參數(shù)資料
型號(hào)： M41T256YMH7TR
廠商： STMICROELECTRONICS
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO44
封裝： 0.330 INCH, PLASTIC, SOH-44
文件頁(yè)數(shù)： 4/30頁(yè)
文件大?。?/td> 271K
代理商： M41T256YMH7TR
Operating modes
M41T256Y
Figure 6.
Bus timing requirements sequence
Table 2.
AC characteristics
READ mode
In this mode the master reads the M41T256Y slave after setting the slave address (see
Figure 7 on page 13). Following the WRITE Mode Control Bit (R/W=0) and the
Acknowledge Bit, the byte addresses A(0) and A(1) are written to the on-chip address
pointer (MSB of address byte A(0) is a “Don’t care”). 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.
The address pointer is only incremented on reception of an Acknowledge Clock. The
M41T256Y slave transmitter will now place the data byte at address An+1 on the bus, the
Symbol
Parameter(1)
1.
Valid for Ambient Operating Temperature: TA = –25 to 70°C; VCC = 4.5 to 5.5V (except where noted).
Min
Max
Unit
fSCL
SCL Clock frequency
0
400
kHz
tBUF
Time the bus must be free before a new transmission can
start
1.3
s
tF
SDA and SCL Fall time
300
ns
tHD:DAT
Data Hold time
0
s
tHD:STA
START Condition hold time
(after this period the first clock pulse is generated)
600
ns
tHIGH
Clock high period
600
ns
tLOW
Clock low period
1.3
s
tR
SDA and SCL Rise time
300
ns
tSU:DAT
(2)
2.
Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling edge of SCL
Data setup time
100
ns
tSU:STA
START Condition setup time
(only relevant for a repeated start condition)
600
ns
tSU:STO
STOP Condition setup time
600
ns
AI00589
SDA
P
tSU:STO
tSU:STA
tHD:STA
SR
SCL
tSU:DAT
tF
tHD:DAT
tR
tHIGH
tLOW
tHD:STA
tBUF
S
P
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M41T256YMT 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:256 Kbit 32K x8 SERIAL RTC
M41T256YMT7 功能描述:實(shí)時(shí)時(shí)鐘 Serial 256K (32Kx8) 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
M41T256YMT7E 功能描述:實(shí)時(shí)時(shí)鐘 Serial 256K (32Kx8) 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
M41T256YMT7F 功能描述:實(shí)時(shí)時(shí)鐘 Serial 256K (32Kx8) 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
M41T256YMT7TR 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:256 Kbit 32K x8 SERIAL RTC
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