STMicroelectronics DK4000-XA-110

Overview

DK4000-XA-110 from STMicroelectronics is a C167CR microcontroller-focused development board featuring the PSD4135G2 Programmable System Device (4 Mbit main Flash, 256 Kbit boot Flash, 64 Kbit SRAM), JTAG ISP programming interface (IEEE 1149.1), UART-based In-Application Programming (IAP), and integrated 2×16 character LCD display for real-time firmware state feedback. It enables memory-swapping demonstrations between boot and main Flash via hardware DIP switch control.

For engineers reviewing the DK4000-XA-110 datasheet, DK4000-XA-110 pinout, DK4000-XA-110 application, or DK4000-XA-110 equivalent, this board serves as a validated platform for C167CR firmware development, field-upgradable embedded systems design, JTAG boundary-scan validation, and PSD4000 PLD configuration prototyping - with direct support for PSDsoft Express toolchain integration and FlashLINK parallel-port programmer compatibility.

Technical Context

The DK4000-XA-110 implements a dual-Flash architecture enabling runtime code relocation: execution can be switched between csboot0/csboot1 (0x0–0x3FFF) and FS0 (0x10000–0x1FFFF) by toggling bit6 (exe_src_a) in the PSD PAGE register via onboard DIP switch. This allows verified IAP transitions without MCU reset or bus interruption.

JTAG ISP operates independently of the C167CR MCU - the !RST signal halts the processor during programming, and the PSD's IEEE 1149.1-compliant TAP controller programs Flash, PLD logic, and configuration registers while the device remains soldered on-board. UART IAP requires active MCU execution and uses standard serial framing (19200 baud, 8N1).

Key Specifications

Availability

DK4000-XA-110 is available at Aetrix Electronics and suitable for industrial control prototyping, automotive ECU firmware validation, embedded bootloader development, and academic microcontroller instruction requiring stable component supply and legacy toolchain compatibility.

Supply support for DK4000-XA-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 system devices for industrial, automotive, and consumer applications.

The DK4000 series belongs to ST's PSD (Programmable System Device) evaluation platform product line, designed specifically to accelerate adoption of Flash-based, PLD-enhanced system-on-package solutions for C167CR and ST10 microcontroller ecosystems.

FAQ

Does DK4000-XA-110 support both JTAG ISP and UART IAP simultaneously?

No - JTAG ISP halts the C167CR via the !RST signal and bypasses the MCU entirely, while UART IAP requires the MCU to be actively running and executing IAP handler code. The two modes are mutually exclusive operationally; ISP is used for initial programming or recovery, IAP for field updates after boot.

What is the role of the DIP switch on DK4000-XA-110?

The 4-position DIP switch configures memory boot source and peripheral enablement: position SW1 controls exe_src_a bit in the PSD PAGE register to select execution from boot Flash (csboot0/1) or main Flash (FS0); SW2–SW4 configure C167CR boot elements, JTAG chaining, and OWE control per JP5–JP8 jumpers.

Is the LCD display directly controlled by the PSD or the C167CR?

The LCD is driven exclusively by the C167CR MCU via dedicated GPIO pins and software-controlled timing - the PSD4135G2 provides only memory-mapped registers (CSIOP space at 0x0BF00) and chip selects for the display interface; no built-in LCD controller exists in the PSD.

Can DK4000-XA-110 be used with modern Windows OS versions?

PSDsoft Express was originally designed for Windows 95/98/NT/2000 and relies on parallel-port JTAG communication via FlashLINK. Modern use requires USB-to-parallel adapters with legacy driver support or virtual machine environments; ST no longer provides updated drivers or native Windows 10/11 compatibility for this toolchain.