PCF2127AT/1,518 NXP Semiconductors, PCF2127AT/1,518 Datasheet - Page 43

• Manufacturer Part Number: PCF2127AT/1,518
• Description: IC RTC/CALENDAR TCXO QTZ 20SOIC
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF2127AT/1,518

• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Time Format: HH:MM:SS (12/24 hr)
• Memory Size: 512B
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 4.2 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Function: Serial Clock, Timestamp, Timekeeper, Watchdog, Alarm, Calendar, Timer, Timer Interrupt
• Rtc Memory Size: 512 bytes
• Supply Voltage (max): 4.2 V
• Supply Voltage (min): 1.8 V
• Mounting Style: SMD/SMT
• Rtc Bus Interface: I2C
• Supply Current: 2600 nA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
PCF2127A_2
Product data sheet
8.12.3.4 Register Hour_timestp
8.12.3.5 Register Day_timestp
8.12.3.6 Register Mon_timestp
8.12.3.7 Register Year_timestp
Table 48.
[1]
Table 49.
Table 50.
Table 51.
Bit
7 to 6 -
12 hour mode
5
4
3 to 0
24 hour mode
5 to 4 HOUR_TIMESTP
3 to 0
Bit
7 to 6 -
5 to 4 DAY_TIMESTP
3 to 0
Bit
7 to 5 -
4
3 to 0
Bit
7 to 4 YEAR_TIMESTP
3 to 0
Hour mode is set by the bit 12_24 in register Control_1.
Symbol
AMPM
HOUR_TIMESTP
Symbol
Symbol
MONTH_TIMESTP
Symbol
Hour_timestp - hour timestamp register (address 15h) bit description
Day_timestp - day timestamp register (address 16h) bit description
Mon_timestp - month timestamp register (address 17h) bit description
Year_timestp - year timestamp register (address 18h) bit description
[1]
[1]
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 7 May 2010
Value
-
0
1
0 to 1
0 to 9
0 to 2
0 to 9
Value
-
0 to 3
0 to 9
Value
-
0 to 1
0 to 9
Value
0 to 9
0 to 9
Place value Description
-
-
-
ten’s place
unit place
ten’s place
unit place
Place value Description
-
ten’s place
unit place
Place value Description
-
ten’s place
unit place
Place value Description
ten’s place
unit place
Integrated RTC, TCXO and quartz crystal
unused
indicates AM
indicates PM
hour timestamp information coded in BCD
format when in 12 hour mode
hour timestamp information coded in BCD
format when in 24 hour mode
unused
day timestamp information coded in BCD
format
unused
month timestamp information coded in
BCD format
year timestamp information coded in BCD
format
PCF2127A
© NXP B.V. 2010. All rights reserved.
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