CML12C32SLK Freescale Semiconductor, CML12C32SLK Datasheet - Page 12

• Manufacturer Part Number: CML12C32SLK
• Description: KIT STUDENT LEARNING 16BIT HCS12
• Manufacturer: Freescale Semiconductor
• Type: MCUr

Specifications of CML12C32SLK

• Contents: *
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

C M L - 1 2 C 3 2
J2 LCD EXPANSION
The J2 option header is explained in detail in the LCD_PANEL section below.
VRH_EN/VRL_EN
The VRH_EN and VRL_EN option headers are not installed on the CML-12C32 board and are
hard connected by circuit copper trace for default operation. These jumpers provide voltage
reference inputs for the MCU analog to digital converter block. Alternative upper and lower
reference voltages may be used by cutting the circuit trace and attaching a jumper wire to the
appropriate pin of VRH_EN and VRL_EN. After cutting the circuit trace, use of default refer-
ence voltages will require installing a 2-position header with a shunt jumper. Refer to the PCB
schematic for further details.
CUT-TRACE OPTIONS
A CUT-TRACE is a component pad connected by a circuit trace. The cut-trace sets up default
board operation. Cut-trace options allow the user to disconnect or modify on-board resource
configurations. The cut-trace pad also allow for reestablishing the connection by installing
surface mount, 1206 size, 0-ohm resistors or mod-wire. Normal operation of the development
board generally does not require manipulating any CUT_TRACE option.
CT1: Removed – Not Used.
CT2: Removed – Not Used.
CT3: MCU Port M1/TXCAN signal to the CAN Controller Interface.
CT4: MCU Port M0/RXCAN signal to the CAN Controller Interface.
CT5: CAN Port Transceiver Enable. The default connections enables device output con-
CT6: Vcc input to the LCD panel.
CT7: GND input to the LCD. panel.
PORTS AND CONNECTORS
stantly. This connection enables the CAN Port transceiver output to the CAN bus. To
use slew rate control or MCU controlled enable on the transceiver, this option should be
cut and 1206 size resistor installed for slew rate control or a MCU I/O port attached for
output enable control. See the PCA82C250 data sheet for application information.
2
3
1
PAD7/AN7 (U1-58)
POT
MCU_PORT-27
Shunt across pins 1-2 to route POT output to the MCU.
Shunt across pins 2-3 to route POT output to the
MCU_PORT pin 27.
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J U L Y
2 6 ,
2 0 0 4