PC28F00AM29EWHA

PC28F00AM29EWHA is a parallel NOR flash memory device used to store firmware or other non-volatile code in embedded systems. It belongs to the 28F00 AM29 family and is accessed via a parallel address/data bus with standard flash control signals.
Key points:
- Interface: parallel I/O bus (x8 or x16 typically), with Chip Enable (CE), Output Enable (OE), and Write Enable (WE) signals.
- Capacity/organization: varies by revision; the exact bytes/blocks depend on the specific part revision, so check the datasheet for exact memory size and sector/page structure.
- Voltage: usually 3.3V (some variants tolerate 2.7–3.6V); verify for this exact part.
- Features: random access read; block/sector erase; program/verify sequences; status register.
- Package: commonly offered in surface-mount TSOP/DIP-like packages; “EWHA” hints at a specific package/temperature grade from the vendor.
Use: ideal for BIOS/firmware storage and other code areas requiring non-volatile, non-volatile flash access with predictable timing.
For precise specs (capacity, timing, voltage, package), consult the official datasheet from the vendor by searching “PC28F00AM29EWHA datasheet.”

PC28F00AM29EWHA is a parallel NOR flash memory device. Typical features (numbers can vary by grade; check the datasheet for exact specs):
- Capacity/organization: 4 Mbit total (512 KB), commonly 256K × 16 (16‑bit data bus)
- Interface: Parallel NOR flash, 16-bit wide data bus
- Supply voltage: Single 3.0–3.6 V (no separate Vpp in many modern grades)
- Access time: Fast read times (commonly in the tens of ns range, varies by grade)
- Read operations: Random read supported
- Erase/Program: Sector/block erase and byte/word/program operations
- Endurance: Typical program/erase cycles around 100k (geometry/grade dependent)
- Data retention: Long-term data retention (years)
- Protection: Hardware block protection/locking options
- Temperature range: Industrial (-40 °C to 85 °C) options available
- Packaging: Surface-mount packages (e.g., 32- or 48-pin TSOP/SOP), depending on variant
Note: Exact timing, block sizes, voltage requirements, and temperature range depend on the specific grade and packaging of this part. For precise features, consult the official datasheet or a vendor’s product page.

It's a NOR flash memory in a 28‑pin SOP/SOIC‑style package (SOP‑28, surface‑mount).

- Pin count: 28 pins
- Function: Parallel NOR flash memory (8-bit data bus) for non-volatile storage of firmware/program code (address lines, chip enable, output enable, write enable, etc.).

Manufacturer: Alliance Memory.
Alliance Memory is a fabless semiconductor company that designs and markets memory integrated circuits, including flash memory and SRAM, for embedded and consumer applications.

PC28F00AM29EWHA is a non-volatile flash memory device used for code and data storage in embedded systems. Common applications: boot code/firmware storage (execute-in-place or load), firmware updates, and configuration/parameter storage with data logging. Typical markets: automotive ECUs, industrial automation, consumer electronics (set-top boxes, cameras, audio/video), networking equipment, medical devices, IoT devices, and smart appliances.