Integrated Circuits (ICs)

MCP795W22T-I/ST

Active

REAL TIME CLOCK/CALENDAR IC, SPI, 1.8 V TO 3.6V, HH:MM:SS:HH, YY-MM-DD-DD, TSSOP-14, -40 °C TO 85 °C

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsMCP795W1X/MCP795W2X - Battery-Backed SPI Real-Time Clock/Calendar with Enhanced Features Data Sheet Recommended Usage of Microchip Serial RTCC Devices +5

Integrated Circuits (ICs)

MCP795W22T-I/ST

Active

Microchip Technology

REAL TIME CLOCK/CALENDAR IC, SPI, 1.8 V TO 3.6V, HH:MM:SS:HH, YY-MM-DD-DD, TSSOP-14, -40 °C TO 85 °C

Deep-Dive with AI

DocumentsMCP795W1X/MCP795W2X - Battery-Backed SPI Real-Time Clock/Calendar with Enhanced Features Data Sheet Recommended Usage of Microchip Serial RTCC Devices +5

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	MCP795W22T-I/ST

Current - Timekeeping (Max)	1 µA
Features	Unique ID, Square Wave Output, EEPROM, Watchdog Timer, SRAM, Leap Year, Alarm
Interface	SPI
Memory Size	64 B
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Package / Case	14-TSSOP
Package / Case [custom]	0.173 "
Package / Case [custom]	4.4 mm
Supplier Device Package	14-TSSOP
Time Format	HH:MM:SS:hh (12/24 hr)
Type	Clock/Calendar
Voltage - Supply [Max]	3.6 V
Voltage - Supply [Min]	1.8 V
Voltage - Supply, Battery [Max]	3.6 V
Voltage - Supply, Battery [Min]	1.3 V

MCP795W22 Series

Enhanced Feature Battery-Backed SPI Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID

Part	Memory Size	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Voltage - Supply, Battery [Max]	Voltage - Supply, Battery [Min]	Supplier Device Package	Type	Features	Current - Timekeeping (Max)	Operating Temperature [Max]	Operating Temperature [Min]	Interface	Package / Case [custom]	Package / Case [custom]	Package / Case	Time Format	Package / Case [x]	Package / Case [y]
Microchip Technology MCP795W22-I/ST	64 B	Surface Mount	3.6 V	1.8 V	3.6 V	1.3 V	14-TSSOP	Clock/Calendar	Alarm EEPROM Leap Year Square Wave Output SRAM Unique ID Watchdog Timer	1 µA	85 °C	-40 °C	SPI	0.173 "	4.4 mm	14-TSSOP	HH:MM:SS:hh (12/24 hr)
Microchip Technology MCP795W22-I/SL	64 B	Surface Mount	3.6 V	1.8 V	3.6 V	1.3 V		Clock/Calendar	Alarm EEPROM Leap Year Square Wave Output SRAM Unique ID Watchdog Timer	1 µA	85 °C	-40 °C	SPI			14-SOIC	HH:MM:SS:hh (12/24 hr)	0.154 in	3.9 mm
Microchip Technology MCP795W22T-I/SL	64 B	Surface Mount	3.6 V	1.8 V	3.6 V	1.3 V		Clock/Calendar	Alarm EEPROM Leap Year Square Wave Output SRAM Unique ID Watchdog Timer	1 µA	85 °C	-40 °C	SPI			14-SOIC	HH:MM:SS:hh (12/24 hr)	0.154 in	3.9 mm
Microchip Technology MCP795W22T-I/ST	64 B	Surface Mount	3.6 V	1.8 V	3.6 V	1.3 V	14-TSSOP	Clock/Calendar	Alarm EEPROM Leap Year Square Wave Output SRAM Unique ID Watchdog Timer	1 µA	85 °C	-40 °C	SPI	0.173 "	4.4 mm	14-TSSOP	HH:MM:SS:hh (12/24 hr)

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tape & Reel (TR)	2500	$ 1.74
Microchip Direct	T/R	1	$ 1.98
		25	$ 1.84
		100	$ 1.74
		1000	$ 1.64
		5000	$ 1.60
Newark	Each (Supplied on Full Reel)	100	$ 1.80

Description

General part information

MCP795W22 Series

The MCP795W22 SPI RTCC is highly integrated with memory and advanced features normally found in higher priced devices. By starting with a basic real-time clock, digital trimming was added for higher accuracy, a battery switchover for backup power, a timestamp to log power failures and three types of memory, which includes SRAM, EEPROM and a unique ID in a locked section of EEPROM. This ID is preprogrammed with a 64-bit MAC Address, but it can also be ordered blank for the end user to program. By adding a watchdog timer and two programmable event detect inputs, lower power and more system robustness can be achieved by performaing these functions in the RTCC and allowing the MCU to sleep for longer periods of time.