r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 88

• 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
Figure 7.3
Figure 7.4
Voltage detection 1 circuit
Voltage detection 2 circuit
VCC
VCC
VD1S0 to
VD1S3
VW2C0 to VW2C3, VW2F0, VW2F1, VW2C7: Bits in VW2C register
VCA27: Bit in VCA2 register
IRQ2SEL: Bit in CMPA register
VCAC2: Bit in VCAC register
Notes:
1. When the VCA27 bit is 0 (disabled), the voltage detection 2 signal will be high.
2. The VW2C2 bit is set to 0 by Writing 0 (not detected) by a program. When the VCA27 bit is 0 (voltage detection 2 circuit disabled), the VW2C2 bit will be 0.
selection
Level
selection
Level
Internal reference voltage
VW1C0 to VW1C3, VW1F0 to VW1F1, VW1C7: Bits in VW1C register
VCA26: Bit in VCA2 register
VD1S1 to VD1S3: Bits in VD1LS register
IRQ1SEL: Bit in COMPA register
VCAC1: Bit in VCAC register
Notes:
1. When the VCA26 bit is 0 (disabled), the voltage detection 1 signal will be high.
2. The VW1C2 bit is set to 0 by writing 0 (not detected) by a program. When the VCA26 bit is 0 (voltage detection 1 circuit disabled), the VW1C2 bit will be 0.
Internal reference voltage
VCA27
Preliminary document
Specifications in this document are tentative and subject to change.
Voltage Monitor 1 Interrupt Generation Circuit Block Diagram
+
Voltage Monitor 2 Interrupt Generation Circuit Block Diagram
-
VCA26
+
-
detection 2
fLOCO
signal
Voltage
VW2C3
(1)
Voltage monitor 2 interrupt generation circuit
detection 1
fLOCO
signal
Voltage
(1)
VW2C1 = 0
VW2C1 = 1
1/2
Voltage monitor 1 interrupt generation circuit
VW1C1 = 0
VW1C1 = 1
VW1C3
1/2
1/2
VW2F1 and VW2F0
1/2
VW1F1 and VW1F0
1/2
= 00b
= 01b
= 11b
= 10b
1/2
= 00b
= 01b
= 10b
= 11b
Digital
filter
Digital
filter
VCAC2
VW2C7
VCAC1
VW1C7
selection
circuit
Edge
selection
circuit
Edge
VW2C2
VW1C2
VW2C0
IRQ2SEL
IRQ1SEL
VW1C0
(2)
(2)
7. Voltage Detection Circuit
Watchdog timer
interrupt signal
Watchdog timer
interrupt signal
Voltage monitor 2
interrupt signal
Voltage monitor 1
interrupt signal
Page 57 of 725
Maskable
interrupt signal
Non-maskable
interrupt signal
Maskable
interrupt signal
Non-maskable
interrupt signal