git.gir.st - tmk_keyboard.git/blame_incremental

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Commit	Line	Data
	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