M16C65 Datasheet, PDF (113/829 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.
7.2.1 Voltage Detection 2 Circuit Flag Register (VCR1)
7. Voltage Detector
Voltage Detection 2 Circuit Flag Register
b7 b6 b5 b4 b3 b2 b1 b0
0000 000
Symbol
VCR1
Address
0019h
After Reset
0000 X000b (hardware reset, power-on
reset, voltage monitor 0 reset)
Bit Symbol
Bit Name
Function
RW
—
(b2-b0)
Reserved bits
Set to 0
RW
0 : VCC1 < Vdet2
VC13 Low-voltage monitor flag
1 : VCC1 ≥ Vdet2
RO
or voltage detection circuit disabled
—
(b7-b4)
Reserved bits
Set to 0
RW
This register does not change at voltage monitor 1 reset, voltage monitor 2 reset, oscillation stop
detection reset, watchdog timer reset, or software reset.
VC13 (Low-Voltage Monitor Flag) (b3)
The VC13 bit is enabled when the VW12E bit in the VWCE register is 1 (voltage detection 1 and 2
circuits enabled) and the VC27 bit in the VCR2 register is 1 (voltage detection 2 circuit enabled).
Condition to become 0:
• VCC1 < Vdet 2 (when the VW12E bit is 1 and the VC27 bit is 1)
Condition to become 1:
• VCC1 ≥ Vdet 2 (when the VW12E bit is 1 and the VC27 bit is 1)
• The VC27 bit in the VCR2 register is 0 (voltage detector 2 disabled).
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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