Renesas M16C FAMILY Hardware Manual page 34

Under development
Preliminary specification
Specifications in this manual are tentative and subject to change.
R8C/11 Group
V
det
V
CC
Internal reset signal(D46 bit = 1)
VC13 bit
VC27 bit
CM 10 bit
Voltage detection
interrupt request
(D46 bit = 0)
The above applies to the following conditions.
D4INT register D40 = 1 (voltage detection interrupt enabled)
D4INT register D41 = 1 (use voltage deteciton interrupt to get out of stop mode)
D4INT register D47 = 1 ( Vcc is below Vdet)
Sampling time : 4 cycles of sampling clock selected in DF0 bit to DF1 bit
Figure 5.11 Operation Example of Voltage Detection Circuit in use to get out of stop mode (1)
V
det
V
CC
Internal reset signal
(D46 bit = 1)
VC13 bit
VC27 bit
CM10 bit
Voltage detection
interrupt request
(D46 bit = 0)
The above applies to the following conditions.
D4INT register D40 bit = 1 (voltage detection interrupt enabled)
D4INT register D41 bit = 1 (use voltage detection interrupt to get out of stop mode)
D4INT register D47 bit = 0 (Vcc is over Vdet)
Sampling time : 4 cycles of sampling clock selected in DF0 bit to DF1 bit
Figure 5.12 Operation Example of Voltage Detection Circuit in use to get out of stop mode (2)
Rev.0.91 2003 Sep 08
5.0V
Set to "1" by program (voltage detection circuit enabled)
Set to "1" by program (voltage detection circuit enabled)
page 24 of 184
Interrupt acknowledged
5.4 Voltage Detection Circuit
CM10 : CM1 register bit
VC13 : VCR1 register bit
VC27 : VCR2 register bit
D46 : D4INT register bit
5.0V
1
x 32
f
RING
Interrupt acknowledged
CM10 : CN1 register bit
VC13 : VCR1 register bit
VC27 : VCR2 register bit
D46 : D4INT register bit