R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 32

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 5.7 Voltage Detection Circuit Block
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.
Internal
reference
voltage
V
CC
Jan 27, 2006
VC27
+
-
Noise canceller
page 21 of 205
VCR1 register
VC13 bit
b3
CC
pin with respect to Vdet. The user
5.4 Voltage Detection Circuit
Voltage detection
interrupt signal