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HTEB1
User manual
Issue 0.2 Page 8 07/2002
S_PROG/RUN switches between RUN- and
PROG(PROGRAMMING) mode.
KEY_1 (T1) to KEY_4 (T4) are user keys.
RESET_KEY (T7) is for reset.
Orientation Operation
LEFT PROG(programming) mode
RIGHT RUN mode
Main crystal (Q1) can be changed to another
frequency. Therefore a crystal socket is provided.
Please refer to the microcontroller hardware
documentation for recommended devices. The crystal
type should be a HC49 / HC49U type. Eventually
change the capacitors C6/C7 if necessary. If you
change the crystal frequency take care on possible
changes by flash download tool (see FDT manual).
Figure 1.5 crystal socket