PCF2123BS/1,518 NXP Semiconductors, PCF2123BS/1,518 Datasheet - Page 39
PCF2123BS/1,518
Manufacturer Part Number
PCF2123BS/1,518
Description
IC RTC/CALENDAR SPI BUS 16HVQFN
Manufacturer
NXP Semiconductors
Type
Clock/Calendar/Alarmr
Datasheet
1.PCF2123TS1118.pdf
(61 pages)
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
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NXP Semiconductors
9. Internal circuitry
PCF2123
Product data sheet
The watchdog is implemented to prevent the excessive loss of time due to interface
access failure e.g. if main power is removed from a battery backed-up system during an
interface access.
Each time the watchdog period is exceeded, 1 s will be lost from the time counters. The
watchdog will trigger between 1 s and 2 s after receiving a valid subaddress.
Fig 27. Device diode protection diagram of PCF2123
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 22 December 2010
OSCO
TEST
OSCI
V
INT
CE
SS
PCF2123
V
CLKOE
CLKOUT
SCL
SDI
SDO
001aai552
DD
SPI Real time clock/calendar
PCF2123
© NXP B.V. 2010. All rights reserved.
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