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參數(shù)資料
| 型號： | M41T94MQ6E |
| 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, SOIC-16 |
| 文件頁數(shù)： | 4/41頁 |
| 文件大?。?/td> | 352K |
| 代理商： | M41T94MQ6E |
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Operation
M41T94
3
Operation
The M41T94 clock operates as a slave device on the SPI serial bus. Each memory device is
accessed by a simple serial interface that is SPI bus compatible. The bus signals are SCL,
SDI and SDO (see Table 1 on page 8 and Figure 5 on page 9). The device is selected when
the chip enable input (E) is held low. All instructions, addresses and data are shifted serially
in and out of the chip. The most significant bit is presented first, with the data input (SDI)
sampled on the first rising edge of the clock (SCL) after the chip enable (E) goes low. The 64
bytes contained in the device can then be accessed sequentially in the following order:
●
1st byte: tenths/hundredths of a second register
●
2nd byte: seconds register
●
3rd byte: minutes register
●
4th byte: century/hours register
●
5th byte: day register
●
6th byte: date register
●
7th byte: month register
●
8th byte: year register
●
9th byte: control register
●
10th byte: watchdog register
●
11th - 16th bytes: Alarm registers
●
17th - 19th bytes: reserved
●
20th byte: square wave register
●
21st - 64th bytes: user RAM
The M41T94 clock continually monitors VCC for an out-of tolerance condition. Should VCC
fall below VPFD, the device terminates an access in progress and resets the device address
counter. Inputs to the device will not be recognized at this time to prevent erroneous data
from being written to the device from a an out-of-tolerance system. When VCC falls below
VSO, the device automatically switches over to the battery and powers down into an ultra low
current mode of operation to conserve battery life. As system power returns and VCC rises
above VSO, the battery is disconnected, and the power supply is switched to external VCC.
Write protection continues until VCC reaches VPFD (min) plus tREC (min). For more
information on battery storage life refer to application note AN1012.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T94MQ6F | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 512 (64x8) 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 |
| M41T94MQ6TR | 功能描述:實(shí)時(shí)時(shí)鐘 Advanced Analog 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 |
| M41T94SH | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:512 Bit 64 bit x8 SERIAL RTC SPI SRAM |
| M41TC8025 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal |
| M41TC8025AMC6F | 制造商:STMicroelectronics 功能描述:Real Time Clock Serial 14-Pin SOIC T/R 制造商:STMicroelectronics 功能描述:HIGH-END SENSOR AND ANALOG - Tape and Reel 制造商:STMicroelectronics 功能描述:HIGH-END SENSOR and ANALOG |
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