HD404374 Datasheet, PDF (50/161 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip A/D Converter

HD404374/HD404384/HD404389/HD404082/HD404084 Series
Active mode
Watch mode
Oscillation
stabilization
period
Active mode
Interrupt
strobe
0,
0
Interrupt
request generation
Only in case of
transition to active
mode
T
T
tRC
TX
T: Interrupt frame period
tRC : Oscillation stabilization period
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
3
2
1
0
Read/Write W
W
W
W
Reset
Bit name
0
0
0
MIS3 Not used*⁴ MIS1*¹
0
MIS0*¹
See pull-up
MOS control,
figure 30
MIS1
Interrupt Frame Oscillation Settling
MIS0 _{period T(ms)*2 Time tRC(ms)*2}
Oscillator Circuit
Condition
0
0.24414
0.12207(0.24414)*³ External clock input, CR oscillation frequency
0
1
3.90625
7.8125
Ceramic resonator
1
0
3.90625
31.25
1
Not used
Crystal resonator
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.
Figure 15 Miscellaneous Register (MIS)
Rev.5.00, Sep.11.2003, page 50 of 161