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18. Electrical Characteristics (M16C/26A)
page 260
8
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Table 18.6. Voltage Detection Circuit Electrical Characteristics (Note 1, Note 3)
Table 18.7. Power Supply Circuit Timing Characteristics
Symbol
Standard
Typ.
Unit
Measuring condition
Min.
Max.
Parameter
Vdet4
Voltage down detection voltage (Note 1)
V
VCC=1.7 to 5.5V
Note 1: Vdet4 > Vdet3
Note 2: Vdet3s is the min voltage at which "hardware reset 2" is maintained.
Note 3: The voltage detection circuit is designed to use when VCC is set to 5V.
Note 4: When reset level detection voltage is 2.7V or below, operating with f(BCLK)
10MHz is guaranteed if the supply voltage is over the reset
level detection voltage excluding A/D conversion accuracy, serial I/O and flash memory program and erase.
3.2
Vdet3
Reset level detection voltage (Notes 1, Note 3)
V
Symbol
Standard
Typ.
Unit
Measuring condition
Min.
Max.
Parameter
2
VCC=2.7 to 5.5V
Note 1: When VCC = 5V
150
6 (Note 1)
td(R-S)
STOP release time
20
td(S-R)
Hardware reset 2 release wait time
s
ms
Vdet3s
Low voltage reset retention voltage (Note 2)
Vdet3r
Low voltage reset release voltage
V
td(P-R)
Time for internal power supply stabilization during powering-on
td(E-A)
oltage detection circuit operation start time
ms
VCC=2.7 to 5.5V
VCC=Vdet3r to 5.5V
td(W-S)
Low power dissipation mode wait mode release time
150
s
3.8
4.45
td(ROC)
Time for internal on-chip oscillator stabilization during powering-on
40
2.3
2.8
3.4
1.7
2.35
2.9
3.5
s
<
=
td(P-R)
Time for Internal Power
Supply Stabilization During
Powering-On
CPU clock
td(R-S)
(a)
(b)
td(W-S)
td(R-S)
STOP Release Time
td(W-S)
Low Power Dissipation Mode
Wait Mode Release Time
td(S-R)
Vdet3r
VCC
CPU clock
VC26, VC27
td(E-A)
Stop
Operate
Interrupt for
(a) Stop mode release
or
(b) Wait mode release
td(S-R)
Voltage Down Detection
Reset (Hardware Reset 2)
Release Wait Time
td(E-A)
Voltage Detection Circuit
Operation Start Time
Voltage Detection Circuit
ROC
RESET
VCC
td(ROC)
td(P-R)
td(R
)
Time for Internal On-chip
Oscillator Stabilization During
Powering-On