[tmk_keyboard.git] / keyboard / pana_m8 / README

Panasonic VP-0187A
==================
It is unknown keyboard from Panasonic

6P6C connector

Hirose Cheery M8 switches
https://deskthority.net/wiki/Cherry_M8


Scan
----
The keyboard is comprised of some of 4000 series IC without microcontroller.


    RST>-----------+---------------+
                   |               |
            TC4520 |        TC4520 |
            --------- carry ---------
    CLK>--->|row    |------>|col    |
            |counter|Q3     |counter|
            ---------       ---------
             Q012            Q012
              |||             |||
              |||             ABC   TC4028
              |||           ---------
              |||           |decoder|
              |||           ---------
              |||            |||||| col[0..7]
              ABC            vvvvvvv   pull down
            ---------- <----|+++++++|--100K--+
            |data    | <----|+++++++|--100K--+
    STATE<--|selector| <----|+++++++|--100K--+
            | 7 to 1 | <----|+++++++|--100K--+
            ---------- <----|+++++++|--100K--+
                  row[0..7]                  |
                             8x8 matrix      -
                                            GND


Matrix
------
        0       1       2       3       4       5       6       7
    --------------------------------------------------------------------
    0   ESC     1       2       3       4       5       6       7
    1   8       9       0       -       ^       BS      INS     DEL
    2   TAB     Q       W       E       R       T       Y       U
    3   I       O       P       @       [       ]       F2      F1
    4   CTRL    A       S       D       F       G       H       J
    5   K       L       ;       :       RETURN  UP      F3      F4
    6   SHIFT   Z       X       C       V       B       N       M
    7   SPACE   ,       .       /       LEFT    RIGHT   DOWN    HOME


6P6C connector pinout
---------------------
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.
5. Reset     - resets counter and drives all column
6. GND

      123456
    ,--------.
    |        |
    |        |
    `--____--'
       plug
Commit	Line	Data
353afe87	1	Panasonic VP-0187A
	2	==================
	3	It is unknown keyboard from Panasonic
	4
	5	6P6C connector
	6
	7	Hirose Cheery M8 switches
	8	https://deskthority.net/wiki/Cherry_M8
	9
	10
	11
	12	Scan
	13	----
	14	The keyboard is comprised of some of 4000 series IC without microcontroller.
	15
	16
	17	RST>-----------+---------------+
	18	\| \|
	19	TC4520 \| TC4520 \|
	20	--------- carry ---------
	21	CLK>--->\|row \|------>\|col \|
	22	\|counter\|Q3 \|counter\|
	23	--------- ---------
	24	Q012 Q012
	25	\|\|\| \|\|\|
	26	\|\|\| ABC TC4028
	27	\|\|\| ---------
	28	\|\|\| \|decoder\|
	29	\|\|\| ---------
	30	\|\|\| \|\|\|\|\|\| col[0..7]
	31	ABC vvvvvvv pull down
	32	---------- <----\|+++++++\|--100K--+
	33	\|data \| <----\|+++++++\|--100K--+
	34	STATE<--\|selector\| <----\|+++++++\|--100K--+
	35	\| 7 to 1 \| <----\|+++++++\|--100K--+
	36	---------- <----\|+++++++\|--100K--+
	37	row[0..7] \|
	38	8x8 matrix -
	39	GND
	40
	41
	42
	43	Matrix
	44	------
	45	0 1 2 3 4 5 6 7
	46	--------------------------------------------------------------------
	47	0 ESC 1 2 3 4 5 6 7
	48	1 8 9 0 - ^ BS INS DEL
	49	2 TAB Q W E R T Y U
	50	3 I O P @ [ ] F2 F1
	51	4 CTRL A S D F G H J
	52	5 K L ; : RETURN UP F3 F4
	53	6 SHIFT Z X C V B N M
	54	7 SPACE , . / LEFT RIGHT DOWN HOME
	55
	56
	57
	58	6P6C connector pinout
	59	---------------------
	60	1. VCC
	61	2. Clock - sends clock to binary counter TC4520
	62	3. Key State - indicates hi if key selected by counter is active
	63	4. Sense - indicates hi if any key is active while Reset is hi.
	64	5. Reset - resets counter and drives all column
65	6. GND
66
67	123456
68	,--------.
69	\| \|
70	\| \|
71	`--____--'
72	plug
73