pcf8564a NXP Semiconductors, pcf8564a Datasheet - Page 24

• Manufacturer Part Number: pcf8564a
• Description: Real Time Clock And Calendar
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8564A_1
Product data sheet
Fig 18. Master reads word after setting word address (write word address; READ data)
S
SLAVE ADDRESS
acknowledgement
Fig 19. Master reads slave immediately after first byte (READ mode)
R/W
from slave
0 A
S
WORD ADDRESS
SLAVE ADDRESS
at this moment master transmitter
acknowledgement
Rev. 1 — 8 October 2009
becomes master receiver and
from slave
becomes slave transmitter
acknowledgement
PCF8564A slave receiver
A
R/W
from slave
1 A
S
SLAVE ADDRESS
n bytes
DATA
acknowledgement
acknowledgement
auto increment
word address
R/W
from master
from slave
1
A
A
Real time clock and calendar
n bytes
last byte
DATA
DATA
last byte
DATA
memory word address
no acknowledgement
auto increment
acknowledgement
PCF8564A
memory word address
word address
auto increment
no acknowledgement
from master
from master
auto increment
© NXP B.V. 2009. All rights reserved.
from master
A
1
mgl665
1
013aaa034
P
P
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