M16C65 Datasheet, PDF (128/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
7. Voltage Detector
VCC1
Vdet1
VW1C3 bit
Digital filter sampling clock × 3 cycles
Digital filter sampling clock × 3 cycles
VW1C2 bit
When the VW1C1 bit
is 0 (digital filter
enabled)
Voltage monitor 1
interrupt request
(when VW1C6 is 0)
Internal reset signal
(when VW1C6 is 1)
Set to 0 by a program
Set to 0 automatically by
accepting an interrupt request
When the VW1C1 bit
is 1 (digital filter
disabled) and the
VW1C7 bit is 0 (when
VCC1 reaches Vdet1
or above)
VW1C2 bit
Voltage monitor 1
interrupt request
(when VW1C6 is 0)
When the VW1C1 bit
is 1 (digital filter
disabled) and the
VW1C7 bit is 1 (when
VCC1 reaches Vdet1
or below)
VW1C2 bit
Voltage monitor 1
interrupt request
(when VW1C6 is 0)
Internal reset signal
(when VW1C6 is 1)
Set to 0 by a program
Set to 0 by a program
Set to 0 automatically by
accepting an interrupt request
Set to 0 automatically by
accepting an interrupt request
VW1C1, VW1C2, VW1C3, VW1C6, VW1C7 : Bits in the VW1C register
The above diagram applies under the following conditions:
•The VC26 bit in the VCR2 register is 1 (voltage detection 1 circuit enabled).
•The VW1C0 bit in the VW1C register is 1 (voltage monitor 1 interrupt/reset enabled).
Note:
1. When not using the voltage monitor 0 reset, operate at 2.7 V or above (VCC1).
Figure 7.6 Voltage Monitor 1 Interrupt/Reset Operation Example
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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