PCF2123TS/1.118 NXP Semiconductors, PCF2123TS/1.118 Datasheet - Page 9
PCF2123TS/1.118
Manufacturer Part Number
PCF2123TS/1.118
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PCF2123TS1.118.pdf
(61 pages)
Specifications of PCF2123TS/1.118
Bus Type
Serial (3-Wire, SPI)
Package Type
TSSOP
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Industrial
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Date Format
DW:DM:M:Y
Time Format
HH:MM:SS
Lead Free Status / RoHS Status
Compliant
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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. 03 — 5 October 2010
0
Value
0
1
-
0
1
0
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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