M16C65 Datasheet, PDF (124/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
7. Voltage Detector
7.4.2 Voltage Detection 0 Circuit
When the VC25 bit in the VCR2 register is 1 (voltage detection 0 circuit enabled), the voltage detection
0 circuit monitors the voltage applied to the VCC1 pin and detects whether the voltage passes Vdet0 by
rising or falling. The level of Vdet0 can be selected by the VDSEL1 bit in the OFS1 address.
Voltage detection 0 circuit
VC25
fOCO-S
Voltage monitor 0 reset generator
VW0F1 to VW0F0
00b
01b
10b
1/2 1/2 1/2 ^11b
VCC1 +
Internal
reference ^-
voltage
Voltage detection
0 signal
When the VC25 bit is set to 0
(disabled), the voltage detection 0
signal goes high.
Digital
filter
0 ^VW0C1
1
VW0C0
Voltage
monitor 0
reset signal
VW0C0 to VW0C1, VW0F0 to VW0F1: Bits in the VW0C register
VC25: Bit in the VCR2 register
Figure 7.3 Voltage Monitor 0 Reset Generator
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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