PD17012_15 Datasheet, PDF (281/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Figure 22-6. Relationship Between Power-on Reset and CE Reset
(a) If VDD and CE pins rise simultaneously
5V
VDD
0V
H
CE
L
H
Basic timer 0 carry
FF setting pulse _L
3.5 V
Power-on-clear voltage
Operation Halt status
stops
50 ms
Normal operation
(b) If CE pin rises in halt status
Power-on reset
Program starts
5V
VDD
0V
H
CE
L
H
Basic timer 0 carry
FF setting pulse _L
3.5 V
Power-on-clear voltage
Operation _{Halt status}
stops
50 ms
Normal operation
(c) If CE pin rises after power-on reset
Power-on reset
Program starts
5V
VDD
0V
H
CE
L
H
Basic timer 0 carry
FF setting pulse _L
3.5 V
Power-on-clear voltage
Operation _{Halt status}
stops
50 ms
Normal operation
Power-on reset
Program starts
CE reset
Program starts
Data Sheet U10101EJ4V0DS
279