M16C28 Datasheet, PDF (352/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
19. Electrical Characteristics)
Table 19.6 Voltage Detection Circuit Electrical Characteristics ^{(1, 3)}
Symbol
Parameter
Standard
Measurement Condition
Unit
Min. Typ. Max.
Vdet4
Low Voltage Detection Voltage⁽¹⁾
3.2 3.8 4.45 V
Vdet3
Vdet3s
Reset Level Detection Voltage⁽¹⁾
Low Voltage Reset Hold Voltage⁽²⁾
VCC=0.8 to 5.5V
2.3 2.8 3.4 V
1.7 V
Vdet3r
Low Voltage Reset Release Voltage
2.35 2.9 3.5 V
NOTES:
1. Vdet4 >Vdet3
2. Vdet3s is the minmum voltage to maintain "hardware reset 2".
3. The voltage detection circuit is designed to use when VCC is set to 5V.
4. If the supply power voltage is greater than the reset level detection voltage when the reset level detection
voltage is less than 2.7V, the operation at f(BCLK) ≤ 10MHz is guranteed. However, A/D conversion, serial I/O,
flash memory program and erase are excluded.
Table 19.7 Power Supply Circuit Timing Characteristics
Symbol
Parameter
Standard
Measurement Condition
Unit
Min. Typ. Max.
td(P-R)
Wait Time to Stabilize Internal Supply Voltage when
Power-on
2 ms
td(ROC)
Wait Time to Stabilize Internal On-chip Oscillator when
Power-on
td(R-S) STOP Release Time
VCC=2.7 to 5.5V
40 µs
150 µs
td(W-S)
Low Power Dissipation Mode Wait Mode Release
Time
150 µs
td(S-R) Hardware Reset 2 Release Wait Time
VCC=Vdet3r to 5.5V
6⁽¹⁾ 20 ms
td(E-A) Voltage Detection Circuit Operation Start Time
VCC=2.7 to 5.5V
20 µs
NOTES:
1. When VCC=5V
Rev. 2.00 Jan. 31, 2007 ^{page 332} of 385
REJ09B0047-0200