Is the PSD813F1A-90MI in stock and how do I get pricing?

As an obsolete part, PSD813F1A-90MI pricing and availability are provided through our Request-for-Quote (RFQ) process. Submit an RFQ or contact Pacific Component Xchange and we will confirm current price, available quantity, and lead time.

Is the PSD813F1A-90MI still manufactured?

No. The PSD813F1A-90MI is obsolete and no longer in active production by STMicroelectronics. Pacific Component Xchange sources end-of-life and hard-to-find inventory so you can continue supporting legacy designs that rely on this device.

What are the main memory resources on the PSD813F1A-90MI?

The PSD813F1 variant integrates 2 Mbit (256K x 8) of primary flash in 8 uniform sectors, a separate 256 Kbit secondary flash in 4 sectors, plus on-chip SRAM, programmable logic (PLD), and configurable I/O. Confirm exact memory map against the STMicroelectronics datasheet for your design.

How is the PSD813F1A-90MI programmed in-system?

It supports In-System Programming (ISP) through an enhanced JTAG-compliant serial port, allowing the flash to be programmed and updated in-circuit without removing the device from the board, which is ideal for field-updatable firmware platforms.

What package and temperature grade does the PSD813F1A-90MI use?

It is supplied in a 52-pin PQFP (10 x 10 mm) package and is rated for the industrial temperature range of -40 C to +85 C (the 'I' suffix), with a 90 ns access time at a single 5 V supply.

Where can I find the datasheet for the PSD813F1A-90MI?

The STMicroelectronics PSD8xxFx family datasheet covering the PSD813F1A-90MI is available at https://www.st.com/resource/en/datasheet/CD00004948.pdf, which details the electrical, memory, and packaging specifications.

Are there alternatives if I need more quantity than available?

Other members of the PSD813F family (such as the PSD813F2A-90MI, which uses a 1 Mbit primary flash) offer similar integrated flash, SRAM, and I/O features and may serve as alternatives depending on memory needs. Contact Pacific Component Xchange and we can advise on suitable substitutes and source additional inventory.

PSD813F1-A-90MI – Flash ISP Peripheral (Programmable System Device) – STMicroelectronics

The PSD813F1A-90MI is an STMicroelectronics Flash In-System Programmable (ISP) peripheral for 8-bit MCUs, combining 2 Mbit primary flash, 256 Kbit secondary flash, SRAM, programmable logic, and configurable I/O in a 52-PQFP package.

Brand:STMicroelectronics

SKU: PSD813F1-A-90MI Categories: Electronic Parts, RFQ

Please contact us or add to quote for current pricing and availability.

The PSD813F1A-90MI from STMicroelectronics (originally developed by WSI/Waferscale Integration) is a Flash In-System Programmable (ISP) peripheral designed to consolidate memory, programmable logic, and I/O around 8-bit microcontrollers. By integrating two independent flash blocks, SRAM, a programmable logic device (PLD), and configurable I/O ports into a single 52-pin PQFP, the PSD813F1A-90MI reduces board space, cuts component count, and simplifies the design of 80C31/8051-class and similar embedded systems.

Operating from a single 5 V supply with a 90 ns access time and rated for the industrial temperature range, the PSD813F1A-90MI is well suited to field-updatable firmware platforms thanks to its enhanced JTAG-compliant ISP serial port, which allows the device to be programmed in-circuit without removing it from the board.

Key Features

Flash In-System Programmable (ISP) peripheral for 8-bit microcontrollers
2 Mbit (256K x 8) primary flash memory organized in 8 uniform sectors
256 Kbit secondary flash memory organized in 4 uniform sectors for concurrent operation and boot/firmware updates
On-chip SRAM (32 Kbit)
Enhanced JTAG-compliant serial port for in-system programming (ISP)
Integrated programmable logic (PLD) plus configurable I/O port pins for glue-logic and address decoding
Single 5 V supply operation
Fast 90 ns access time
52-pin PQFP package (10 x 10 mm)
Industrial temperature range (-40 C to +85 C)

Applications

8-bit microcontroller systems integrating memory, I/O, and PLD functions
Embedded industrial control
In-system programmable and field-updatable firmware platforms
Address decoding and glue-logic consolidation
Legacy 80C31/8051-class MCU designs requiring drop-in flash and logic integration

Why Source PSD813F1A-90MI from Pacific Component Xchange

The PSD813F1A-90MI is an obsolete device, which makes reliable sourcing essential for engineers maintaining legacy industrial and embedded designs. Pacific Component Xchange specializes in locating hard-to-find and end-of-life components like the PSD813F1A-90MI, backed by rigorous quality inspection and authenticity verification to protect your production line from counterfeit risk. With worldwide shipping, we can support both prototype quantities and ongoing maintenance needs. Request a quote (RFQ) today for current pricing, lead time, and availability on the PSD813F1A-90MI.

Additional Information

Manufacturer	STMicroelectronics (formerly WSI/Waferscale Integration)
Component Type	Flash ISP Peripheral (Programmable System Device)
Component Family	PSD813F
Package	52-pin PQFP (10×10 mm)
Part Status	Obsolete
Device Type	Flash In-System Programmable (ISP) Peripheral for 8-bit MCUs
Primary Flash Memory	2 Mbit (256K x 8), 8 sectors
Secondary Flash Memory	256 Kbit, 4 sectors
SRAM	32 Kbit
Supply Voltage	5 V
Access Time	90 ns
In-System Programming	Enhanced JTAG-compliant serial port (ISP)
Temperature Range	Industrial (-40 C to +85 C)