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參數(shù)資料
| 型號： | M41T83RM6E |
| 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, PDSO8 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 27/61頁 |
| 文件大小： | 983K |
| 代理商： | M41T83RM6E |
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M41T82-M41T83
Clock operation
Doc ID 12578 Rev 12
Figure 20.
Crystal isolation example
1.
Substrate pad should be tied to VSS.
3.5
Setting the alarm clock registers
Codes not listed in the table default to the once-per-second mode to quickly alert the user of
an incorrect alarm setting. When the clock information matches the alarm clock settings
based on the match criteria defined by RPTx5–RPTx1 (x = 1 for alarm 1 or 2 for alarm 2),
the alarm flag, AFx, is set. Reading the flags register clears the alarm flags. A subsequent
read of the flags register is necessary to see that the value of the alarm flag has been reset
to 0.
M41T83 interrupts on alarm
In the M41T83, for alarm 1, setting the alarm interrupt enable, A1IE, allows an interrupt
output to be asserted upon AF1 being set provided that other configuration bits are set
accordingly (see Section 3.14 for more information on the IRQ/FT/OUT output).
Likewise for alarm 2, with A2IE set, IRQ2 will be asserted upon AF2 going high. To disable
either of the alarms, write a 0 to the alarm date registers and to the RPTx5–RPTx1 bits.
Note:
If the address pointer is allowed to increment to the flag register address, or the last address
written is “Alarm Seconds,” the address pointer will increment to the flag address, and an
alarm condition will not cause the interrupt/flag to occur until the address pointer is moved to
a different address.
Alarm IRQ outputs are de-asserted when the alarm flags are cleared by reading the flags
register (0Fh).
The IRQ1/FT/OUT pin can also be activated in the battery backup mode. This requires the
ABE bit (alarm in backup enable) to be set (see Section 3.14.2: Backup mode for additional
conditions which apply). Once an interrupt is asserted in backup mode, it will remain true
until VCC is restored and a subsequent read of the flags register occurs.
AI11814
Crystal
XI XO
VSS
Local Grounding
Plane (Layer 2)
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| M41T83SQA6E | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
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| M41T83RQA6F | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T83SMY6F | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| M41T93ZMY6F | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T83RM6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T83RMY6E | 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T83RMY6F | 功能描述:實(shí)時(shí)時(shí)鐘 Serial I2C bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T83RQ6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T83RQ6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
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