PSD834F2V-15M

Overview

The PSD834F2V-15M is a Flash In-System Programmable (ISP) peripheral for 8-bit microcontrollers, manufactured by STMicroelectronics. It integrates 2 Mbit of primary Flash memory and 256 Kbit of secondary Flash memory, along with 64 Kbit of battery-backed SRAM. The device features over 3,000 gates of programmable logic, including a Complex PLD (CPLD) and Decode PLD (DPLD). It operates on a single 3.3 V supply voltage and provides 27 reconfigurable I/O ports. The component supports concurrent read and write operations and includes an enhanced JTAG serial port for full-chip in-system programming.

Feature Summary

• Dual Bank Flash Memory: 2 Mbit primary and 256 Kbit secondary Flash memories allow concurrent read/write operations.
• Programmable Logic: Includes over 3,000 gates with a CPLD (16 OMCs, 24 IMCs) and DPLD for address decoding.
• In-System Programming: Built-in JTAG interface enables full-chip programming without external programmers.
• Battery-Backed SRAM: 64 Kbit SRAM retains data via an external battery connection during power failures.

Applications

• Embedded designs requiring In-System Programmability for Flash memory and logic.
• Systems needing complex address decoding and simultaneous read/write capabilities.
• Applications utilizing 8-bit microcontrollers such as Intel 8031/196 or Motorola 68HC11/16.

Procurement Notes

Verify the specific speed grade suffix '15' against official datasheets to confirm access timing parameters. Confirm package availability for the 52-PQFP variant. Check current production status as preliminary data may indicate development phases. Ensure compatibility with 3.3 V supply requirements.

Selection Notes

Select this component when designing with 8-bit MCUs requiring integrated Flash and PLD resources. Ensure the design utilizes a 3.3 V supply. Consider the 52-pin PQFP package constraints. Verify that the required I/O count fits within the 27 configurable pins. Evaluate if the JTAG interface meets testing and programming needs.

Part Context

The PSD834F2V belongs to the PSD family of Flash peripherals for 8-bit MCUs. It addresses challenges in managing discrete Flash devices by integrating ISP, address decoding, and concurrent operation. The device simplifies embedded system design by combining memory, logic, and I/O functions into a single chip.

Replacement Considerations

Consult official STMicroelectronics documentation for verified cross-references. No public substitute part numbers are confirmed in the provided source material.