max/tmk_keyboard
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

pana_m8: Fix unimap

Browse source
This commit is contained in:
tmk 2017-08-06 09:29:36 +09:00
parent 353afe87cc
commit 13fe8ac87b
3 changed files with 61 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

39
keyboard/pana_m8/README
View file

@ -1,10 +1,13 @@
Panasonic VP-0187A
==================
It is unknown keyboard from Panasonic
2017/08/06
6P6C connector
It is unknown keyboard from Panasonic with Hirose Cherry M8 and 6P6C connector.
Hirose Cheery M8 switches
Pictures:
http://imgur.com/a/GAZE7
Hirose Cheery M8 switches:
https://deskthority.net/wiki/Cherry_M8
@ -28,16 +31,25 @@ The keyboard is comprised of some of 4000 series IC without microcontroller.
||| |decoder|
||| ---------
||| |||||| col[0..7]
ABC vvvvvvv pull down
ABC TC4512 vvvvvvv pull down
---------- <----|+++++++|--100K--+
|data | <----|+++++++|--100K--+
STATE<--|selector| <----|+++++++|--100K--+
| 7 to 1 | <----|+++++++|--100K--+
---------- <----|+++++++|--100K--+
row[0..7] |
8x8 matrix -
GND
row[0..7] | 8x8 matrix |
| -
TC4078 | GND
------ |
SENSE<----| OR |========+ OR'd row[0..7]
------
- TC4520BP - Dual Binary Up Counter
- TC4028B - BCD-to-Decimal Decoder
- TC4512BP - 8-Channel Data Selector
- TC4081BP - Quad 2-Input AND Gate
- TC4071BP - Quad 2-Input OR Gate
- TC4078BP - 8-Input NOR/OR Gate
Matrix
@ -60,14 +72,23 @@ Matrix
1. VCC
2. Clock - sends clock to binary counter TC4520
3. Key State - indicates hi if key selected by counter is active
4. Sense - indicates hi if any key is active while Reset is hi.
4. Sense - indicates lo if any key is active while Reset is hi.
5. Reset - resets counter and drives all column
6. GND
123456
,--------.
| |
| |||||| |
| |
`--____--'
plug
Ping configuration
------------------
AVR ATmega32u4 is used as protocol converter.
PD0: Clock. Counter couts up at falling edge.
PD1: Key State. Hi if selected key is activated.
PD2: Sense. Lo if any key is activated while Reset is Hi.
PD3: Reset. Resets counters at riging edge.