PCA2125TS/1,112 NXP Semiconductors, PCA2125TS/1,112 Datasheet - Page 25

• Manufacturer Part Number: PCA2125TS/1,112
• Description: IC CMOS RTC/CALENDAR 14-TSSOP
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCA2125TS/1,112

• Package / Case: 14-TSSOP
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Function: Clock, Calendar
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.3 V
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: OM6292 - DEMO BOARD PCA2125 RTC
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935283386112; PCA2125TS/1; PCA2125TS/1

NXP Semiconductors
PCA2125_1
Product data sheet
Fig 19. Serial bus write example
Fig 20. Serial bus read example
address
address
counter
counter
SDO
SCL
SCL
SDI
SDI
CE
CE
R/W
R/W
b7
b7
xx
xx
0
1
b6
b6
0
0
b5
b5
0
In
are not connected together. In this configuration, it is important that pin SDI is never left
floating: it must always be driven either HIGH or LOW. If pin SDI is left open, high I
currents will result.
0
Figure 20
b4
b4
1
1
b3
b3
0
0
addr 02
addr 07
b2
b2
0
1
the Months and Years registers are read. In this example, pins SDI and SDO
b1
b1
HEX
1
HEX
1
b0
b0
0
1
b7
b7
0
0
02
07
Rev. 01 — 28 July 2008
b6
b6
1
0
seconds data 45
months data 11
b5
b5
0
0
b4
b4
0
1
b3
b3
0
0
BCD
BCD
b2
b2
1
0
b1
b1
0
0
b0
b0
1
1
b7
b7
0
0
03
08
b6
b6
0
0
minutes data 10
b5
b5
years data 06
0
0
SPI Real-time clock/calendar
b4
b4
1
0
b3
b3
0
0
BCD
BCD
b2
b2
0
1
PCA2125
© NXP B.V. 2008. All rights reserved.
b1
b1
0
1
001aaf915
001aaf916
b0
b0
0
0
04
09
DD
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