TWR-MCF51QM Freescale Semiconductor, TWR-MCF51QM Datasheet - Page 9

• Manufacturer Part Number: TWR-MCF51QM
• Description: MCF51JF Tower Module
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: MCUr

Specifications of TWR-MCF51QM

• Rohs Compliant: YES
• Contents: Board
• Peak Reflow Compatible (260 C): Yes
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MCF51QM128

The J11 header is used to select the power source that is supplied to one of the three possible voltage
regulators. The J12 header is used to select the regulated board power source. Refer to Table 1 and
Table 2 for details.
The 3.3V or 1.8V power supplied to the MCU is routed through a jumper, J15. The jumper shunt can be
removed to allow for either 1) alternate MCU supply voltages to be injected or 2) the measurement of
power consumed by the MCU.
TWRMCF51QMUM
2
1
2
1
2
1
2
1
2
1
2
1
2
1
J13 Shunt Setting
J14 Shunt Setting
―
+
Table 1. J11, Regulator Power Source Selection
TWR-MCF51QM Tower Module User's Manual
8
7
8
7
8
7
8
7
8
7
8
7
8
7
Table 2. J12, Board Power Source Selection
3-5
5-7
1-2
1-3
5-7
1-2
6-8
―
Board power is supplied by the 3.3V on-board (external)
regulator. This is the default setting.
Board power is supplied by the 1.8V on-board (external)
regulator.
Board power is supplied by the 3.3V MCF51QM on-chip
(internal) regulator.
Power from the 3.3V MCF51QM on-chip (internal) regulator is
supplied to the 1.8V on-board (external) regulator. Board
power is supplied by the 1.8V on-board (external) regulator.
Note: Take care not to install a shunt on J11 pins 1-2 when
J12 is in this configuration. It is recommended to remove the
shunt from J11 1-2 and use it on J12 for this setting.
An external battery or other alternate source can be
connected to pins 5 (positive) and 6 (negative, ground).
Power from the OSBDM interface (J16) supplied to the on-
board voltage regulators. This is a default setting.
Power from the Tower Primary Connector USB device
interface supplied to the MCF51QM on-chip regulator.
Description
Description
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