M62055FP Datasheet, PDF (1/6 Pages) Mitsubishi Electric Semiconductor – 3V POWER SUPPLY with WATCHDOG TIMER

MITSUBISHI<Dig./Ana.INTERFACE>
M62055FP
3V POWER SUPPLY with WATCHDOG TIMER
GENERAL DESCRIPTION
M62055FP is a 3V power supply featuring a watchdog
timer function for a microcontroller system.
It can be a power source of 3V ± 5% by utilizing the
reference voltage and amplifier.
It can also generate a reset pulse for the applied
systems during power-on, moreover it includes the
watchdog timer for a self diagnostics of the system,
which can prevent system erroneous functions.
FEATURES
• Power-on reset
• Watchdock timer
• High accuracy voltage source of 3V ±5% (max)
• Overcurrent protection circuit
• The voltage detection accuracy of ±5% (max)
• Output power (Vo) cutoff function at erroneous
conditions
• Backward voltage protection circuits for inputs and
outputs
PIN CONFIGURATION(TOP VIEW)
GND
WD
TC
RESET
Vcc
CLM
VDD
VOC
Outline 8P2S
APPLICATION
Handy information terminal equipment, CD-ROM, Portable audio
equipment.
BLOCK
DIAGRAM
Vcc
CLM
Vcc
VOLTAGE DETECTOR
(CURRENT LIMITER)
START
CIRCUIT
VD
VO
Vcc
Vcc
The input and
output reversal
conservation circuit
56K
40K
Vref
=1.25v
Note ; It indicates Vo,
unless otherwise noted
Set priority
RQ
SQ
Vcc
Reset priority
RQ
SQ
._=.^V0r.e9fv
RISE DELAY
(300µsec)
._{=.1V.r2e5f v}
._=V.1r.e5fv
._=V.1r.e5fv
Reset
priority
RQ
SQ
Reset
priority
SQ
RQ
Set priority
SQ
RQ
GND
WD
TC
MITSUBISHI
(1/6)
RESET
970508