SD2405AL / SD2405 → RV-3028-C7
Cross-reference / replacement · whwave → Micro Crystal
- Type:
- RTC Module
- Current (typ):
- ~45 nA
- Interface:
- I²C
- Crystal:
- Integrated 32.768 kHz
Compatibility & sourcing notes
The SD2405 (whwave) and RV-3028-C7 are both I²C RTC modules with an embedded crystal, but not interchangeable at the bus level: the SD2405 uses address 0x32 with its own ~32-register map (and an on-chip backup battery), while the RV-3028-C7 uses 0x52 with a completely different register map, EEPROM-based config, a 32-bit UNIX-time counter, and a trickle charger. Firmware must be rewritten — a functional design-in alternative.
A functional alternative requiring design-in: pinout and driver may differ — re-validate with the corresponding development resources before production.
Frequently asked questions
Can RV-3028-C7 replace the SD2405AL / SD2405? ▾
The SD2405 (whwave) and RV-3028-C7 are both I²C RTC modules with an embedded crystal, but not interchangeable at the bus level: the SD2405 uses address 0x32 with its own ~32-register map (and an on-chip backup battery), while the RV-3028-C7 uses 0x52 with a completely different register map, EEPROM-based config, a 32-bit UNIX-time counter, and a trickle charger. Firmware must be rewritten — a functional design-in alternative.
What should I check when replacing the SD2405AL / SD2405? ▾
A functional alternative requiring design-in: pinout and driver may differ — re-validate with the corresponding development resources before production.
Is the RV-3028-C7 in stock, and can I get a quote? ▾
JLink Technology is an authorized distributor and supplies RV-3028-C7 with stock, pricing, and lead time. Click "Request a Quote" with your quantity and we reply within one business day.