R01UH0092EJ0110 Rev.1.10
Page 58 of 807
Jul 31, 2012
M16C/64C Group
6. Resets
6.5
Notes on Resets
6.5.1
Power Supply Rising Gradient
When supplying power to the MCU, make sure that the power supply voltage applied to the VCC1 pin
meets the SVCC conditions.
Figure 6.7
SVCC Timing (3.6 V < VCC1)
Figure 6.8
SVCC Timing (VCC1
≤
3.6 V)
6.5.2
Power-On Reset
Use the voltage monitor 0 reset together with the power-on reset. To use the power-on reset, set the
LVDAS bit in the OFS1 address to 0 (voltage monitor 0 reset enabled after hardware reset) and the
VDSEL1 bit to 0 (Vdet0_2). In this case, the voltage monitor 0 reset is enabled (the VW0C0 bit and bit 6
in the VW0C register are 1, and the VC25 bit in the VCR2 register is 1) after power-on reset. Do not
disable these bits by a program.
Symbol
Parameter
Standard
Unit
Min.
Typ.
Max.
SV
CC
Power supply V
CC1
rising gradient
(Voltage range: 0 to 2.0 V)
0.05
V/ms
Power supply V
CC1
rising gradient
(Voltage range: 2.0 V to V
CC1
)
3.6 V < V
CC1
≤
5.5 V
5.5
V/ms
VCC1
[V]
5.0
2.0
0
Minimum value of SVCC
(0 V to 2 V)
Power-on
Time
Maximum value of SVCC
(2.0 V to VCC1)
VCC1
[V]
3.0
2.0
0
Minimum value of SVCC
(0 V to 2 V)
Power-on
Time
Содержание M16C Series
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