PSD813F1A-90M

Overview

The PSD813F1A-90M is a Flash in-system programmable (ISP) peripheral for 8-bit microcontrollers, manufactured by STMicroelectronics. It integrates 1 Mbit of Primary Flash Memory and 256 Kbit of Secondary EEPROM, alongside 16 Kbit of SRAM. The device features over 3,000 PLD gates, including a Decode PLD (DPLD) and a Complex PLD (CPLD) with 16 Output Macrocells and 24 Input Macrocells. It provides 27 reconfigurable I/Os and supports concurrent read/write operations between memory banks. Designed for 5 V operation, it includes an enhanced JTAG serial port for full-chip ISP and a page register to expand the MCU address space.

Feature Summary

• Dual Bank Flash Memories: 1 Mbit Primary Flash and 256 Kbit Secondary EEPROM with concurrent operation capability.
• Programmable Logic Device (PLD): Over 3,000 gates comprising DPLD for chip-select decoding and CPLD with 16 OMCs and 24 IMCs.
• Reconfigurable I/Os: 27 individually configurable pins supporting MCU I/O, PLD I/O, latched address output, and special functions.
• In-System Programmability: Built-in JTAG-compliant serial port allows programming of Flash, EEPROM, and PLD while soldered to the board.

Applications

• 8-Bit MCU Peripherals
• Embedded system designs requiring In-Application Programming (IAP)
• Battery charging process fuzzy logic control

Procurement Notes

Verify that the component is sourced from authorized distributors or manufacturers, as this part is not recommended for new designs. Confirm the package type matches the required PCB footprint, specifically the 52-PQFP variant indicated by the 'M' suffix. Ensure compliance with RoHS standards if environmental regulations apply to the final assembly.

Selection Notes

Select this component when designing with 8-bit MCUs that require external Flash and EEPROM expansion with programmable logic. It is suitable for applications needing concurrent memory access and field-updatable firmware via JTAG. Consider the 5 V supply requirement and the specific pinout compatibility with the target microcontroller's bus interface before integration.

Part Context

The PSD813F1A belongs to the PSD family of Programmable Microcontroller Peripherals from STMicroelectronics. This series combines Flash memory, EEPROM, and PLD functions into a single device to simplify embedded designs. The 'M' suffix denotes the PQFP52 package option, distinguishing it from other package variants like PLCC52 (J) or TQFP64 (U).

Replacement Considerations

Consult the official datasheet for pin-compatible alternatives within the PSD family. Verify electrical parameters and package dimensions before substituting. No direct public substitute part numbers are confirmed in the provided documentation.