 ULINK®-ME User's Guide Preliminary | |
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ULINK®-ME User's Guide
Introduction Hardware Description
USB Interface LED Indicator Start Sequence Reset Sequence Setting Up and Using ULINK-ME Evaluation BoardsReset Sequence
ULINK-ME's reset sequence is device-specific. To reset most devices, ULINK-ME asserts the JTAG RESET signal (pin 15 on the ARM JTAG connector), then attempts to immediately stop the device.
Some ARM devices do not support an immediate stop after a reset and instruction execution happens before ULINK-ME can issue a stop command. For these devices, when ULINK-ME gets control, it stops the CPU, and then sets the MCU's program counter (PC) and stack register (CSPR) to simulate an immediate stop after reset.
Side-Effects for ARM Devices
Resetting an ARM device may generate unexpected side-effects. The following Knowledgebase Articles describe these side effects in more detail:
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