STMicroelectronics DK900-110

Overview

DK900-110 from STMicroelectronics is a complete development kit for the PSD9xxF family of Flash Programmable System Devices (PSDs), integrating an 8032-compatible MCU, on-board LCD display, JTAG ISP port, UART IAP interface, and FlashLINK programmer for in-system and in-application programming. It supports dual-flash architecture (MAIN + BOOT FLASH), on-board SRAM, and system expansion headers for embedded firmware development targeting industrial control and legacy 8051-based systems.

For engineers reviewing the DK900-110 datasheet, DK900-110 pinout, DK900-110 application, or DK900-110 equivalent, this kit enables rapid validation of PSD9xxF device configuration, memory mapping, JTAG boundary-scan programming, and field-upgradable firmware via UART - with direct support for PSDsoft Express and PSDload toolchains.

Technical Context

The DK900-110 implements a hardware-software co-development platform centered on ST's PSD9xxF Flash PSDs, which integrate configurable PLD logic, dual independent Flash arrays (for concurrent execute/erase), and SRAM into a single chip. The board hosts an 8032 MCU to manage IAP operations and drive the 2×16 character LCD for real-time status feedback.

JTAG ISP uses IEEE 1149.1-compliant signaling through a 10-pin header to program Flash, PLD, and configuration registers without MCU involvement; UART IAP relies on the MCU's serial interface to reprogram one Flash bank while executing from the other - enabling zero-downtime firmware updates over RS-232.

Key Specifications

Availability

DK900-110 is available at Aetrix Electronics and suitable for industrial control prototyping, legacy 8051 migration projects, and Flash PSD-based firmware update validation requiring stable component supply and long-term toolchain continuity.

Supply support for DK900-110 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader specializing in microcontrollers, power management, analog ICs, and programmable logic devices for automotive, industrial, and embedded applications.

The DK900-110 belongs to ST's PSD (Programmable System Device) development tools portfolio, designed specifically to accelerate adoption and firmware validation of its Flash-based, PLD-integrated PSD9xxF family for resource-constrained 8051-based systems.

FAQ

What software is required to use the DK900-110?

PSDsoft Express (Windows-based graphical IDE for JTAG ISP and memory map configuration) and PSDload (Windows 95/98/NT utility for UART-based IAP) are mandatory. Both are freely downloadable from ST's official PSD website - no bundled software is included on physical media beyond documentation and example binaries.

Does the DK900-110 support both ISP and IAP modes simultaneously?

No - ISP and IAP operate in mutually exclusive hardware configurations. ISP requires the FlashLINK JTAG programmer connected and the UART cable disconnected; IAP requires the FlashLINK to be removed and the null-modem UART cable connected. The board cannot perform both functions concurrently due to shared resource arbitration and reset sequencing constraints.

Can the DK900-110 be used with modern Windows versions like Windows 10 or 11?

PSDsoft Express and PSDload were officially validated only on Windows 95/98/NT. On modern Windows, they require compatibility mode, legacy parallel port drivers (for FlashLINK), and virtual COM port emulation - functionality is not guaranteed and may require third-party adapter solutions or VM-based execution environments.

Is the PSD9xx device pre-programmed on the DK900-110 board?

No - the DK900-110 ships with a blank PSD9xxF device (either PSD913F2 or PSD934F2) in the socket. Initial programming must be performed via JTAG ISP using the included FlashLINK programmer and PSDsoft Express before any IAP or application execution can occur.