PCF2129AT NXP [NXP Semiconductors], PCF2129AT Datasheet - Page 3

• Manufacturer Part Number: PCF2129AT
• Description: Integrated RTC, TCXO and quartz crystal
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
6. Block diagram
PCF2129A_1
Product data sheet
Fig 1.
CLKOUT
SDA/CE
V
SDO
BBS
V
SCL
V
SDI
BAT
IFS
DD
TS
SS
Block diagram of PCF2129A
BATTERY BACK UP
SWITCH-OVER
OSCILLATOR
SERIAL BUS
INTERFACE
INTERFACE
INTERFACE
CIRCUITRY
SELECTOR
MONITOR
SPI-BUS
I
2
C-BUS
TEMP
32.768 kHz
OSCO
OSCI
Rev. 01 — 13 January 2010
TEMPERATURE
internal
power
supply
RESET
SENSOR
PCF2129A
TCXO
TEMP
R PU
Integrated RTC, TCXO and quartz crystal
REGISTER
CONTROL
ADDRESS
DIVIDER
LOGIC
TIMER
AND
1 Hz
INT
Weekday_alarm
Second_alarm
Minute_alarm
Hour_timestp
Year_timestp
Watchdg_val
Mon_timestp
CLKOUT_ctl
Day_timestp
Aging_offset
Watchdg_ctl
Sec_timestp
Min_timestp
Hour_alarm
Internal_reg
Internal_reg
Timestp_ctl
Day_alarm
Weekdays
Control_1
Control_2
Control_3
Seconds
Minutes
Months
PCF2129A
Hours
Years
Days
© NXP B.V. 2010. All rights reserved.
001aaj703
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
1Bh
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