ULINK Debugger Comparison

Feature
Feature	ULINKpro	ULINKpro D	ULINK2	ULINK-ME
Debugging Features
RAM Breakpoints	Unlimited	Unlimited	Unlimited	Unlimited
ROM Breakpoints (ARM7/9)	2 max	2 max	2 max	2 max
ROM Breakpoints (Cortex-M)	6 max	6 max	6 max	6 max
Execution Breakpoints (Set While Executing)
Access Breakpoints (ARM7/9)	2 max (R/W Only, With Value)	2 max (R/W Only, With Value)	2 max (R/W Only, With Value)	2 max (R/W Only, With Value)
Access Breakpoints (Cortex-M)	4 max (With value)	4 max (With value)	4 max (With value)	4 max (With Value)
Debugging Support
Real-Time Agent (ARM7/9)
Serial Wire Debug (Cortex-M)
Data Trace (Cortex-M with SWO) (Serial Wire Viewer)
Instruction Trace (Cortex-M with ETM) (Embedded Trace Macrocell - ETM)
Performance
JTAG Clock	<= 50MHz	<= 50MHz	<= 10MHz	<= 10MHz
Memory R/W	≈ 1MB/s	≈ 1MB/s	≈ 28KB/s	≈ 28KB/s
Flash R/W	32KB/s	32KB/s	≈ 25KB/s	≈ 25KB/s
Trace Streaming	800Mb/s	100Mb/s	1Mb/s	1Mb/s
Connectors
10-pin (0.05") (Cortex Debug Connector)
20-pin (0.1") (ARM Standard JTAG Connector)
20-pin (0.05") (Cortex Debug+ETM Connector)
16-pin (0.1") (Infineon OCDS Connector)
14-pin (0.1") (ST µPSD Connector)
I/O Voltage Range	1.2V - 3.3V	1.2V - 3.3V	2.7V - 5.5V	3.0V - 3.6V
Supported Device Families
XC800 (8051)
µPSD (8051)
XC166/XE166/XC2000
LPC950 (8051)
ARM7
ARM9
Cortex-M0
Cortex-M0+
Cortex-M1
Cortex-M3
Cortex-M4
Cortex-M7

Note that hardware breakpoints are limited by the ARM Embedded ICE Hardware.
The original ULINK has been replaced by ULINK2.