MAX6900 General Description
MAX6900 Maximum Ratings
VCC to GND...........................................................-0.3V to +6V
All Other Pins to GND ...............................-0.3V to (VCC+ 0.3V)
Input Current
All Pins .........................................................................20mA
Output Current
All Outputs.....................................................................20mA
Rate of Rise, VCC............................................................100V/µs
Continuous Power Dissipation (TA= +70°C)
6-Pin TDFN (derate 24.4mW/°C above +70°C).......1951.0mW
Operating Temperature Range.................................TMINto TMAX
MAX6900 ETT-T ............................TMIN= -40°C, TMAX= +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
ESD Protection (all pins, Human Body model).....................2000V
Lead Temperature (soldering, 10s)..................................+300°C
MAX6900 Features
Real-Time Clock Counts Seconds, Minutes,
Hours, Date, Month, Day, and Year
Leap Year Compensation Valid up to Year 2100
Fast (400kHz) I2C-Bus-Compatible Interface from
2.0 V to 5.5 V
31 ✕8 SRAM for Scratchpad Data Storage
Uses Standard 32.768kHz, 12.5pF Load, Watch
Crystal
Ultra-Low 225nA (typ) Timekeeping Current
Single-Byte or Multiple-Byte (Burst Mode) Data
Transfer for Read or Write of Clock Registers or
SRAM
6-Pin 3mm x 3mm x 0.8mm TDFN Surface-Mount
Package
No External Crystal Bias Resistors or Capacitors
Required
MAX6900 Typical Application
Portable Instruments
Point-of-Sale Equipment
Intelligent Instruments
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