PD17012_15 Datasheet, PDF (279/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Figure 22-5. Power-on Reset and Supply Voltage VDD
(a) During normal operation (including halt status)
5V
VDD
0V
H
CE
L
H
XOUT
L
Power-on-
H
clear signal
L
3.5 V
Normal operation
(b) In clock stop status
Power-on-clear voltage
Device operation stops Halt status
50 ms
Power-on clear released
Oscillation starts
Power-on reset
Program starts from address 0.
VDD
CE
XOUT
Power-on-
clear signal
5V
2.3 V
0V
H
L
H
L
H
L
Normal operation
Clock stop
STOP s instruction
3.5 V
Power-on-clear voltage
Device operation stops Halt status
50 ms
Power-on clear released
Oscillation starts
Power-on reset
Program starts from address 0.
(c) When supply voltage VDD rises from 0 V
5V
VDD
0V
H
CE
L
H
XOUT
L
Power-on-
H
clear signal
L
3.5 V
Power-on-clear voltage
Device operation stops Halt status
50 ms
Power-on clear released Power-on reset
Oscillation starts
Program starts from address 0.
Data Sheet U10101EJ4V0DS
277