r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 99

• 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 7.6
When VW1C1 bit is 0
(digital filter enabled)
and
VCAC1 bit is 1 (both edges)
When VW1C1 bit is 0
(digital filter enabled),
VCAC1 bit is 0
(one edge),
and
VW1C7 bit is 0
(VCC reaches Vdet1 or above)
When VW1C1 bit is 0
(digital filter enabled),
VCAC1 bit is 0
(one edge),
and
VW1C7 bit is 1
(VCC reaches Vdet1 or below)
When VW1C1 bit is 1
(digital filter disabled)
and
VCAC1 bit is 1 (both edges)
When VW1C1 bit is 1
(digital filter disabled),
VCAC1 bit is 0
(one edge),
and
VW1C7 bit is 0
(VCC reaches Vdet1 or above)
When VW1C1 bit is 1
(digital filter disabled),
VCAC1 bit is 0
(one edge),
and
VW1C7 bit is 1
(VCC reaches Vdet1 or below)
VW1C1 to VW1C3, VW1C7: Bits in VW1C register
VCAC1: Bit in VCAC register
The above diagram applies under the following conditions:
• VCA26 bit in VCA2 register = 1 (voltage detection 1 circuit enabled)
• VW1C0 bit in VW1C register = 1 (voltage detection 1 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 1 Interrupt Operation
VW1C2 bit
Voltage monitor 1 interrupt
request
VW1C2 bit
Voltage monitor 1 interrupt
request
VW1C2 bit
Voltage monitor 1 interrupt
request
VW1C2 bit
Voltage monitor 1 interrupt
request
VW1C2 bit
Voltage monitor 1 interrupt
request
VW1C2 bit
Voltage monitor 1 interrupt
request
1.8 V
Vdet1
(1)
VW1C3 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 of
Set to 0 by a program
an interrupt request
Set to 0 by a program
sampling clock
Digital filter
 2 cycles
Set to 0 by a program
7. Voltage Detection Circuit
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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