RTC/CALENDAR Datasheet(PDF) - PCF8523

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCF8523	1Mb/66P	Real-Time Clock (RTC) and calendar Rev. 3-30 March 2011
NXP Semiconductors	PCF8523	700Kb/75P	Real-Time Clock (RTC) and calendar Rev. 4-5 July 2012
Intersil Corporation	X1205	331Kb/22P	2-Wire RTC Real Time Clock/Calendar
STMicroelectronics	STM32L431XX	2Mb/200P	RTC with HW calendar, alarms and calibration May 2016 Rev 1
Renesas Technology Corp	X1205	873Kb/22P	2-Wire??RTC Real Time Clock/Calendar
Intersil Corporation	X1227	405Kb/28P	2-Wire??RTC Real TimeClock/Calendar/ CPU Supervisor with EEPROM
Renesas Technology Corp	X1227	1Mb/28P	2-Wire??RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM
Intersil Corporation	X1227	422Kb/28P	2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM
	X1288	428Kb/27P	2-Wire??RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM
	ISL12057	298Kb/17P	Low Cost and Low Power I2C RTC Real Time Clock/Calendar
Xicor Inc.	X1288	560Kb/31P	2-Wire RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM
Renesas Technology Corp	X1288	1Mb/27P	2-Wire??RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM
	ISL1208	1,010Kb/24P	I2C Real Time Clock/Calendar, Low Power RTC with Battery Backed SRAM
	ISL1208	1Mb/25P	I2C Real Time Clock/Calendar, Low Power RTC with Battery Backed SRAM Jul 15, 2022
	X1226	993Kb/25P	4K (512 x 8), 2-Wire??RTC Real Time Clock/Calendar with EEPROM
Maxim Integrated Produc...	DS1904	139Kb/12P	Real-Time Clock/calendar in binary format RTC iButton Over 10 years of operation Rev 4/11
Renesas Technology Corp	X1243	713Kb/17P	16K (2K x 8), 2-Wire RTC Real Time Clock/Calendar/Alarm with EEPROM April 28, 2005
	X1286	1Mb/25P	2-Wire??RTC, 256k (32k x 8) Real Time Clock/Calendar/CPU Supervisor with EEPROM
	X1228	1Mb/29P	4K (512 x 8), 2-Wire ??RTC Real Time Clock/Calendar/CPU Supervisor with EEPROM
	M16C26A-C	516Kb/17P	Sample Program (Calendar)

RTC/CALENDAR Datasheet, PDF

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