Adaptation for ColdFire Debugger and Trace

BDM Connectors for ColdFire V2, V3 and V4

• The signals needed for debugging and tracing are combined in a single connector.
• Some of the pins in the schematics below have multiple alternate signal names. Please check the "BDM Connector Pinout" chapter of the reference manual for the exact CPU you are using for further details or contact our support team.
• The pins 2, 7 and 26 need a pull-up resistor on the target ranging from 1 kOhm to 5 kOhm.

BDM Connector 26 pin ColdFire V2 or V3 CPUs Debugger and Trace

Signal	Pin			Pin	Signal
N/C	1			2	BKPT-
GND	3			4	DSCLK
GND	5			6	N/C
RESET-	7			8	DSI
VDD_IO 1.8...5.0 V	9			10	DSO
GND	11			12	PST3
PST2	13			14	PST1
PST0	15			16	DDATA3
DDATA2	17			18	DDATA1
DDATA0	19			20	GND
N/C	21			22	N/C
GND	23			24	PSTCLK/CLKOUT/CPUCLK
VDD_CPU 1.8-5.0V	25			26	TEA-/TA-/DTACK-/BERR-

• If the tracing capability is not needed, DDATA3..0 can be connected or pulled down to GND.

BDM Connector 26 pin ColdFire V2 or V3 CPUs with ALLPST only Debugger

Signal	Pin			Pin	Signal
N/C	1			2	BKPT-
GND	3			4	DSCLK
GND	5			6	N/C
RESET-	7			8	DSI
VDD_IO 1.8-5.0V	9			10	DSO
GND	11			12	ALLPST
ALLPST or pull-up resistor	13			14	ALLPST or pull-up resistor
ALLPST or pull-up resistor	15			16	GND or pull-down resistor
GND or pull-down resistor	17			18	GND or pull-down resistor
GND or pull-down resistor	19			20	GND
N/C	21			22	N/C
GND	23			24	PSTCLK/CLKOUT/CPUCLK
VDD_CPU 1.8...5.0 V	25			26	TEA-/TA-/DTACK-/BERR-

• This connector cannot be used for tracing, because the CPU variants with the ALLPST signal miss the necessary PST3..0 and DDATA3..0 signals.

BDM Connector 26 pin ColdFire V4 CPUs Debugger and Trace

Signal	Pin			Pin	Signal
N/C	1			2	BKPT-
GND	3			4	DSCLK
GND	5			6	N/C
RESET-	7			8	DSI
VDD_IO 1.8...5.0 V	9			10	DSO
GND	11			12	PSTDDATA7
PSTDDATA6	13			14	PSTDDATA5
PSTDDATA4	15			16	PSTDDATA3
PSTDDATA2	17			18	PSTDDATA1
PSTDDATA0	19			20	GND
N/C	21			22	N/C
GND	23			24	PSTCLK
VDD_CPU 1.8-5.0V	25			26	TA-

Dimension

Connector Type

• This is a standard 26 pin double row (two rows of 13 pins) connector (pin to pin spacing: 2.54mm/0.100").
• If terminal strip without shroud is used, the spacing marked with "A" must be a minimum of 38.2mm/1.5".