PCF2129AT/2,518 NXP Semiconductors, PCF2129AT/2,518 Datasheet - Page 33

• Manufacturer Part Number: PCF2129AT/2,518
• Description: Real Time Clock
• Manufacturer: NXP Semiconductors
• Series: PCF2129r

Specifications of PCF2129AT/2,518

• Rohs: yes
• Function: Clock, Calendar, Alarm, Watchdog, Timestamp
• Rtc Bus Interface: I2C, SPI
• Date Format: Binary
• Time Format: Binary
• Supply Voltage - Max: 4.2 V
• Supply Voltage - Min: 1.2 V
• Maximum Operating Temperature: + 60 C
• Minimum Operating Temperature: - 15 C
• Mounting Style: SMD/SMT
• Package / Case: SOP-20
• Battery Backup Switching: Yes
• Factory Pack Quantity: 2000

NXP Semiconductors
PCF2129AT
Product data sheet
Table 35.
The following tables show what instruction must be sent to clear the appropriate flag.
Table 36.
[1]
Table 37.
[1]
Register
Control_2
Register
Control_2
Register
Control_2
The bits labeled as - have to be rewritten with the previous values.
The bits labeled as - have to be rewritten with the previous values.
Example values in register Control_2
Example to clear only AF (bit 4)
Example to clear only MSF (bit 7)
All information provided in this document is subject to legal disclaimers.
Bit
7
1
Bit
7
1
Bit
7
0
Rev. 5 — 12 February 2013
6
0
6
0
6
0
5
1
5
1
5
1
4
1
4
0
4
1
Integrated RTC, TCXO and quartz crystal
3
0
3
0
3
0
2
0
2
0
2
0
[1]
[1]
PCF2129AT
© NXP B.V. 2013. All rights reserved.
1
0
1
0
1
0
[1]
[1]
0
0
0
0
0
0
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