M16C65 Datasheet, PDF (131/829 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.
VCC1
Vdet2
7. Voltage Detector
VC13 bit
Digital filter sampling clock × 3 cycles
Digital filter sampling clock × 3 cycles
When the VW2C1
bit is 0 (digital filter
enabled)
VW2C2 bit
Voltage monitor 2
interrupt request
(when VW2C6 is 0)
Internal reset signal
(when VW2C6 is 1)
Set to 0 by a program
Set to 0 automatically by
accepting an interrupt request
When the VW2C1
bit is 1 (digital filter
disabled) and the
VW2C7 bit is 0
(when VCC1
reaches Vdet2 or
above)
VW2C2 bit
Voltage monitor 2
interrupt request
(when VW2C6 is 0)
When the VW2C1
bit is 1 (digital filter
disabled) and the
VW2C7 bit is 1
(when VCC1
reaches Vdet2 or
below)
VW2C2 bit
Voltage monitor 2
interrupt request
(when VW2 C6 is 0)
Internal reset signal
(when VW2C6 is 1)
Set to 0 by a program
Set to 0 automatically by
Set to 0 by a program _{accepting an interrupt request}
Set to 0 automatically by
accepting an interrupt request
VC13 : Bit in the VCR1 register
VW2C1, VW2C2, VW2C6, VW2C7 : Bits in the VW2C register
The above diagram applies under the following conditions:
•The VC27 bit in the VCR2 register is 1 (voltage detection 2 circuit enabled).
•The VW2C0 bit in the VW2C register is 1 (voltage monitor 2 interrupt/reset enabled).
Note:
1. When not using the voltage monitor 0 reset, operate at 2.7 V or above (VCC1).
Figure 7.8 Voltage Monitor 2 Interrupt/Reset Operation Example
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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