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NO.
SIGNAL
140
VDDA (2.5V)
141
VREFB
142
VCL
143
VREFT
144
VSSA
7.3.6. RESET CIRCUIT (WATCH DOG TIMER)
The output signal (reset) from pin 4 of the voltage detect IC (IC507) is input to the ASIC (IC501)
114 and 106 pins.
1. During a momentary power interruption, a positive reset pulse of
50~70 msec is generated and the system is reset completely.
2. The watch dog timer, built-in the ASIC (IC501), is initialized by the
CPU about every 1.5 ms.
When a watch dog error occurs, pin 115 of the ASIC (IC501)
I/O
POWER
SUPPLIED
VOLTAGE
3.3V
A
2.5V
A
3.3V
A
3.3V
GND
157
DESCRIPTION
POWER SOURCE (ANALOG +2.5V)
A/D CONVERTER'S ZERO STANDARD
VOLTAGE OUTPUT
ANALOG PART STANDARD VOLTAGE
SIGNAL
A/D CONVERTER'S FULL SCALE
VOLTAGE OUTPUT
POWER SOURCE (ANALOG GND)
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Table of Contents
Troubleshooting
