Datasheet
M32C/87 Group (M32C/87, M32C/87A, M32C/87B) 5. Electrical Characteristics
REJ03B0127-0151 Rev.1.51 Jul 31, 2008
Page 56 of 85
Table 5.11 Voltage Detection Circuit Electrical Characteristics
(VCC1 = VCC2 = 3.0 to 5.5 V, VSS = 0 V, Topr = 25°C unless otherwise specified)
NOTES:
1. Vdet4 > Vdet3
2. Vdet3r > Vdet3 is not guaranteed.
Table 5.12 Power Supply Circuit Timing Characteristics
NOTE:
1. When VCC1 = 5 V
Figure 5.1 Power Supply Timing Diagram
Symbol Parameter Measurement Condition
Standard
Unit
Min. Typ. Max.
Vdet4 Vdet4 detection voltage
VCC1 = 3.0 V to 5.5 V
3.3 3.8 4.4 V
Vdet3 Vdet3 detection voltage 3.0 V
Vdet3s Hardware reset 2 hold voltage 2.0 V
Vdet3r Hardware reset 2 release voltage 3.1 V
Symbol Parameter Measurement Condition
Standard
Unit
Min. Typ. Max.
td(P-R) Wait time to stabilize internal supply voltage
when power-on
VCC1 = 3.0 to 5.5 V 2 ms
td(S-R) Wait time to release hardware reset 2 VCC1 = Vdet3r to 5.5 V 6
(1)
20 ms
td(E-A) Start-up time for Vdet3 and Vdet4 detection
circuit
VCC1 = 3.0 to 5.5 V 20 μs
td(P-R)
VCC1
CPU clock
Recommended
operating voltage
td(P-R)
Wait time to stabilize internal
supply voltage when power-on
td(S-R)
VCC1
CPU clock
Vdet3r
td(S-R)
Wait time to release
hardware reset 2
td(E-A)
td(E-A)
Start-up time for Vdet3 and Vdet4
detection circuit
VC26, VC27
Vdet3 and Vdet4
detection circuit
Stop Operating
VCC1 = VCC2 = 5V