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UPD17708 Datasheet(PDF) 318 Page - Renesas Technology Corp

Part # UPD17708
Description  MOS INTEGRATED CIRCUIT
PDF  358 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD17708 Datasheet(HTML) 318 Page - Renesas Technology Corp

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µPD17704, 17705, 17707, 17708, 17709
21.4 Relationship between CE Reset and Power-ON Reset
On the first application of supply voltage VDD, power-ON reset and CE reset are performed at the same time.
The reset operations at this time are described in 21.4.1 through 21.4.3.
21.4.4 describes the points to be noted when raising supply voltage VDD.
21.4.1 If VDD pin and CE pin go high at the same time
Figure 21-7 (a) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset.
21.4.2 If CE pin rises in forced halt status set by power-ON reset
Figure 21-7 (b) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset, in the same manner as 21.4.1.
21.4.3 If CE pin rises after power-ON reset
Figure 21-7 (c) shows the operation.
At this time, the program starts from address 0000H because of power-ON reset, and the program starts from
address 0000H again at the rising edge of the next basic timer 0 carry FF setting signal because of CE reset.



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