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20b:keyboard_details [2008/07/22 23:35]
admin
20b:keyboard_details [2008/07/23 21:14] (current)
hpmad
Line 1: Line 1:
 +===== Keyboard details =====
 +
 +(Again, someone should please verify this and double check my work.)
 +
 +==== Row/Column to Port translation ====
 +
 +The keypad matrix row and column lines are connected to PIOC lines (port C, general purpose I/O).
 +
 +The ON key is tied to PC10 and FWUP.  it is not part of the matrix.
 +
 +^Port pin^Keypad connection^
 +|PC0        |Keypad column 0|
 +|PC1         ​|Keypad column 1|
 +|PC2         ​|Keypad column 2|
 +|PC3         ​|Keypad column 3|
 +|PC4         ​|Keypad column 4|
 +|PC5         ​|Keypad column 5|
 +|PC6         ​|Keypad column 6|
 +|PC11        |Keypad row 0|
 +|PC12        |Keypad row 1|
 +|PC13        |Keypad row 2|
 +|PC14        |Keypad row 3|
 +|PC15        |Keypad row 4|
 +|PC26        |Keypad row 5|
 +
 +==== Key to Row/Column translation ====
 +
 +| ^Row 0 ^Row 1 ^Row 2 ^Row 3 ^Row 4 ^Row 5 ^
 +^Column 0 |N |I/YR |PV |PMT |FV |Amort |
 +^Column 1 |CshFl |IRR |NPV |Bond |% |RCL |
 +^Column 2 |Input |( |) |+/- |Backspace | |
 +^Column 3 |Up |7 |8 |9 |Divide | |
 +^Column 4 |Down |4 |5 |6 |X | |
 +^Column 5 |Shift |1 |2 |3 |- | |
 +^Column 6 | |0 |. |= |+ | |
  
20b/keyboard_details.txt · Last modified: 2008/07/23 21:14 by hpmad