PCF2123BS/1,518 NXP Semiconductors, PCF2123BS/1,518 Datasheet - Page 11

• Manufacturer Part Number: PCF2123BS/1,518
• Description: IC RTC/CALENDAR SPI BUS 16HVQFN
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF2123BS/1,518

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.1 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 935286382518

NXP Semiconductors
PCF2123
Product data sheet
Table 6.
Bits labeled as - are not implemented. Bits labeled as X are undefined at power-on and unchanged
by subsequent resets.
Address Register name
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
Control_1
Control_2
Seconds
Minutes
Hours
Days
Weekdays
Months
Years
Minute_alarm
Hour_alarm
Day_alarm
Weekday_alarm
Offset_register
Timer_clkout
Countdown_timer
Register reset values
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 22 December 2010
0
0
1
1
1
0
-
X
Bit
7
1
-
-
-
-
-
X
1
6
0
0
X
X
-
-
-
-
X
X
-
-
-
0
0
X
5
0
0
X
X
X
X
-
-
X
X
X
X
-
0
0
X
4
0
0
X
X
X
X
-
X
X
X
X
X
-
0
0
X
SPI Real time clock/calendar
3
0
0
X
X
X
X
-
X
X
X
X
X
-
0
0
X
2
0
0
X
X
X
X
X
X
X
X
X
X
X
0
-
X
PCF2123
© NXP B.V. 2010. All rights reserved.
1
0
0
X
X
X
X
X
X
X
X
X
X
X
0
1
X
0
0
0
X
X
X
X
X
X
X
X
X
X
X
0
1
X
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