r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 645

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
30.2.6
Notes:
After Reset
1. The VW2C0 is enabled when the VCA27 bit in the VCA2 register is set to 1 (comparator A2 circuit enabled).
2. When using the digital filter (while the VW2C1 bit is 0), set the CM14 bit in the CM1 register to 0 (low-speed on-
3. The VW2C2 bit is enabled when the VCA27 bit in the VCA2 register is set to 1 (comparator A2 circuit enabled).
4. Set this bit to 0 by a program. When 0 is written by a program, this bit is set to 0 (and remains unchanged even if
5. The VW2C7 bit is enabled when the VCAC2 bit in the VCAC register is set to 0 (one edge). After setting the
6. When the VW2C0 bit is set to 1 (enabled), do not set the VW2C1 bit and bits VW2F1 and VW2F0 simultaneously
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 003Ah
Symbol VW2C7
Set the VW2C0 bit to 0 (disabled) when the VCA27 bit is set to 0 (comparator A2 circuit disabled). To set the
VW1C0 bit to 1 (enabled), follow the procedure shown in Table 30.4 Procedure for Setting Bits Associated
Comparator A2 Interrupt .
chip oscillator on).
To use the comparator A2 interrupt to exit stop mode, set the VW2C1 bit in the VW2C register to 1 (digital filter
disabled).
1 is written to it).
VCAC2 bit to 0, set the VW2C7 bit.
(with one instruction).
Set the PRC3 bit in the PRCR register to 1 (write enabled) before rewriting the VW2C register.
Rewriting the VW2C register may set the VW2C2 bit to 1. After rewriting this register, set the VW2C2 bit to 0.
Bit
VW2C0 Comparator A2 interrupt enable bit
VW2C1 Comparator A2 digital filter disable mode
VW2C2 Comparator A2 interrupt flag
VW2C3 WDT detection monitor flag
VW2C6 Reserved bit
VW2C7 Comparator A2 interrupt
Symbol
VW2F0 Sampling clock select bit
VW2F1
Voltage Monitor 2 Circuit Control Register (VW2C)
b7
1
select bit
generation condition select bit
VW2C6
b6
0
(2, 6)
VW2F1
Bit Name
b5
0
(6)
VW2F0
(4)
b4
(3, 4)
0
(5)
(1)
VW2C3
b3
0
0: Disabled
1: Enabled
0: Digital filter enable mode
1: Digital filter disable mode
[Condition to set this bit to 0]
[Condition to set this bit to 1]
0: Not detected
1: Detected
b5 b4
Set to 0.
0: When LVCMP2 reaches reference voltage
1: When LVCMP2 reaches reference voltage
0 is written.
When an interrupt request is generated.
0 0: fOCO-S divided by 1
0 1: fOCO-S divided by 2
1 0: fOCO-S divided by 4
1 1: fOCO-S divided by 8
(digital filter circuit enabled)
(digital filter circuit disabled)
or above.
or below.
VW2C2
b2
0
VW2C1
b1
1
Function
VW2C0
b0
0
30. Comparator A
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R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W