MAX31341BEWC+ by Analog Devices

Low-Current, Real-Time Clock with I2C Interface and Power Management

Status: Active
Series: MAX31341B
RoHS: Unknown
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The MAX31341B/MAX31341C low-current, real-time clock (RTC) is a time-keeping device that provides nanoamperes timekeeping current, extending battery life. The MAX31341B/MAX31341C supports 6pF high-ESR crystals, which broaden the pool of usable crystals for the devices. This device is accessed through an I2C serial interface. The device features one digital Schmitt trigger input and one programmable threshold analog input. The device generates an interrupt output on a falling or rising edge of the digital input (D1), or when the analog input (AIN) voltage crosses a programmed threshold in either direction. An integrated power-on reset function ensures deterministic default register status upon power-up. Other features include two time-of-day alarms, interrupt outputs, a programmable square-wave output, a serial bus timeout mechanism, and a 64-byte RAM for user data storage. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in 24-hour format. The MAX31341B/MAX31341C also includes an input for synchronization. When a reference clock (e.g., 32kHz, 50Hz/60Hz Power Line, GPS 1PPS) is present at the CLKIN pin and the enable external clock input bit (ECLK) is set to 1, the MAX31341B/MAX31341C RTC is frequency-locked to the external clock and the clock accuracy is determined by the external source. The device is available in lead (Pb)-free/RoHS-compliant, 12-pin, 2mm x 1.5mm WLP with 0.5mm pitch and 10-pin, 3mm x 3mm TDFN. The device supports the -40°C to +85°C extended temperature range. Design Solution: Give Your Wearable’s Micro Some Quality Sleep Time ›

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Prices starting from US$1.28

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Features

Increases Battery Life 180nA Timekeeping Current Wide Range of External Crystals with CL = 6pF and ESR up to 100kΩ for Minimal Current Draw Trickle Charger for External Super Capacitor or Rechargeable Battery
180nA Timekeeping Current
Wide Range of External Crystals with CL = 6pF and ESR up to 100kΩ for Minimal Current Draw
Trickle Charger for External Super Capacitor or Rechargeable Battery
Provides Flexible Configurability A Schmitt Trigger Input to Trigger Interrupt One Analog Input with Adjustable Threshold to Trigger Interrupt Programmable Square Wave Output for Clock Monitoring
A Schmitt Trigger Input to Trigger Interrupt
One Analog Input with Adjustable Threshold to Trigger Interrupt
Programmable Square Wave Output for Clock Monitoring
Saves Board Space Integrated Load Capacitors for Crystal Oscillator 2mm x 1.5mm, 12-Bump WLP with 0.5mm Pitch 3mm x 3mm, 10-pin TDFN
Integrated Load Capacitors for Crystal Oscillator
2mm x 1.5mm, 12-Bump WLP with 0.5mm Pitch
3mm x 3mm, 10-pin TDFN
Value Add Features for Ease-of-Use +1.6V to +3.6V Operating Voltage Range Countdown Timer with Repeat and Pause Functions 64-Byte RAM for User Data Storage
+1.6V to +3.6V Operating Voltage Range
Countdown Timer with Repeat and Pause Functions
64-Byte RAM for User Data Storage
Integrated Protection Power-On Reset for Default Configuration Automatic Switchover to Backup Battery or Super Capacitor On Power Fail Lockup-Free Operation with Bus Timeout
Power-On Reset for Default Configuration
Automatic Switchover to Backup Battery or Super Capacitor On Power Fail
Lockup-Free Operation with Bus Timeout

Specifications

Interface I2C
VSUPPLY (V) 3
Date/ Time Format (hh = sec/100) YY-MM-DD/ HH:MM:SSYY-MM-DD/ HH:MM:SS:hhYYYY-MM-DD/ HH:MM:SS
Time Keeping Current (nA) (typ) 180
CL (pF) 6
Memory Type NV SRAM
Memory Size (Bytes) 64
Time of Day Alarms 2
Package/Pins WLP/12
BudgetaryPrice (See Notes) 0.86

Last 6 months Inventory & Pricing History

MAX31341BEWC+ Clock,Timing & Frequency Management by Analog Devices

RTC, -40 TO 85DEG C

Semiconductors - ICs
> Clock,Timing & Frequency Management
> Real Time Clocks
Status: Unknown
Series: -
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Date Format YY-MM-DD-dd
Clock Format HH
Clock IC Type RTC
Supply Voltage Min 1.6V
Supply Voltage Max 3.6V
No. of Pins 12Pins
IC Interface Type I2C
Operating Temperature Min -40°C
RoHS Compliant Yes

Last 6 months Inventory & Pricing History

Alternative Descriptions

Low Current Real Time Clock wi | Analog Devices

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Is the MAX31341BEWC+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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