ROHM BU9832GUL-W User Guide Manual
Summary
Discover the BU9832GUL-W, a high-reliability, serial EEPROM memory chip featuring an SPI BUS interface. This component provides robust data storage with up to 5MHz operation, low power consumption, and exceptional endurance (1 million write cycles). The manual offers comprehensive technical documentation, including detailed electrical specifications, timing diagrams, and operational guidelines for integrating this memory into general-purpose electronic devices. Ideal for embedded systems engineers designing equipment that requires reliable, non-volatile data retention.
Page 1 Text Content
High Reliability Serial EEPROMs
WL-CSP EEPROM family SPI BUS
No.10001EAT16
BU9832GUL-W
●Description BU9832GUL-W is a serial EEPROM of SPI BUS interface method.
●Features 1) High speed clock action up to 5MHz (Max.)
2) Wait function by HOLD terminal.
3) Part or whole of memory arrays settable as read only memory area by program. 4) 1.8 ~ 5.5V single power source action most suitable for battery use. 5) Page write mode useful for initial value write at factory shipment. 6) For SPI bus interface (CPOL, CPHA) = (0, 0), (1, 1) 7) Auto erase and auto end function at data rewrite. 8) Low current consumption At write action (5V) : 1.5m A (Typ.) At read action (5V) : 1.0m A (Typ.) At standby action (5V) : 0.1µA (Typ.) 9) Address auto increment function at read action 10) Write mistake prevention function Write prohibition at power on. Write prohibition by command code (WRDI). Write prohibition by WP pin. Write prohibition block setting by status registers (BP1, BP0) Write mistake prevention function at low voltage. 11) Data at shipment Memory array: FFh, status register WPEN, BP1, BP0 : 0 12) Data kept for 40 years. 13) Data rewrite up to 1,000,000times.
●Page write
Product number Number of pages
BU9832GUL-W 32 Byte
●BU9832GUL-W
Type Capacity Bit format Power source Package
voltage
BU9832GUL-W 8Kbit 1K×8 1.8~5.5V VCSP50L2
●Absolute maximum ratings (Ta=25℃)
Parameter Symbol Ratings Unit
Impressed voltage Vcc -0.3~+6.5 V Permissible dissipation Pd 220(VCSP50L2) *1 m W Storage Temperature range Tstg -65~+125 ℃ Operating Temperature range Topr -40~+85 ℃ Terminal voltage ― -0.3~Vcc+0.3 V *1 When using at Ta=25℃ or higher, 220m W to be reduced per 1℃
www.rohm.com 2010.10 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BU9832GUL-W User Guide Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 19 |
| File Size | 503.52 KB |
| Published | June 22, 2026 |
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Frequently Asked Questions
What is the write mistake prevention mechanism for this EEPROM?
Write prohibition can be managed by a physical WP pin, command code (WRDI), or status registers.
What voltage range is suitable for powering this serial EEPROM?
It operates on a single power source from 1.8V to 5.5V, which is noted as highly suitable for battery use.
Is the BU9832GUL-W safe for life-critical applications like medical instruments?
No. It is not designed for systems where failure could directly threaten human life or create a risk of injury.
What are the data retention and rewrite limits of this device?
The data array retains information for 40 years and allows up to 1,000,000 write cycles.