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參數(shù)資料
| 型號(hào)： | M41T00M |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Serial Access TIMEKEEPER |
| 中文描述： | 串行訪問(wèn)計(jì)時(shí) |
| 文件頁(yè)數(shù)： | 7/15頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | M41T00M |
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7/15
M41T00
Table 10. AC Characteristics
(T
A
= –40 to 85°C; V
CC
= 2.0V to 5.5V)
Symbol
Note: 1. Transmitter must internally provide a hold time to bridge the undefined region (300ns max.) of the falling edge of SCL.
Parameter
Min
Max
Unit
f
SCL
SCL Clock Frequency
0
100
kHz
t
LOW
Clock Low Period
4.7
μs
t
HIGH
Clock High Period
4
μs
t
R
SDA and SCL Rise Time
1
μs
t
F
SDA and SCL Fall Time
300
ns
t
HD:STA
START Condition Hold Time
(after this period the first clock pulse is generated)
4
μs
t
SU:STA
START Condition Setup Time
(only relevant for a repeated start condition)
4.7
μs
t
SU:DAT
Data Setup Time
250
ns
t
HD:DAT
(1)
Data Hold Time
0
μs
t
SU:STO
STOP Condition Setup Time
4.7
μs
t
BUF
Time the bus must be free before a new transmission can start
4.7
μs
WRITE MODE
In this mode the master transmitter transmits to
the M41T00 slave receiver. Bus protocol is shown
in Figure 10. Following the START condition and
slave address, a logic ’0’ (R/W = 0) is placed on the
bus and indicates to the addressed 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 in-
ternal address pointer is incremented to the next
memory location within the RAM on the reception
of an acknowledge clock. The M41T00 slave re-
ceiver will send an acknowledge clock to the mas-
ter transmitter after it has received the slave
address and again after it has received the word
address and each data byte (see Figure 9).
READ MODE
In this mode, the master reads the M41T00 slave
after setting the slave address (see Figure 11).
Following the write mode control bit (R/W = 0) and
the acknowledge bit, the word address An is writ-
ten 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 ad-
dressed will be transmitted and the master receiv-
er will send an acknowledge bit to the slave
transmitter. The address pointer is only increment-
ed on reception of an acknowledge bit. The
M41T00 slave transmitter will now place the data
byte at address A
n+1
on the bus. The master re-
ceiver reads and acknowledges the new byte and
the address pointer is incremented to A
n+2
.
This cycle of reading consecutive addresses will
continue until the master receiver sends a STOP
condition to the slave transmitter.
An alternate READ mode may also be implement-
ed, whereby the master reads the M41T00 slave
without first writing to the (volatile) address point-
er. The first address that is read is the last one
stored in the pointer, see Figure12.
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| M41T00M6 | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8X8) 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 |
| M41T00M6E | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8X8) 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 |
| M41T00M6F | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8X8) 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 |
| M41T00M6F-CUT TAPE | 制造商:ST 功能描述:M41T00 Series 2 - 5.5 V 32 kHz Serial I2C Real Time Clock - SOIC-8 |
| M41T00S | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:Serial access real-time clock |
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