M41T00AUDD1F(2007) データシートの表示（PDF） - STMicroelectronics
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M41T00AUDD1F Datasheet PDF : 44 Pages
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M41T00AUD
M41T00AUD clock operation
Table 4. M41T00AUD register map(1)
Bit
Register name Range
Addr D7
D6
D5
D4
D3
D2
D1
D0
00h
ST
01h
0(2)
10 seconds
10 minutes
02h CEB
CB
03h
0
Y(3)
10 hours
Y
Y
04h
0
0
10 date
05h
0
0
0
10M
Seconds
Minutes
Hours (24 hour format)
0
Day of week
Date: day of month
Month
Seconds
00-59
Minutes
00-59
Century/hours 0-1/00-23
Day
1-7
Date
01-31
Month
01-12
06h
10 years
Year
07h OUT
FT
S
<------------- Calibration ------------>
08h 256/512 TONE TCH2 MUTE
<--------------GAIN ------------>
09h
HT TCFE OF OFIE TCHE3 TCHE2 TCHE1 TCHE0
Year
Cal/control
Audio
Control2
00-99
1. Key:
S = SIGN bit
FT = Frequency Test bit'
ST = STOP bit
OF = Oscillator Fail Detect Flag
OFIE = Oscillator Fail Interrupt Enable
OUT = Logic Output
TCHE3:TCHEO = Trickle Charge Enable bits
TCFE = Trickle Charge FET bypass Enable
HT = Halt bit
TCH2 = Trickle Charge Enable #2
TONE = Tone on/off select
CB = Century bit
CEB = Century Enable bit
256/512 = Tone frequency select bit
2. 0 bits always read as 0. Writing them has no effect.
3. Y bits are indeterminate at power-up. These are the factory test mode bits, and must be written to 0.
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