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M41T80M6 датащи(PDF) 11 Page - STMicroelectronics

номер детали M41T80M6
подробное описание детали  SERIAL ACCESS RTC WITH ALARMS
PDF  20 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T80M6 датащи(HTML) 11 Page - STMicroelectronics

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M41T80
Figure 11. Alternative READ Mode Sequence
WRITE Mode
In this mode the master transmitter transmits to
the M41T80 slave receiver. Bus protocol is shown
in Figure 12, page 11. Following the START con-
dition 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 internal address pointer is incremented to
the next address location on the reception of an
acknowledge clock. The M41T80 slave receiver
will send an acknowledge clock to the master
transmitter after it has received the slave address
see Figure 9, page 10 and again after it has re-
ceived the word address and each data byte.
Figure 12. WRITE Mode Sequence
AI00895
BUS ACTIVITY:
S
P
SDA LINE
BUS ACTIVITY:
MASTER
DATA n
DATA n+1
DATA n+X
SLAVE
ADDRESS
AI00591
BUS ACTIVITY:
S
P
SDA LINE
BUS ACTIVITY:
MASTER
DATA n
DATA n+1
DATA n+X
WORD
ADDRESS (An)
SLAVE
ADDRESS



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