pcf2127a NXP Semiconductors, pcf2127a Datasheet - Page 59

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

NXP Semiconductors
PCF2127A_1
Product data sheet
Fig 44. Bus protocol, writing to RAM
P/S
S
1
1
0
0
data byte (RAM address)
1
1
slave address
data byte 1Ah
slave address
data bytes
0
0
0 to n
Rev. 01 — 21 January 2010
0
0
0
0
1
1
write bit
write bit
from PCF2127A
from PCF2127A
from PCF2127A
from PCF2127A
acknowledge
acknowledge
acknowledge
acknowledge
0
0
A
A
A
A
P
Integrated RTC, TCXO and quartz crystal
register address 1Ah
register address 1Ch
data byte 1Bh
from PCF2127A
from PCF2127A
from PCF2127A
acknowledge
acknowledge
acknowledge
PCF2127A
A
A
A
© NXP B.V. 2010. All rights reserved.
set RAM
address
RAM write
command
write data
to RAM
001aaj720
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