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Table ? 3. ? Battery ? Charger ? Interface ? Signals ?
MC34673 ? Signal ?
/PPR ? – ? Power ? Present ?
/EN ?‐? Enable ?
/CHG ?‐? Charging ?
MCF51JM ? Signal ?
PTG1 ?
PTG2 ?
PTG0 ?
3.3 System ? Clocks ?
The ? JM ? Badge ? Board ? provides ? a ? 12MHz ? crystal ? to ? the ? MCF51JM ? device. ?? This ? option ? is ? required ? to ?
achieve ? the ? 48 ? MHz ? system ? clock ? needed ? by ? the ? USB ? controller ? interface. ?? When ? the ? USB ? is ? not ?
operational, ? the ? MCF51JM ? can ? also ? operate ? from ? its ? internal ? reference. ?
3.4 USB ? Interface ?
The ? MCF51JM ? features ? a ? full ‐ speed ? USB ? dual ‐ role ? controller ? with ? on ‐ chip ? transceiver. ?? The ? JM ? Badge ?
Board ? is ? equipped ? with ? a ? mini ‐ AB ? USB ? connector ? wired ? for ? a ? USB ? device ? interface. ???
3.5 LED ? Matrix ? Display ?
A ? simple ? matrix ? of ? LEDs ? is ? provided ? as ? a ? display ? interface. ?? MCF51JM ? GPIO ? signals ? are ? used ? to ? control ?
the ? 5 ? x ? 16 ? matrix ? of ? LEDs. ?? The ? connection ? diagram ? and ? pin ? connection ? table ? are ? shown ? below. ?
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COL0
COL1
COL2
COL15
360
ROW0
360
ROW1
360
ROW2
360
ROW3
360
ROW4
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Figure ? 3. LED ? Matrix ? Connection ? Diagram ?
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JM ? Badge ? Board ? User’s ? Manual ?
Page ? 7 ? of ? 18 ?
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