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参数资料
| 型号： | M41T93RMY6E |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-18 |
| 文件页数： | 4/49页 |
| 文件大小： | 719K |
| 代理商： | M41T93RMY6E |
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Operation
M41T93
Doc ID 12615 Rev 5
2
Operation
The M41T93 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 7 and Figure 5 on page 10). 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 32 bytes contained in the device can then be accessed sequentially in the following
order:
The M41T93 clock continually monitors VCC for an out-of tolerance condition. Should VCC
fall below VRST, 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.
The power input will also be switched from the VCC pin to the external battery when VCC falls
below the battery back-up switchover voltage (VSO = VRST). At this time the clock registers
will be maintained by the battery supply. 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.
1
Tenths/hundredths of a second register
2
Seconds register
3
Minutes register
4
Century/hours register
5
Day register
6
Date register
7
Month register
8
Year register
9
Digital calibration register
10
Watchdog register
11-15
Alarm1 registers
16
Flags register
17
Timer value register
18
Timer control register
19
Analog calibration register
20
Square wave register
21-25
Alarm2 registers
26-32
User RAM
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M41T93RMY6F | 功能描述:实时时钟 Serial SPI bus RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41T93RMY6F-CUT TAPE | 制造商:ST 功能描述:M41T93 Series 5.5 V Serial SPI Bus RTC with Battery Switchover - SOX-18 |
| M41T93RQA6E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:Serial SPI bus RTC with battery switchover |
| M41T93RQA6F | 功能描述:实时时钟 SPI RTC 32.768 kHz 365nA 2.0V to 5.5V RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| M41T93RQA6F-CUT TAPE | 制造商:ST 功能描述:M41T93 Series 5.5 V Serial SPI Bus RTC With Battery Switchover -QFN-16 |
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