PCF8563-HXY
HXY MOSFET
Needs validationmedium risk
PCF8563-HXY is an RTC candidate for BM8563EMA with voltage and pinout checks required.
Best Alternatives to BM8563EMA
BM8563EMA is a 1.2V to 5.5V I2C RTC in MSOP8. Similar 8563 RTCs exist, but pinout and low-voltage operation must be checked.
AI replacement insight
Electrical riskmedium
2.5V min candidates miss 1.2V use.
Package riskmedium
MSOP8 option is not isolated.
Firmware riskmedium
Register map not verified.
Sourcing riskmedium
Lifecycle is unclear for kept parts.
Can it be replaced directly?
Direct replacement for BM8563EMA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Review PCF8563-HXY or JSM8563T only for systems operating at 2.5V or above.
Main risk
Most candidates do not cover BM8563EMA operation down to 1.2V.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | BM8563EMA | PCF8563-HXY | JSM8563T | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Interface | I2C 400kHz | I2C 400kbit/s | I2C 400kbit/s | I2C 400kbit/s — bus aligns; JSM8563T: bus aligns | |
| Voltage | 1.2V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V — not for 1.2V rail; JSM8563T: not for 1.2V rail | |
| Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C — range aligns; JSM8563T: range aligns | |
| Package | MSOP8 | SOP8/MSOP8 | SOP8/MSOP8 | SOP8/MSOP8 — variant unclear; JSM8563T: variant unclear | |
| Pinout | 8-pin | 8-pin | 8-pin | 8-pin — pin functions missing; JSM8563T: pin functions missing |
Application & sourcing insights
Questions & answers
Verified drop-in options for BM8563EMA are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.