PC28F128P33T85A

PC28F128P33T85A is a 128‑Mbit non-volatile NOR flash memory device used to store firmware in embedded systems. Key points:
- Capacity: 128 Mbit (about 16 MB)
- Voltage: 3.3 V single-supply (P33 indicates 3.3 V operation)
- Interface: parallel NOR flash (address and data lines with control signals such as CE, WE, OE)
- Features: random read, page/program write, sector/block erase
- Endurance/retention: typical erase/program cycles in the 10^4–10^5 range with long data retention
Typical uses include storing boot code, firmware, and configuration data in microcontrollers, FPGAs, and SoCs. To use it, obtain and read the datasheet for exact timing, block size, page size, and pinout, then follow erase-before-program procedures and ensure proper voltage, timing, and decoupling. If you’re selecting this part, verify packaging and any temperature grade (the “A” in the suffix) in the datasheet.

Equivalent products (128-Mbit, 3.3V, parallel NOR Flash):
- ST M29W128G
- Spansion S29GL128P
- Winbond W29GL128P
- Macronix MX29GL128F
- SST SST28F128P

Here are the typical features of PC28F128P33T85A:
- 128 Mbit NOR flash memory (16 MB)
- 28-pin package; x8 I/O
- 3.3V operation
- Access time: 85 ns (T85)
- Random read support
- Sector/Block erase (with programmable erase sizes)
- Byte/word programming capabilities
- Ready/Busy status and protection features
- Endurance: around 100k erase cycles
- Data retention: >10–20 years (typical)
- Temperature grade: -40°C to +85°C (industrial/extended)
- Additional features: hardware protection, status register access
Note: exact block sizes, page size, and protection options may vary by revision; consult the datasheet for precise specifications.

- Pin count: 32 pins (32-pin package, e.g., SOP/TSOP).
- Function: 128-Mbit NOR flash memory with 3.3V operation (P33). Non-volatile storage for firmware/data with random-access read/write and control lines (CE, OE, WE, DQ). Temperature grade likely -40 to +85°C.

Manufacturer: Spansion Inc.
What kind of company: A semiconductor company that specializes in flash memory (NOR/NAND) products. Spansion originated as an AMD-Fujitsu joint venture and has since become part of Cypress Semiconductor (through acquisitions).

PC28F128P33T85A is a 128-Mbit, 3.3V NOR flash memory. Common application areas:
- Embedded systems for firmware storage and boot code
- Firmware update and recovery storage
- Data logging, configuration data, and look-up tables
- Automotive ECUs and other industrial controllers
- Consumer electronics (set‑top boxes, DVD players, printers, cameras)
- Networking equipment (routers, switches, access points)
- Medical devices requiring nonvolatile firmware/data memory
Concise and focused on nonvolatile code/data storage needs.

TSOP-48 (48-pin Thin Small Outline Package).