r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 101

• 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 7.7
When VW2C1 bit is 0
(digital filter enabled)
and
VCAC2 bit is 1 (both edges)
When VW2C1 bit is 0
(digital filter enabled),
VCAC2 bit is 0
(one edge),
and
VW2C7 bit is 0
(VCC reaches Vdet2 or above)
When VW2C1 bit is 0
(digital filter enabled),
VCAC2 bit is 0
(one edge),
and
VW2C7 bit is 1
(VCC reaches Vdet2 or below)
When VW2C1 bit is 1
(digital filter disabled)
and
VCAC2 bit is 1 (both edges)
When VW2C1 bit is 1
(digital filter disabled),
VCAC2 bit is 0
(one edge),
and
VW2C7 bit is 0
(VCC reaches Vdet2 or above)
When VW2C1 bit is 1
(digital filter disabled),
VCAC2 bit is 0
(one edge),
and
VW2C7 bit is 1
(VCC reaches Vdet2 or below)
VW2C1 to VW2C3, VW2C7: Bits in VW2C register
VCAC2: Bit in VCAC register
The above diagram applies under the following conditions:
• VCA27 bit in VCA2 register = 1 (voltage detection 2 circuit enabled)
• VW2C0 bit in VW2C register = 1 (voltage detection 2 interrupt enabled)
Note:
1. If voltage monitor 0 reset is not used, VCC must be at least 1.8 V.
Preliminary document
Specifications in this document are tentative and subject to change.
Example of Voltage Monitor 2 Interrupt Operation
VW2C2 bit
Voltage monitor 2 interrupt
request
VW2C2 bit
Voltage monitor 2 interrupt
request
VW2C2 bit
Voltage monitor 2 interrupt
request
VW2C2 bit
Voltage monitor 2 interrupt
request
VW2C2 bit
Voltage monitor 2 interrupt
request
VW2C2 bit
Voltage monitor 2 interrupt
request
1.8 V
Vdet2
(1)
VW2C3 bit
VCC
sampling clock
Digital filter
 2 cycles
Set to 0 by acknowledgement
of an interrupt request
Set to 0 by acknowledgement
of an interrupt request
Set to 0 by a program
Set to 0 by acknowledgement
Set to 0 by a program
of an interrupt request
Set to 0 by a program
sampling clock
Digital filter
 2 cycles
7. Voltage Detection Circuit
Set to 0 by a program
Set to 0 by acknowledgement
of an interrupt request
Set to 0 by acknowledgement
of an interrupt request
Set to 0 by acknowledgement
of an interrupt request
Set to 0 by a program
Set to 0 by a program
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