OLIMEX© 2015
ARM-USB-OCD user's manual
CHAPTER 1: OVERVIEW
1. Introduction to the chapter
Thank you for choosing an OpenOCD debugger manufactured by OLIMEX LTD. This document
provides information about two of the ARM debuggers manufactured by OLIMEX LTD – ARM-
USB-OCD and ARM-USB-OCD-H.
ARM-USB-OCD and ARM-USB-OCD-H are very similar in features and hardware design.
Because of that when one of them is mentioned in this document it is safe to assume that the
information applies for both debuggers, unless it is specifically stated otherwise.
1.1 Features
The debuggers have the following features:
•
Debug all ARM microcontrollers with JTAG interface supported by OpenOCD
•
Use ARM's standard 2×10 pin JTAG connector
•
Support ARM targets working in voltage range 2.00V – 5.00V (1.65V – 5.00V for ARM-
USB-OCD-H)
•
Supported by the open-source community and OpenOCD debugger software
•
Automatic powering via the JTAG to your target board with up to 200mA at 5V
•
Able to power a target board via a standard DC barrel jack; cable for the external powering
included – 2.1×5.5×14mm female connectors at both ends
•
Downloadable Windows installer for full featured and open source tools as alternative to the
commercial ARM development packages: GCC C compiler, OpenOCD debugger and
Eclipse IDE.
•
Work with IAR EW for ARM via GDB server
•
Work with Rowley Crossworks IDE
•
Work with CooCox IDE
•
Supported in Windows, Linux and Mac
•
Dimensions (50×40)mm ~ (2×1.6)" + 20 cm ~ (8") JTAG cable – ribbon cable included
ARM-USB-OCD-H has these specific features over the ARM-USB-OCD:
•
High speed USB 2.0 with lower latency time, RTCK adaptive JTAG clock up to 30Mhz and
higher throughput achieve x3-x5 times faster programming speed than ARM-USB-OCD
•
Works with lower voltage targets (down to 1.65V); the ARM-USB-OCD can't debug targets
working at voltage levels lower than 2V.
ARM-USB-OCD has this specific feature over ARM-USB-OCD-H:
•
A jumper that allows you to change the voltage provided to the target. It can power 5V, 9V
or 12V targets; ARM-USB-OCD-H can provide only 5V to the target.
Page 5 of 33
