MAX31341B Datasheet PDF Download, Maxim Integrated





(PDF) MAX31341B Datasheet Download

Part Number MAX31341B
Description Real-Time Clock
Manufacture Maxim Integrated
Total Page 30 Pages
PDF Download Download MAX31341B Datasheet PDF

Features: Click here for production status of spec ific part numbers. MAX31341B EVALUATIO N KIT AVAILABLE Low-Current, Real-Time Clock with I2C Interface and Power Mana gement General Description The MAX3134 1B low-current, real-time clock (RTC) i s a time-keeping device that provides n anoamperes timekeeping current, extendi ng battery life. The MAX31341B supports 6pF high-ESR crystals, which broaden t he pool of usable crystals for the devi ces. This device is accessed through an I2C serial interface. The device featu res one digital Schmitt trigger input a nd one programmable threshold analog in put. The device generates an interrupt output on a falling or rising edge of t he digital input (D1), or when the anal og input (AIN) voltage crosses a progra mmed threshold in either direction. An integrated power-on reset function ensu res deterministic default register stat us upon power-up. Other features includ e two time-of-day alarms, interrupt out puts, a programmable square-wave output, a serial bus timeout m.

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Click here for production status of specific part numbers.
MAX31341B
EVALUATION KIT AVAILABLE
Low-Current, Real-Time Clock with
I2C Interface and Power Management
General Description
The MAX31341B low-current, real-time clock (RTC) is
a time-keeping device that provides nanoamperes time-
keeping current, extending battery life. The MAX31341B
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
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 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. The device
supports the -40°C to +85°C extended temperature range.
Applications
● Medical
● Wearables
● Point-of-Sale (POS)
● Telematics
● Portable Instruments
● Portable Audio
Benefits and 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
● 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
● Saves Board Space
• Integrated Load Capacitors for Crystal Oscillator
• 2mm x 1.5mm, 12-Bump WLP with 0.5mm Pitch
● 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
● 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
Typical Operating Circuit
VCC
CONTROL
SYS TE M
SDA
SCL
D1
VCC
MAX313 41B
INTA/CLKIN
INTB/CLKOUT
X1
X2
AIN
GND
VBACKUP
Ordering Information appears at end of data sheet.
19-100537; Rev 1; 5/19

                    
                    






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