pcf2127a NXP Semiconductors, pcf2127a Datasheet - Page 60
![no-image](/images/manufacturer_photos/0/4/487/nxp_semiconductors_sml.jpg)
pcf2127a
Manufacturer Part Number
pcf2127a
Description
Integrated Rtc, Tcxo And Quartz Crystal
Manufacturer
NXP Semiconductors
Datasheet
1.PCF2127A.pdf
(79 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
pcf2127aT
Manufacturer:
NICCOMP
Quantity:
420 000
Part Number:
pcf2127aT
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
pcf2127aT/2
Manufacturer:
NXP
Quantity:
441
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
60 of 79