PSD813F1A-90MI

Overview

The PSD813F1A-90MI is a Programmable Microcontroller Peripheral IC from STMicroelectronics, designed for 8-bit MCUs. It integrates 1 Mbit Primary Flash Memory and 256 Kbit Secondary EEPROM, allowing concurrent read/write operations. The device includes 16 Kbit SRAM and over 3,000 PLD gates (DPLD/CPLD). It features 27 reconfigurable I/Os and supports In-System Programming via JTAG. Operating on a single 5 V supply, it offers high endurance with 100,000 Flash erase/write cycles and standby current as low as 50 µA. The component is housed in a 52-PQFP package.

Feature Summary

• Dual Bank Flash Memories: 1 Mbit Primary Flash and 256 Kbit Secondary EEPROM with concurrent operation capability.
• Programmable Logic Device: Over 3,000 gates including DPLD for chip-select decoding and CPLD with 16 Output Macrocells.
• Reconfigurable I/Os: 27 individually configurable port pins supporting MCU, PLD, address output, and special function modes.
• In-System Programmability: Built-in JTAG-compliant serial port for full-chip programming without MCU participation.

Applications

• Embedded designs requiring In-System Programming (ISP) for 8-bit microcontrollers.
• Applications needing simultaneous code execution and firmware updates via In-Application Programming (IAP).
• Systems utilizing programmable logic for custom address decoding and peripheral interfacing.

Procurement Notes

Verify the ordering suffix 'MI' corresponds to the 52-PQFP package and specific speed grade against official STMicroelectronics documentation. Confirm RoHS compliance status and ECOPACK packaging details for the specific batch. Ensure design compatibility with the 5 V ± 10% supply requirement and check for any obsolescence notices or recommendations against new designs.

Selection Notes

Select this component when an 8-bit MCU requires integrated Flash memory, EEPROM, and programmable logic in a single package. It is suitable for designs needing concurrent memory access for field updates. Verify that the 52-pin PQFP footprint fits the PCB layout. Consider the 100,000 cycle Flash endurance and 15-year data retention for long-term reliability requirements.

Part Context

The PSD813F1A belongs to the PSD family of Programmable Microcontroller Peripherals by STMicroelectronics. These devices bridge the gap between standard MCUs and discrete memory/logic components. The -90 variant typically denotes a 90 ns access time. The 'MI' suffix indicates the 52-PQFP plastic quad flat package. This series simplifies embedded system architecture by consolidating multiple peripheral functions.

Replacement Considerations

Check for other PSD813F1A variants with different packages (e.g., PLCC52, TQFP64) or speed grades. Consult STMicroelectronics for current recommended replacements if the part is marked not for new designs. Ensure pinout and electrical characteristics match exactly before substitution.