m41t83 STMicroelectronics, m41t83 Datasheet - Page 19

• Manufacturer Part Number: m41t83
• Description: Serial I 2c Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

2.3
Figure 15. Write mode sequence
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
Write mode
In this mode the master transmitter transmits to the M41T8x slave receiver. Bus protocol is
shown in
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 M41T8x slave receiver will
send an acknowledge clock to the master transmitter after it has received the slave address
see
byte.
Figure 12 on page 17
S
Figure 15.
ADDRESS
SLAVE
Following the START condition and slave address, a logic '0' (R/W = 0)
ADDRESS (An)
and again after it has received the word address and each data
WORD
DATA n
DATA n+1
DATA n+X
AI00591
P
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