BR93L46RF-WE2

BR93L46RF-WE2 is a small serial memory device from the BR93L46 family (a ROHM semiconductor product). It provides non-volatile storage for tiny data chunks in embedded systems. The device uses a serial interface that is SPI/MICROWIRE-compatible, with standard pins CS (or CSn), CLK, DI (or DIN), DO (or DOUT), plus Vcc and GND in an 8-pin package. Typical operations include READ, WRITE, and WRITE ENABLE; it supports page write and write protection features to guard memory. It is intended for parameters, calibration data, small logs, and similar data-storage tasks where persistent data is needed between power cycles. Benefits include compact package, low power in standby, and simple bus wiring. Note: exact capacity (bits/kbits), voltage range, timing, and endurance vary by device revision; please consult the official datasheet for the WE2 variant to confirm parameters and pinout.

Equivalent drop-in parts (1Kb Microwire EEPROMs):
- ST: M93C46 / M93C46-W
- Atmel: AT93C46 (AT93C46B)
- Microchip: 93LC46B (and 93LC46)
- Central Semiconductor / CAT: CAT93C46
These share the same 128x8 (1Kb) Microwire interface and 8-pin package footprint.

Key features of BR93L46RF-WE2 (typical, consult datasheet for exact figures):
- Non-volatile serial EEPROM
- Organization: 128 x 8 (1Kb total)
- Interface: Microwire-compatible serial interface (CS, SK, DI, DO)
- Random read/write access
- Write cycle time (tWR) of a few milliseconds
- Endurance: ~100k write cycles; Data retention: ~100 years
- Write Protect (WP) pin for hardware write protection
- Operating voltage: commonly 2.7–5.5 V
- Operating/Ta range: typically -40 to 85°C (industrial)
- Low power with standby mode
- Package: 8-pin package (SOP) with WE2 marking for reel/lead-free options
Note: Exact electrical specs (current, timing, voltage range, temps) vary by revision; please refer to the official BR93L46RF-WE2 datasheet for precise values.

Pin count: 8 pins.
Function: BR93L46RF-WE2 is a serial EEPROM (1 Kbit) with a Microwire/SPI-compatible interface for non-volatile data storage. It provides Vcc, GND, Chip Select (CS), Clock/SK, Data In (DI), Data Out (DO), and typically two no-connects (or WP/NC) depending on package.

- Manufacturer: ROHM Semiconductor (ROHM Co., Ltd., Japan)
- What kind of company: A Japanese multinational manufacturer of semiconductors and electronic components, designing and producing ICs, diodes/transistors, LEDs, power devices, and other related products.

BR93L46RF-WE2 is a small non-volatile serial EEPROM used to store data persistently for embedded systems. Typical applications include:
- Microcontrollers: parameter, calibration, and ID data
- Device configuration and user preferences in consumer electronics
- Data logging, event counters, and usage statistics in industrial/appliance systems
- Boot/configuration data for firmware in automotive, IoT, and embedded devices
- Asset identification, inventory, and traceability in logistics and equipment management
These roles leverage its small size, persistence without power, and simple serial interface.

BR93L46RF-WE2 comes in an 8-pin SOP (SOIC) package.