NEC MuPD754144 Datasheet page 33

Mos integrated circuit, 4-bit single-chip microcontrollers

Table of Contents

Each hardware is initialized by the RESET signal generation as listed in Table 10-1. Figure 10-2 shows the

timing chart of the reset operation.

Figure 10-2. Reset Operation by RESET Signal Generation

RESET

signal

generated

Operation mode or

In the µ PD754144, the wait time is fixed to 56/fcc (56 µ s: @ 1.0-MHz operation).

Note

In the µ PD754244, the wait time can be selected from the following two time settings by means of

the mask option.

/fx (21.8 ms : @ 6.0-MHz operation, 31.3 ms: @ 4.19-MHz operation)

/fx (5.46 ms : @ 6.0-MHz operation, 7.81 ms: @ 4.19-MHz operation)

standby mode

Data Sheet U10040EJ2V1DS

µ PD754144, 754244

Note

Wait

HALT mode

Operation mode

Internal reset operation

Table of Contents

Mu754244