PCF2129AT/1,518 NXP Semiconductors, PCF2129AT/1,518 Datasheet - Page 23

• 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
8.8.1 Register Seconds
8.8.2 Register Minutes
8.8 Time and date function
The majority of this registers are coded in the Binary Coded Decimal (BCD) format.
Table 15.
[1]
Table 16.
Table 17.
Bit
7
6 to 4 SECONDS
3 to 0
Seconds value in
decimal
00
01
02
:
09
10
:
58
59
Bit
7
6 to 4 MINUTES
3 to 0
Start-up value.
Symbol
OSF
Symbol
-
Seconds - seconds and clock integrity register (address 03h) bit description
Seconds coded in BCD format
Minutes - minutes register (address 04h) bit description
All information provided in this document is subject to legal disclaimers.
Upper-digit (ten’s place)
Bit 6
0
0
0
:
0
0
:
1
1
Rev. 02 — 7 May 2010
Value
0
1
0 to 5
0 to 9
Value
-
0 to 5
0 to 9
[1]
Bit 5
0
0
0
:
0
0
:
0
0
Place value Description
-
-
ten’s place
unit place
Place value Description
-
ten’s place
unit place
Bit 4
0
0
0
:
0
1
:
1
1
Integrated RTC, TCXO and quartz crystal
Digit (unit place)
Bit 3
0
0
0
:
1
0
:
1
1
clock integrity is guaranteed
clock integrity is not guaranteed:
actual seconds coded in BCD format
unused
actual minutes coded in BCD format
oscillator has stopped and chip reset
has occurred since flag was last cleared
Bit 2
0
0
0
:
0
0
:
0
0
PCF2129A
Bit 1
0
0
1
:
0
0
:
0
0
© NXP B.V. 2010. All rights reserved.
0
1
0
1
0
0
1
Bit 0
:
:
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