參數(shù)資料
型號(hào)： M41T93ZMY6F
廠商： STMICROELECTRONICS
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO18
封裝： 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-18
文件頁數(shù)： 20/49頁
文件大?。?/td> 719K
代理商： M41T93ZMY6F
M41T93
Clock operation
Doc ID 12615 Rev 5
3.6
Optional second programmable alarm
When the alarm 2 enable (AL2E) bit (D1 of address 13h) is set to a logic ‘1,’ registers 14h
through 18h provide control for a second programmable alarm which operates in the same
manner as the alarm function described above.
The AL2E bit defaults on initial power-up to a logic ‘0’ (alarm 2 disabled). In this mode, the
five address bytes (14h-18h) function as additional user SRAM, for a total of 12 bytes of
user SRAM.
Figure 14.
Alarm interrupt reset waveform
Figure 15.
Backup mode alarm waveform
Note:
ABE and A1IE bits = 1.
ALARM FLAG BITS (AFx)
0Fh
0Eh
00h
HIGH-Z
AI11823
IRQ/FT/OUT
VCC
IRQ/FT/OUT
AFx Bits in Flags
Register
HIGH-Z
VSO
VPFD
trec
AI11824
Table 6.
Alarm repeat modes
RPT5
RPT4
RPT3
RPT2
RPT1
Alarm setting
11111
Once per second
11110
Once per minute
11100
Once per hour
11000
Once per day
10000
Once per month
00000
Once per year
相關(guān)PDF資料
PDF描述
M41T93ZQA6F 1 TIMER(S), REAL TIME CLOCK, PQCC16
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