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PCF2128 Datasheet(PDF) 3 Page - NXP Semiconductors

Part No. PCF2128
Description  Integrated RTC / TCXO / Crystal
Download  10 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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PCF2128 Datasheet(HTML) 3 Page - NXP Semiconductors

 
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PCF2128_SDS_0
© NXP B.V. 2007. All rights reserved.
Preliminary [short] data sheet
Rev. 00.03 — 4 June 2007
3 of 10
NXP Semiconductors
PCF2128
Real time clock / calendar
5.
Block diagram
Fig 1.
Block diagram of PCF2128
001aag059_02
TEST
PFO
SCL
SCL
SCL
SDO
TEMP
1.25 V
(internal)
SDI
VDD
VOUT
VBAT
VSS
20
18
internal
power
supply
19
8
RST
16
1
SDI
2
SDO
3
4
CLKOUT
7
INT
17
OSCI
OSCO
TEMP
1 Hz
32.768 kHz
TCXO
BATTERY BACK UP
SWITCH-OVER
CIRCUITRY
OSCILLATOR
MONITOR
SERIAL BUS
INTERFACE
INTERFACE
SELECTORS
I2C BUS
INTERFACE
512 BYTES
STATIC RAM
TEMPERATURE
SENSOR
RESET
LOGIC
CONTROL
DIVIDER
AND
TIMER
ADDRESS
REGISTER
CONTROL 1
CONTROL 2
CONTROL 3
00
01
02
SECONDS
03
MINUTES
04
HOURS
05
DAYS
06
WEEKDAYS
07
MONTHS
08
YEARS
09
SECOND ALARM
0A
MINUTE ALARM
0B
HOUR ALARM
0C
DAY ALARM
0D
WEEKDAY ALARM
0E
CLOCKOUT CONTROL
0F
TIMER CONTROL
10
COUNTDOWN TIMER
11
SECOND TIMESTAMP
12
MINUTE TIMESTAMP
13
HOUR TIMESTAMP
14
DAY TIMESTAMP
15
MONTH TIMESTAMP
16
YEAR TIMESTAMP
17
CRYSTAL AGING OFFSET
18
RAM ADDRESS MSB
19
RAM ADDRESS LSB
1A
RAM WRITE
1B
RAM READ
1C
SDA/CE
SDA/CE
5
IFS
15
14
13
PFI
6
TS
SDA/CE
1/16 SECOND TIMESTAMP
1D


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