Analog Devices MAX31329ELB+, I2C real-time clock/calendar, 64B RAM, alarm, leap year, trickle charger, 1.6V-5.5V supply, 0.5µA timekeeping, -40°C to 85°C, 10-LGA (5x5) package.
| Parameter | Value |
|---|---|
| Type | Clock/Calendar |
| Mounting | Surface Mount |
| Voltage | 1.6V ~ 5.5V |
| Voltage - supply, battery | 1.6V ~ 5.5V |
| Current - timekeeping | 0.5µA ~ 0.7µA @ 1.6V ~ 5.5V |
| Interface | I²C |
| Operating temperature | -40°C ~ 85°C |
| Package | Tray |
| Features | Alarm, Leap Year, RAM, Trickle Charger |
| Date format | YY-MM-DD-dd |
| Memory size | 64B |
| Time format | HH:MM:SS (12/24 hr) |
| Case | 10-LLGA |
The MAX31329ELB+ comes in a 10-pin LGA package (5x5 mm body, supplier device package 10-LGA). It is a surface-mount land-grid array — no leads, just pads on the bottom. The board footprint is compact, but rework requires a hot-air station or reflow oven; hand-soldering is not practical.
Yes, the supply voltage range of 1.6V to 5.5V covers 3.3V and 1.8V rails directly, so no level shifter is needed for the I2C bus if the host microcontroller runs at the same voltage.
Yes, the part includes a trickle charger feature for charging a backup battery or supercapacitor when main power is present.