PCF2123TS/1,112 NXP Semiconductors, PCF2123TS/1,112 Datasheet - Page 9
![IC SPI RTC/CALENDAR 14-TSSOP](/photos/6/58/65814/568-14-tssop_sot402-1_sml.jpg)
PCF2123TS/1,112
Manufacturer Part Number
PCF2123TS/1,112
Description
IC SPI RTC/CALENDAR 14-TSSOP
Manufacturer
NXP Semiconductors
Type
Clock/Calendar/Alarmr
Specifications of PCF2123TS/1,112
Package / Case
14-TSSOP
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
Function
Clock, Calendar
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.1 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
935286384112
PCF2123TS/1
PCF2123TS/1
PCF2123TS/1
PCF2123TS/1
NXP Semiconductors
PCF2123
Product data sheet
8.3.1 Register Control_1
8.3 Control registers
Table 5.
[1]
[2]
Bit
7
6
5
4
3
2
1
0
Default value.
For a software reset, 01011000 (58h) must be sent to register Control_1 (see
Symbol
EXT_TEST
N
STOP
SR
N
12_24
CIE
N
Control_1 - control and status register 1 (address 00h) bit description
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 22 December 2010
-
0
0
-
0
-
Value
0
1
1
1
1
0
1
[1]
[1]
[1]
[1]
[1]
Description
normal mode
external clock test mode
unused
the RTC source clock runs
the RTC clock is stopped;
no software reset
initiate software reset
unused
24 hour mode is selected
12 hour mode is selected
no correction interrupt generated
interrupt pulses will be generated at every
correction cycle
unused
RTC divider chain flip-flops are
asynchronously set to logic 0;
CLKOUT at 32.768 kHz, 16.384 kHz or
8.192 kHz is still available
this register will always return a 0 when
read
[2]
;
SPI Real time clock/calendar
Section
PCF2123
© NXP B.V. 2010. All rights reserved.
8.3.1.1).
Reference
Section 8.10
-
Section 8.11
Section 8.3.1.1
-
-
Section 8.9
-
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