R01UH0136EJ0210 Rev.2.10
Page 63 of 800
Jul 31, 2012
M16C/64A Group
7. Voltage Detector
7.2.1
Voltage Detector 2 Flag Register (VCR1)
This register does not change at voltage monitor 1 reset, voltage monitor 2 reset, oscillator stop detect
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 monitors 1 and 2
enabled) and the VC27 bit in the VCR2 register is 1 (voltage detector 2 enabled).
Condition to become 0:
•
VCC1 < Vdet2 (when the VW12E bit is 1 and the VC27 bit is 1)
Conditions to become 1:
•
VCC1
≥
Vdet2 (when the VW12E bit is 1 and the VC27 bit is 1)
•
The VC27 bit is 0 (voltage detector 2 disabled).
b7
0
0
0
0
0
0
0
b6 b5 b4
b1
b2
b3
Voltage Detector 2 Flag Register
Symbol
VCR1
Address
0019h
Bit Symbol
Bit Name
RW
—
(b2-b0)
Reset Value
0000 1000b (hardware reset, power-on
reset, voltage monitor 0 reset)
RW
b0
Function
Reserved bits
RW
Reserved bits
Set to 0
—
(b7-b4)
Set to 0
VC13
RO
Low-voltage monitor flag
0: VCC1 < Vdet2
1: VCC1
≥
Vdet2
or voltage detector 2 disabled
Содержание M16C/60 Series
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