PCF2129AT/1,518 NXP Semiconductors, PCF2129AT/1,518 Datasheet - Page 37

• Manufacturer Part Number: PCF2129AT/1,518
• Description: IC RTC /CALENDAR TCXO QTZ 20SOIC
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF2129AT/1,518

• Package / Case: 20-SOIC (7.5mm Width)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, SPI
• Voltage - Supply: 1.8 V ~ 4.2 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Function: Clock/Calendar
• Supply Voltage (max): 4.2 V
• Supply Voltage (min): 1.8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (3-Wire, I2C, SPI)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935288599518

NXP Semiconductors
PCF2129A_2
Product data sheet
8.11.4 Dependency between Battery switch-over and timestamp
The timestamp function depends on the control bit BTSE in register Control_3:
Table 44.
[1]
BTSE BF
0
1
Default value.
-
0
1
Battery switch-over and timestamp
[1]
[1]
All information provided in this document is subject to legal disclaimers.
Description
the battery switch-over does not affect the timestamp registers
If a battery switch-over event occurs:
the timestamp registers store the time and date when the switch-over occurs;
after this event occurred BF is set logic 1
the timestamp registers are not modified;
in this condition subsequent battery switch-over events or falling edges on pin
TS are not registered
Rev. 02 — 7 May 2010
Integrated RTC, TCXO and quartz crystal
PCF2129A
© NXP B.V. 2010. All rights reserved.
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