UPD17073 NEC, UPD17073 Datasheet - Page 200

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

200
Setting BTM0CY
flag inhibited
Setting BTM0CY
flag enabled
Note 1.8 V is the maximum value and the actual power-ON clear voltage is in a range that does not exceed this
<4>
<12>
maximum value. For details, refer to 20.4.1 Power-ON clear voltage.
Clock stop
Clock stop
CE = low
STOP 0
STOP 0
<10>
Figure 20-8. Status Transition of BTM0CY Flag
<5>
<13>
SKT1 BTM0CY or
SKF1 BTM0CY
operation
operation
Normal
Normal
<2>
<3>
CE = L
Crystal oscillation starts.
Forced halt (125 ms or more)
<1>
CE = don't care
Power-ON reset
Operation stops
V
CE = H L
CE = L H
CE = L H
CE = H L
CE = L H
CE = L H
DD
= low
V
<11>
DD
= L
CE = H
<6>
<14>
SKT1 BTM0CY or
SKF1 BTM0CY
1.8 V
operation
operation
Normal
Normal
<16>
<17>
Note
<8>
<9>
Crystal oscillation starts.
Forced halt (125 ms or more)
Crystal oscillation starts.
Forced halt (125 ms or more)
BTM0CY = 0
BTM0CY = 1
Normal operation.
CE reset wait
Normal operation.
CE reset wait
CE = high
<15>
<7>
CE reset
CE reset
Rising of basic timer 0
carry FF setting pulse
Rising of basic timer 0
carry FF setting pulse
PD17072,17073