low Voltage detection
VDD
2V(Min.)
1.7V(typ.20
°
C
)
0.7V(Vret)
0V
3V
about hours depend on Vdd-GND Capacitor
SRAM Data Backup
User removes
batteries
User replaces
batteries
Time
Low Voltage detection point
Power on Reset
(SRAM retention)
Power on Reset
(SRAM unstable)
Summary of Contents for HMS81004E
Page 4: ...HMS81032E HMS81032TL NOV 2001 Ver 2 00...
Page 84: ...HMS81032E HMS81032TL 80 Nov 2001 Ver 2 00...
Page 85: ...APPENDIX...