Sky130 OEB/GPIO

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	S
1	connections				MGMT MODE						USER MODE
2	analog	in	out	oeb	INPUT_NOPULL	INPUT_PULLUP	INPUT_PULLDOWN	OUTPUT	BIDIRECTIONAL	ANALOG	INPUT_NOPULL	INPUT_PULLUP	INPUT_PULLDOWN	OUTPUT	OUTPUT_MONITORED	BIDIRECTIONAL	ANALOG

3	O	-	-	-	X	X	X	X	X		X	X	X	X	X	X		Leak in USER mode
4	O	-	-	O	X	X	X	X	X		X	X	X	X	X	X		Required oeb low
5	O	-	F	-	X	X	X	X	X		X	X	X	X	X	X		Prohibted connection
6	O	-	O	-	X	X	X	X	X		X	X	X	X	X	X		Must have possible oeb Low
7	O	-	F	O	X	X	X	X	X		X	X	X	X	X	X		Must have possible oeb Low/?/High
8	O	-	O	O	X	X	X	X	X		X	X	X	X	X	X		Fixed output
9	O	O	-	-	X	X	X	X	X		X	X	X	X	X	X
10	O	O	-	O	X	X	X	X	X		X	X	X	X	X	X		O: has connection
11	O	O	F	-	X	X	X	X	X		X	X	X	X	X	X		F: fixed high or low
12	O	O	O	-	X	X	X	X	X		X	X	X	X	X	X		-: no connection
13	O	O	F	O	X	X	X	X	X		X	X	X	X	X	X		L: fixed low
14	O	O	O	O	X	X	X	X	X		X	X	X	X	X	X		H: fixed high
15	-	-	-	-							X	X	X	X	X	X		X: prohibited
16	-	-	-	O							X	X	X	X	X	X		LH: logic high
17	-	-	F	-							X	X	X			X		LL: logic low
18	-	-	O	-	X	X	X	X	X	X	X	X	X			X	X
19	-	-	F	LL							X	X	X			X
20	-	-	F	LH							X	X	X	X	X	X
21	-	-	F	O	X	X	X	X	X	X	X	X	X		X	X	X
22	-	-	O	O	X	X	X	X	X	X	X	X	X			X	X
23	-	O	-	-				X	X	X		X	X	X	X	X	X
24	-	O	-	O				X	X	X		X	X	X	X	X	X
25	-	O	L	-				X	X	X		X		X	X	X	X
26	-	O	H	-				X	X	X			X	X	X	X	X
27	-	O	O	-	X	X	X	X	X	X	X	X	X	X	X		X
28	-	O	L	O				X	X	X		X		X	X	X	X
29	-	O	H	O				X	X	X			X	X	X	X	X
30	-	O	O	O	X	X	X	X	X	X	X	X	X	X	X		X
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