MPC564EVB Freescale Semiconductor, MPC564EVB Datasheet - Page 29

• Manufacturer Part Number: MPC564EVB
• Description: KIT EVAL FOR MPC561/562/563/564
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC564EVB

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC56x
• Data Bus Width: 32 bit
• Interface Type: RS-232, Ethernet
• For Use With/related Products: MPC561, 562, 563, 564
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1.5 Connectors and User Components
1.5.1 Keypad
The Keypad port provides MPC564 I/O connections for a passive 16 key 4x4 matrix keypad
(Axiom HC-KP). The port is applied as 4 column drivers and 4 row inputs. The MPC564
QADC_B Ports PQA[4:7] are column outputs and PQB[4:7] are row inputs. The row inputs have
10K ohm pull-down resistance applied to idle the row inputs low. A simple keypad scan will
enable each column output high one at a time and test the input rows for a high input. Column and
row position can then determine the value of the key pressed. Sample software for driving the
Keypad Port is provided on the MPC5xx support CD.
1.5.2 LCD Port
The LCD Port provides a versatile connector to attach 80 or 160 character display modules and
some graphics display modules with embedded controllers. Most LCD modules operate very
slowly compared to the MPC564 bus operation speeds so the LCD port provides a 16 bit wide
register port for access. The registered port allows writing the LCD module control signals and full
Read and Write capability for LCD module command and data bytes without the CPU waiting for
LCD access time. LCD Port access are performed as a 3 or 4 bus cycle transaction as follows:
1
The MPC533/4 has limited or no functionality for this module. See Appendix A
2
3
1
This signal is needed only if control of EPEE or B0EPEE is
required by the Nexus tool.
This should be a 2.6-volt supply and not the ISRAMSTBY current
source.
Freescale Semiconductor, Inc.
For More Information On This Product,
PIN
MPC564EVB User’s Manual
1
2
3
4
5
6
7
8
Go to: www.freescale.com
Table 1-8. Keypad
MPC564
QADC_B PQA4 out
QADC_B PQA5 out
QADC_B PQA6 out
QADC_B PQA7 out
QADC_B PQB4 in
QADC_B PQB5 in
QADC_B PQB6 in
QADC_B PQB7 in
I/O SIGNAL
Connectors and User Components
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