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參數(shù)資料
| 型號： | M41ST85WMH6TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封裝： | 0.300 INCH, SNAPHAT, PLASTIC, SOH-28 |
| 文件頁數(shù)： | 7/41頁 |
| 文件大?。?/td> | 376K |
| 代理商： | M41ST85WMH6TR |
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M41ST85W
Operating modes
2.2
Read mode
In this mode the master reads the M41ST85W slave after setting the slave address (see
Figure 9). Following the WRITE mode control bit (R/W=0) and the acknowledge bit, the word
address 'An' is written to the on-chip address pointer. Next the START condition and slave
address are repeated followed by the READ mode control bit (R/W=1). At this point the
master transmitter becomes the master receiver.
The data byte which was addressed will be transmitted and the master receiver will send an
acknowledge bit to the slave transmitter (see Figure 10 on page 16). The address pointer is
only incremented on reception of an acknowledge clock. The M41ST85W slave transmitter
will now place the data byte at address An+1 on the bus, the master receiver reads and
acknowledges the new byte and the address pointer is incremented to An+2.
This cycle of reading consecutive addresses will continue until the master receiver sends a
STOP condition to the slave transmitter.
The system-to-user transfer of clock data will be halted whenever the address being read is
a clock address (00h to 07h). The update will resume either due to a stop condition or when
the pointer increments to a non-clock or RAM address.
Note:
This is true both in READ mode and WRITE mode.
An alternate READ mode may also be implemented whereby the master reads the
M41ST85W slave without first writing to the (volatile) address pointer. The first address that
is read is the last one stored in the pointer (see Figure 11 on page 16).
Figure 9.
Slave address location
AI00602
R/W
SLAVE ADDRESS
START
A
0
100
0
11
MSB
LSB
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| M41ST85WMH6E | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| M41ST85WMSX6 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| M41ST85WMX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR |
| M41ST85WMX6 | 功能描述:實時時鐘 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 |
| M41ST85WMX6E | 制造商:STMicroelectronics 功能描述: |
| M41ST85WMX6E2 | 制造商:STME 功能描述: 制造商:STMicroelectronics 功能描述: |
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