BU9829GUL-W is a high reliability serial EEPROM with LDO regulator from ROHM, supporting SPI bus interface.
This technical note describes the BU9829GUL-W, a 2,048‑word (8‑bit) serial EEPROM that includes an integrated low‑dropout (LDO) regulator. It outlines key features such as a wide operating voltage range, low power consumption, and data security functions.
The document includes absolute maximum ratings, recommended operating conditions for both the EEPROM and LDO sections, timing diagrams, pin assignments, functional descriptions, and ordering information. It is intended for designers integrating the part into electronic equipment such as audio‑visual, office‑automation, and communication devices.
| Memory capacity | 2,048 words x 8 bits |
|---|---|
| Operating voltage range | 1.6 V ~ 3.6 V |
| Write/erase endurance | 100,000 cycles |
| Data retention | 10 years |
| Initial LDO output voltage | 2.9 V |
It provides 2,048 words of 8‑bit serial EEPROM memory.
The device operates from 1.6 V to 3.6 V.
It is rated for up to 100,000 erase/write cycles.