Operations Of Low-Voltage Detection Reset Circuit - Fujitsu F2MC-8FX Hardware Manual

25.4

Operations of Low-voltage Detection Reset Circuit

The low-voltage detection reset circuit generates a reset signal if the power supply
voltage falls below the detection voltage.
Operations of Low-voltage Detection Reset Circuit
The low-voltage detection reset circuit generates a reset signal if the power supply voltage falls below the
detection voltage. If the voltage is subsequently detected to have recovered, the circuit outputs a reset
signal for the duration of the oscillation stabilization wait time to cancel the reset.
For details on the electrical characteristics, see the data sheet.
Figure 25.4-1 Operations of Low-voltage Detection Reset Circuit
Vcc
Detection/cancel-
lation voltage
Lower operating
voltage limit
RST signal
Operations in Standby Mode
The low-voltage detection reset circuit remains operating even in standby modes (stop, sleep, subclock, and
watch modes).
CHAPTER 25 LOW-VOLTAGE DETECTION RESET CIRCUIT
B
A A
A: Delay
B: Oscillation stabilization wait time
B B
A
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