HD404324UFS View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

HD404324UFS

4-bit HMCS400-series microcomputer

Renesas Electronics 

Active mode

Watch mode

HD404328 Series

Oscillation

stabilization period

Active mode

Interrupt strobe

INT0

Interrupt request

generation

(During the transition

T

from watch mode to

active mode only)

T: Interrupt frame length

tRC : Oscillation stabilization period

T

tRC

TX

Figure 13 Interrupt Frame

Miscellaneous register (MIS): $00C

3

2

1

0

Initial value: 0000,

R/W: W

tRC selection

R12/SO PMOS off

Setting for switching

the system oscillator’s

frequency

MIS

T *1

Bit 1 Bit 0

t RC* 1

0.12207 ms

0 0 0.24414 ms

0.24414 *2 ms

0 1 15.625 ms 7.8125 ms

1 0 125 ms

62.5 ms

11

Not used

T: Interrupt frame length

tRC: Oscillation stabilization period

Notes: 1. The value of tRC applies only when

using a 32.768-kHz crystal oscillator.

2. Only direct transfer.

Figure 14 Miscellaneous Register

31

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