參數(shù)資料
型號(hào): M41ST84WMQ6F
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, PDSO16
封裝: ROHS COMPLIANT, PLASTIC, SOP-16
文件頁數(shù): 13/34頁
文件大?。?/td> 298K
代理商: M41ST84WMQ6F
Clock operation
M41ST84W
Figure 12.
Crystal accuracy across temperature
Figure 13.
Clock calibration
3.4
Setting alarm clock registers
Address locations 0Ah-0Eh contain the alarm settings. The alarm can be configured to go
off at a prescribed time on a specific month, date, hour, minute, or second, or repeat every
year, month, day, hour, minute, or second. It can also be programmed to go off while the
M41ST84W is in the battery backup to serve as a system wakeup call.
Bits RPT5-RPT1 put the alarm in the repeat mode of operation. Table 4 shows the possible
configurations. Codes not listed in the table default to the once per second mode to quickly
alert the user of an incorrect alarm setting.
AI00999b
–160
0
10203040506070
Frequency (ppm)
Temperature
°C
80
–10
–20
–30
–40
–100
–120
–140
–40
–60
–80
20
0
–20
= K x (T –TO)
2
K = –0.036 ppm/
°C2 ± 0.006 ppm/°C2
TO = 25°C ± 5°C
F
AI00594B
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
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