PCF2123BS/1,512 NXP Semiconductors, PCF2123BS/1,512 Datasheet - Page 9

• Manufacturer Part Number: PCF2123BS/1,512
• Description: IC CLOCK HVQFN16
• Manufacturer: NXP Semiconductors
• Type: Clock/Calendar/Alarmr

Specifications of PCF2123BS/1,512

• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• 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, Alarm, Watchdog
• 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: SPI
• Supply Current: 250 uA
• 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: 568-5051-5; 935286382512

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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