pcf2127a NXP Semiconductors, pcf2127a Datasheet - Page 60

• Manufacturer Part Number: pcf2127a
• Description: Integrated Rtc, Tcxo And Quartz Crystal
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF2127A_1
Product data sheet
Fig 45. Bus protocol, reading from RAM
P/S
P/S
S
1
1
1
0
0
0
1
1
1
slave address
data byte 1Ah
slave address
slave address
last data byte
0
0
0
Rev. 01 — 21 January 2010
0
0
0
0
0
0
1
1
1
write bit
write bit
read bit
from PCF2127A
from PCF2127A
from PCF2127A
from PCF2127A
no acknowledge
acknowledge
acknowledge
acknowledge
acknowledge
0
0
1
A
A
A
A
A
P
Integrated RTC, TCXO and quartz crystal
register address 1Ah
register address 1Dh
data byte 1Bh
data byte
data bytes
0 to n
from PCF2127A
from PCF2127A
from PCF2127A
acknowledge
acknowledge
acknowledge
acknowledge
from master
PCF2127A
A
A
A
A
© NXP B.V. 2010. All rights reserved.
set RAM
address
RAM
read command
read data
from RAM
001aaj722
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