r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 123

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
9.2.9
Notes:
After Reset
After Reset
1. To use the voltage monitor 0 reset, set the VCA25 bit to 1.
2. To use the voltage detection 1 interrupt or the VW1C3 bit in the VW1C register, set the VCA26 bit to 1.
3. To use the voltage detection 2 interrupt or the VW2C3 bit in the VW2C register, set the VCA27 bit to 1.
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 00034h
Symbol
After the VCA26 bit is set from 0 to 1 and td(E-A) has elapsed, the voltage detection 1 circuit operates.
After the VCA27 bit is set from 0 to 1 and td(E-A) has elapsed, the voltage detection 2 circuit operates. Set the
PRC3 bit in the PRCR register to 1 (write enabled) before rewriting the VCA2 register.
Set the PRC3 bit in the PRCR register to 1 (write enabled) before rewriting the VCA2 register.
Bit
Symbol
VCA25
VCA26
VCA27
Voltage Detection Register 2 (VCA2)
—
—
—
—
—
The above applies when the LVDAS bit in the OFS register is 1.
The above applies when the LVDAS bit in the OFS register is 0.
VCA27
Preliminary document
Specifications in this document are tentative and subject to change.
b7
0
0
Reserved
Voltage detection 0 enable bit
Voltage detection 1 enable bit
Voltage detection 2 enable bit
VCA26
b6
0
0
Bit Name
VCA25
b5
0
1
b4
—
0
0
(1)
(2)
(3)
Set to 0.
0: Voltage detection 0 circuit disabled
1: Voltage detection 0 circuit enabled
0: Voltage detection 1 circuit disabled
1: Voltage detection 1 circuit enabled
0: Voltage detection 2 circuit disabled
1: Voltage detection 2 circuit enabled
b3
—
0
0
b2
—
0
0
Function
b1
—
0
0
9. Clock Generation Circuit
b0
—
0
0
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R/W
R/W
R/W
R/W
R/W