HD404374FT datasheet(50/161 Pages) RENESAS

50 / 161 page

HD404374/HD404384/HD404389/HD404082/HD404084 Series

Rev.5.00, Sep.11.2003, page 50 of 161

Watch mode

Oscillation

stabilization

period

Active mode

Interrupt

strobe

Interrupt

request generation

tRC

T: Interrupt frame period

tRC : Oscillation stabilization period

Only in case of

transition to active

mode

Note: If the time from the fall of the

0 or

0 signal until the interrupt is accepted and

active mode is entered and is designated TX, then TX will be in the following range :

T+tRC TX 2T+tRC (MIS1, MIS0=00)

tRC TX T+tRC (MIS1, MIS0=01 or 10)

Figure 14 Interrupt Frame

Miscellaneous Register (MIS: $005)

Bit

Read/Write

Reset

Bit name

MIS3

Not used*4

MIS1*1

MIS0*1

Interrupt Frame

period T(ms)*2

Oscillation Settling

Time tRC(ms)*2

MIS1

MIS0

0.24414

3.90625

0.12207(0.24414)*3

7.8125

31.25

Oscillator Circuit

Condition

External clock input, CR oscillation frequency

Ceramic resonator

Crystal resonator

Not used

Notes: *1. Applies to HD404374 series.

*2. T and tRC values are for use of a 32.768 kHz crystal oscillator at the X1-X2 pins.

*3. This value applies only in case of direct transition operation.

*4. Must always be cleared to 0. Setting to 1 will cause incorrect operation.

See pull-up

MOS control,

figure 30

Figure 15 Miscellaneous Register (MIS)

HD404374FT Datasheet(PDF) 50 Page - Renesas Technology Corp

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