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SUPPORT INFORMATION
Reference Designation
XU3-XU5
XU9
XU10
Y1
Y2
Fabricated jumper
1. MCU supplied with the EVB have the configuration (CONFIG) register ROMON bit
cleared to disable MCU internal ROM, thereby allowing external EPROM containing
the BUFFALO program to control EVB operations.
2. Crystal frequencies from 4 to 8 MHz (up to 8.4 MHz) can be used without any
changes to the 24 pF capacitors (C6 and C7) and 10M ohm resistor (R5) values.
3. 8 MHz crystal obtains 2 MHz E-clock/9600 baud MCU SCI operation. 4 MHz crystal
obtains 1 MHz E-clock/4800 baud MCU SCI operation.
6-10
Table 6-5. EVB Parts List (continued)
Socket, 28 pin, DIP, Robinson Nugent # ICL-286-S7-TG
(use with U3-U5)
Socket, 24 pin, DIP, Robinson Nugent # ICL-246-S7-TG
(use with U9)
Socket, PC mount, 52 pin, PLCC, AMP # 821-575-1
(use with U10)
Crystal, MCU, 8.0 MHz (Notes 2 & 3)
Crystal, ACIA, 2.4576 MHz
Aptronics # 929955-00 (use with jumper headers J1-J6)
NOTES
Component Description
M68HC11EVB/D
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