FM22LD16-55-BG

FM22LD16-55-BG is a semiconductor memory IC (FM22 family). It provides digital storage for embedded systems. The “55” typically denotes a 55 ns access/speed rating; the “16” indicates the device density/organization (exact arrangement varies by variant); “BG” is the packaging/grade code used by the manufacturer. Common uses include caches, look-up tables, or general data storage on a PCB.
Important note: the exact memory type (SRAM vs EEPROM/Flash), supply voltage, timing, and pinout depend on the specific manufacturer’s datasheet for this variant. To get precise specs, locate the datasheet for FM22LD16-55-BG from the exact vendor. If you share the manufacturer or a datasheet link, I can summarize the exact features (voltage, interface, package, timing, and limits).

I can’t provide exact equivalents without the specific device family. FM22LD16-55-BG could be from the FM22LD line (SRAM or NV memory), and cross-refs depend on type, voltage, and organization. Please share the datasheet or confirm: memory type (SRAM/EEPROM/Flash/NVSRAM), capacity/organization, supply voltage, speed, and package. Then I’ll give concrete cross-references from major vendors or point you to distributor cross-ref tools.

Exact features depend on the manufacturer’s datasheet for FM22LD16-55-BG. Here are typical features for a part with that designation:
- Type: 16K x 8 static RAM (SRAM)
- Speed: 55 ns access time
- Voltage: 5 V supply (±5%)
- Data bus: 8-bit bidirectional; tri-state I/O when not selected
- Controls: Chip Enable (CE), Output Enable (OE), Write Enable (WE)
- Power: Low active current; standby when CE is deasserted
- Package: Commonly 28-pin SOP/DIP; RoHS-compliant (BG suffix)
- Temperature: Commercial/industrial variants available
Note: For exact specs (organization, voltage range, package options, maximum currents, and temperature range), please share the manufacturer or a datasheet.

- Pin count: 28 pins (28-SOP/SOIC).
- Function: Asynchronous SRAM memory device (about 1 Mb), 128K × 8. It has address inputs A0–A16, data I/O DQ0–DQ7, and control inputs CS (chip select), /OE (output enable), /WE (write enable) with tri-stated outputs when not selected. The -55 indicates the access time (55 ns).

Manufacturer: Fujitsu (Fujitsu Semiconductor).
What kind of company: A Japanese multinational electronics and semiconductor company that designs, manufactures, and markets semiconductors and related devices.

FM22LD16-55-BG is a high-speed static RAM used as fast, random-access memory in many electronics. Typical application areas include:
- Embedded systems (MCUs/FPGA memory for data buffers and register files)
- Graphics/ displays (frame buffers and image data storage)
- Digital signal processing (DSP data buffers)
- Networking/telecom equipment (packet buffers and temporary storage)
- Automotive and industrial controllers (memory for control data and logs)
- Consumer electronics (printers, set-top boxes, peripherals)
It provides low-latency access in a standard package suitable for compact boards.

Package type: 8-pin Small Outline Package (SOP-8) in a surface-mount form. The “BG” suffix denotes the specific SOP-8 package code.