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參數(shù)資料
| 型號(hào)： | M41T00AUDD1E |
| 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： | REAL TIME CLOCK, DSO16 |
| 封裝： | 5 X 4 MM, ROHS COMPLIANT, DFN-16 |
| 文件頁數(shù)： | 14/42頁 |
| 文件大?。?/td> | 333K |
| 代理商： | M41T00AUDD1E |
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M41T00AUD
M41T00AUD clock operation
5.3
Priority for IRQ/FT/OUT pin
Three functions share pin 5 of the M41T00AUD. The oscillator fail interrupt (IRQ), the
calibration frequency test output (FT) and the discrete logic output (OUT) all use this pin.
In normal operation, when operating from VCC, the interrupt function has priority over the
frequency test function which in turn has priority over the discrete output function.
In the backup mode, when operating from VBACK, the priorities are different. The interrupt
and frequency test functions are disabled, and only the discrete output function can be
used.
When operating from VCC, if the oscillator fail interrupt enable bit is set (OFIE, D4 of register
09h), the pin is an interrupt output which will be asserted anytime the OF bit (D5 of register
09h) goes true. (See Section 5 for more details.)
During calibration, the pin can be used as a frequency test output. When FT is a 1 (and
OFIE a 0), the device will output a 512 Hz test signal on this pin. Users can measure this
with a frequency counter and use that result to determine the appropriate calibration register
value.
Otherwise, when OFIE is a 0 and FT is a 0, it becomes the discrete logic OUT pin and
reflects the value of the OUT bit (D7 of register 07h).
When operating from VBACK, the discrete output function can still be used. The
IRQ/FT/OUT pin will reflect the contents of the out bit.
Note:
The IRQ/FT/OUT pin is open drain and requires an external pull-up resistor.
Table 5.
Priority for IRQ/FT/OUT pin
State
Register bits
IRQ/FT/OUT pin
OFIE
FT
OUT
On VCC
1X
X
OF
0
1
X
512 Hertz
00
1
00
0
On VBACK
XX
1
XX
0
相關(guān)PDF資料 |
PDF描述 |
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| M43E-12-52 | PLCC52, IC SOCKET |
| M43E-10-100 | PLCC100, IC SOCKET |
| M43E-12-68 | PLCC68, IC SOCKET |
| M43E-14-28 | PLCC28, IC SOCKET |
| M43E-14-44 | PLCC44, IC SOCKET |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T00AUDD1F | 功能描述:實(shí)時(shí)時(shí)鐘 SERIAL RTC W/AUDIO 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 |
| M41T00CAP | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access real-time clock (RTC) with integral backup battery and crystal |
| M41T00CAPPC1 | 制造商:STMicroelectronics 功能描述:REAL TIME CLOCK SERL 8BYTE 16DFN - Bulk 制造商:STMicroelectronics 功能描述:IC RTC SERIAL W/AUDIO 24PDIP |
| M41T00M | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access TIMEKEEPER |
| M41T00M6 | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8X8) 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 |
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