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參數(shù)資料
| 型號(hào)： | M41ST87WMX6 |
| 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, PDSO28 |
| 封裝： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOX-28 |
| 文件頁數(shù)： | 4/52頁 |
| 文件大小： | 689K |
| 代理商： | M41ST87WMX6 |
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Operating modes
M41ST87Y, M41ST87W
Doc ID 9497 Rev 8
2
Operating modes
The M41ST87Y/W clock operates as a slave device on the serial bus. Access is obtained by
implementing a start condition followed by the correct slave address (D0h). The 160 bytes
contained in the device can then be accessed sequentially in the following order:
00h.
Tenths/hundredths of a second register
01h.
Seconds register
02h.
Minutes register
03h.
Century/hours register
04h.
Day register
05h.
Date register
06h.
Month register
07h.
Year register
08h.
Control register
09h.
Watchdog register
0Ah-0Eh. Alarm registers
0Fh.
Flag register
10h-12h.
Reserved
13h.
Square wave
14h.
Tamper register 1
15h.
Tamper register 2
16h-1Dh.
Serial number (8 bytes)
1Eh-1Fh.
Reserved (2 bytes)
20h-9Fh.
User RAM (128 bytes)
The M41ST87Y/W 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 device is switched to external
VCC.
Write protection continues until trec (min) elapses after VCC reaches VPFD (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 |
|---|---|
| M41ST87WMX6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87WMX6TR | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 1280 (160x8) 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 |
| M41ST87WSS6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 V and 3.3/3.0 V secure serial RTC and NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM |
| M41ST87WSS6F | 功能描述:實(shí)時(shí)時(shí)鐘 128 NVRAM Serial RTC 3.0 to 3.6 Vcc 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 |
| M41ST87Y | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection |
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