參數(shù)資料
型號(hào)： M41T81SM6E
廠商： 意法半導(dǎo)體
英文描述： Serial Access Real-Time Clock with Alarms
中文描述： 串行訪問實(shí)時(shí)時(shí)鐘與鬧鐘
文件頁(yè)數(shù)： 10/29頁(yè)
文件大?。?/td> 438K
代理商： M41T81SM6E
M41T81S
10/29
WRITE Mode
In this mode the master transmitter transmits to
the M41T81S slave receiver. Bus protocol is
shown in
Figure 11., page 10
. Following the
START condition and slave address, a logic '0' (R/
W=0) is placed on the bus and indicates to the ad-
dressed device that word address “An” will follow
and is to be written to the on-chip address pointer.
The data word to be written to the memory is
strobed in next and the internal address pointer is
incremented to the next address location on the
reception of an acknowledge clock. The M41T81S
slave receiver will send an acknowledge clock to
the master transmitter after it has received the
slave address see
Figure 8., page 8
and again af-
ter it has received the word address and each data
byte.
Data Retention Mode
With valid V
CC
applied, the M41T81S can be ac-
cessed as described above with READ or WRITE
Cycles. Should the supply voltage decay, the pow-
er input will be switched from the V
CC
pin to the
battery when V
CC
falls below the Battery Back-up
Switchover Voltage (V
SO
). At this time the clock
registers will be maintained by the attached bat-
tery supply. On power-up, when V
CC
returns to a
nominal value, write protection continues for t
REC
.
For a further, more detailed review of lifetime cal-
culations, please see Application Note AN1012.
Figure 11. WRITE Mode Sequence
AI00591
BUS ACTIVITY:
A
S
A
A
A
A
S
S
P
SDA LINE
BUS ACTIVITY:
MASTER
R
DATA n
DATA n+1
DATA n+X
WORD
ADDRESS (An)
SLAVE
ADDRESS
相關(guān)PDF資料
PDF描述
M41T81SM6FT Serial Access Real-Time Clock with Alarms
M41T81SMY6E Serial Access Real-Time Clock with Alarms
M41T81SMY6F Serial Access Real-Time Clock with Alarms
M440T1MV-15ZA9 3.3V, 32 Mbit (1024 Kbit x 32) TIMEKEEPER SRAM
M440T1MV 3.3V, 32 Mbit (1024 Kbit x 32) TIMEKEEPER SRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M41T81SM6ET 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Real-Time Clock with Alarms
M41T81SM6F 功能描述:實(shí)時(shí)時(shí)鐘 2.0-5.5V 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(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
M41T81SM6FT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Real-Time Clock with Alarms
M41T81SMY6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Real-Time Clock with Alarms
M41T81SMY6E 功能描述:實(shí)時(shí)時(shí)鐘 Serial Access 實(shí)時(shí)時(shí)鐘 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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