Jlink V9 Schematic Extra Quality Jun 2026

: Most V9 designs utilize an STM32F205 series MCU. This chip provides the necessary USB 2.0 Full Speed connectivity and high-speed GPIOs for JTAG signaling.

| Component | Part Number | Role | | :--- | :--- | :--- | | MCU | LPC4322FBD144 | Main processor | | Crystal | 12 MHz (or 25 MHz) | Clock source for USB PLL | | LDO | MIC5205-3.3 | 3.3V regulation | | Level Shifter | SN74LVC2T45 (x2) | SWDIO and SWCLK direction control | | ESD | PRTR5V0U2X | USB line protection | | Buffer | 74LVC1G07 | Reset output (open drain) | | Resistors | 10k pull-ups on SWDIO, nRESET | Define idle states | jlink v9 schematic

If you are looking to develop features or repair a unit, these are the primary functional blocks: USB Connector: : Most V9 designs utilize an STM32F205 series MCU