ARM20-CTX · 20-Pin ARM SWD Adapter for TC2030-IDC

Short description

Adapter board between the 20-pin ARM connector on your debugger (2 × 10, 2.54 mm / 0.1″) and a TC2030-IDC or TC2030-IDC-NL cable — for ARM SWD. The 20-pin connector goes to the debugger, not to the target board.

Connections

Full pin assignment: in the "Technical data" tab.

Compatible: SEGGER J-Link, Keil ULINK, ST-LINK/V2 and the other debuggers using the classic 20-pin 2.54 mm ARM connector.

Not, or not directly, compatible

• 12-pin — Lattice HW-USBN-2B: through the adapter board TC-LATTICE
• 14-pin, 2 × 7, 2.54 mm (0.1″) — Renesas E1 / E2 / E8a / E20: through the adapter board TC-RENESAS

Easily confused: There is also a 20-pin Cortex connector on 1.27 mm (IAR I-Jet, Keil ULINK Pro, SEGGER J-Trace) — same pin count, half the pitch.

An alternative we build ourselves

Collion manufactures the COLL-ARM20-06-IDC.

It serves the same connection — 20-pin ARM connector to TC2030-IDC or TC2030-IDC-NL — and additionally carries:

• 39 Ω in SWDIO, SWCLK and SWO. Series resistors in the signal path damp overshoot and ringing, noticeable over a longer signal path and at high clock rates. 0603 size, replaceable with an ordinary soldering iron. Ten resistors each in 22 Ω, 27 Ω, 33 Ω, 39 Ω and 43 Ω are included, so the damping can be matched without ordering anything first.
• Reset can be separated. Instead of a solid connection, a 0 Ω resistor sits in the reset line. Unsolder it and the debugger's reset is separated from the target.
• Test points. Every signal is also brought out to its own via, plus a bare ground plane. That lets you use the short ground connection at the probe tip instead of the long clip.
• Supply via pin 19, switchable by solder bridge, open as shipped.
• Takes ECV3-06-IDC as well, not just the TC2030 cables.

From two pieces on, it is also the less expensive route.

It connects the same way as the ARM20-CTX: both carry a socket and plug straight onto the debugger's 20-pin male header — a SEGGER J-Link, for instance. If you need the counterpart for a ribbon cable instead, Tag-Connect offers it as the ARM20-CTX-M and Collion as the COLL-ARM20-MALE-06-IDC — the same board with a pin header instead of a socket.

The ARM20-CTX stays in the range. If all you need is the adaptation, it is the right choice — the points above pay off when you want to measure or intervene in the signal.

→ COLL-ARM20-06-IDC

Technical data

• Compatibility: ARM SWD (Serial Wire Debug)

In use with these devices

ST STM32 with ST-LINK/V2 and ST-LINK V3 SET · ARM Cortex in general · PEmicro/P&E Multilink and Cyclone series · Segger J-LINK

What counts is the connector, not the device name: compare the connector on your device with the table above. If it carries a different one, the route goes through an adapter board.

Included

Adapter only. The TC2030-IDC or TC2030-IDC-NL cable is sold separately — the cable and Segger J-Link shown in product photos are not included.