UPD750004 datasheet(38/86 Pages) RENESAS

tên linh kiện	UPD750004

Giải thích chi tiết về linh kiện	MOS INTEGRATED CIRCUIT

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µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)

Data Sheet U10738EJ3V2DS

9. RESET FUNCTION

The

µPD750008 is reset with the external reset signal (RESET) or the reset signal received from the basic interval

timer/watchdog timer. When either reset signal is input, the internal reset signal is generated. Fig. 9-1 shows the

configuration of the reset circuit.

Fig. 9-1

Configuration of Reset Functions

When the RESET signal is generated, all hardware is initialized as indicated in Table 9-1. Fig. 9-2 shows the reset

operation timing.

Fig. 9-2

Reset Operation by Generation of RESET Signal

Note Either of the following two values can be selected by a mask option:

217/fX (21.8 ms at 6.0 MHz, 31.3 ms at 4.19 MHz)

215/fX (5.46 ms at 6.0 MHz, 7.81 ms at 4.19 MHz)

WDTM

RESET

Internal reset signal

Reset signal from basic

interval timer/watchdog timer

Internal bus

RESET signal is generated

Operating mode or

standby mode

HALT mode

Operating mode

Internal reset operation

Wait

Note

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