Voltage Detection Circuit - Renesas M16C Series Hardware Manual

R8C/11 Group

5.4 Voltage Detection Circuit

The voltage detection circuit monitors the input voltage at the V
program can check for voltage detection using the VC13 bit or set up the voltage detection interrupt
register to generate a hardware reset 2 or voltage detection interrupt.
Figure 5.7 shows the voltage detection circuit. Figure 5.8 shows VCR1 and VCR2 registers. Figure 5.9
shows the D4INT register. Figure 5.10 shows an operation example of the voltage detection circuit. Fig-
ure 5.11 to 5.12 show the operation example of the voltage detection circuit to get out of stop mode.
VC27
V +
CC
Internal
-
reference
voltage
Figure 5.7 Voltage Detection Circuit Block
Rev.1.20 Jan 27, 2006
REJ09B0062-0120
Noise canceller
page 21 of 204
CC
VCR1 register
b3
VC13 bit
5.4 Voltage Detection Circuit
pin with respect to Vdet. The user
Voltage detection
interrupt signal