UPD753012 datasheet(39/80 Pages) NEC

номер детали	UPD753012

подробное описание детали	4-BIT SINGLE-CHIP MICROCONTROLLER

PDF	80 Pages

Scroll/Zoom	100%

производитель	NEC [NEC]

домашняя страница	http://www.nec.com/

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39 / 80 page

µPD753012, 753016, 753017

9. RESET FUNCTION

There are two reset inputs: external reset signal (RESET) and reset signal sent from the basic interval timer/

watchdog timer. When either one of the reset signals are input, an internal reset signal is generated. Figure 9-

1 shows the circuit diagram of the above two inputs.

Figure 9-1. Configuration of Reset Function

RESET

Internal reset signal

Reset signal sent from the basic

interval timer/watchdog timer

WDTM

Internal bus

The

µPD753017 is set by the RESET signal generated and each device is initialized as listed in Table 9-1.

Figure 9-2 shows the timing chart of the reset operation.

Figure 9-2. Reset Operation by RESET Signal Generation

Operation mode or

standby mode

Wait Note

RESET

signal

generated

Operation mode

HALT mode

Internal reset operation

Note

The following two times can be selected by the mask option.

217/fX (21.8 ms : at 6.00 MHz operation, 31.3 ms : at 4.19 MHz operation)

215/fX (5.46 ms : at 6.00 MHz operation, 7.81 ms : at 4.19 MHz operation)

UPD753012 датащи(PDF) 39 Page - NEC