UPD17073 NEC, UPD17073 Datasheet - Page 197
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UPD17073
Manufacturer Part Number
UPD17073
Description
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
Manufacturer
NEC
Datasheet
1.UPD17073.pdf
(226 pages)
- Current page: 197 of 226
- Download datasheet (2Mb)
20.5 Relations between CE Reset and Power-ON Reset
is applied for the first time.
20.5.1 When V
20.5.2 When CE pin rises during forced halt status of power-ON reset
above.
20.5.3 When CE pin rises after power-ON reset
address 0000H again at the rising edge of the next basic timer 0 carry FF setting signal because of CE reset.
There is a possibility that power-ON reset and CE reset are effected simultaneously when the supply voltage V
The reset operations at this time are described in 20.5.1 through 20.5.3.
Figure 20-6 (a) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset.
Figure 20-6 (b) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset, in the same manner as 20.5.1
Figure 20-6 (c) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset, and the program starts from
DD
pin and CE pin rises simultaneously
PD17072,17073
197
DD
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