upd17072 Renesas Electronics Corporation., upd17072 Datasheet - Page 196

• Manufacturer Part Number: upd17072
• Description: 4-bit Single-chip Microcontroller With Hardware For Digital Tuning System
• Manufacturer: Renesas Electronics Corporation.

Power-ON clear signal
Power-ON clear signal
196
Power-ON clear signal
(a) During CPU operation (including halt status)
(b) In clock stop mode
(c) When supply voltage V
V
CE
X
V
CE
X
V
CE
X
DD
OUT
DD
OUT
DD
OUT
3 V
0 V
H
L
H
L
H
L
3 V
0 V
H
L
H
L
H
L
Figure 20-5. Power-ON Reset and Supply Voltage V
3 V
0 V
H
L
H
L
H
L
Normal
operation
STOP s instruction
1.8 V
DD
1.8 V
1.7 V
Normal operation
rises from 0 V
(T
A
= –20 to +70 C, when CPU, PLL, A/D are operating)
Clock stop
Device operation stops
Device operation stops
Device operation stops
1.8 V
Power-ON clear released.
Oscillation starts.
Power-ON clear released.
Oscillation starts.
Power-ON clear released.
Oscillation starts.
Halt status
Halt status
Halt status
or more
125 ms
or more
125 ms
DD
or more
125 ms
Power-ON clear voltage
Power-ON clear voltage
Power-ON reset
Program starts from address 0.
Power-ON reset
Program starts from address 0.
Power-ON clear voltage
Power-ON reset
Program starts from address 0.
PD17072,17073