Port pin	Pin#	Function	Name	Description
P0.0	3	AD05	Transmission control	Analog input or switch
P0.1	26	AD00	Accelerator pot
P0.2	25	AD01	Brake pot	Optionally amplified and offset
P0.3	24	AD02	Accelerometer input
P0.4	23	AD03	Inclinometer input
P0.5	22	KBint5	Crank Input	Switch input to +12V; 1=On
P0.6	20	KBint6	Speedo pulse A	NPN to ground input
P0.7	19	KBint7	Speedo pulse B	NPN to ground input
P1.0	18	TxD		ISP and RS485
P1.1	17	RxD		ISP and RS485
P1.2	12	SCL	LED Green	1=On Needs 3k3 pullup added to board
P1.3	11	SDA	LED Orange	1=On Needs 3k3 pullup added to board
P1.4	10	INT1	LED Red	1=On
P1.5	6	RST	Clutch Switch	ISP; 0=On
P1.6	5	OCB	Brake output	PWM
P1.7	4	OCC	Indicator output	PWM
P2.0	1	AD07	Spare In	Analog input or switch
P2.1	2	AD06	Keyboard	Analog input or switch
P2.2	13		FWD/REV output	TTL, buffered; 1=Forward
P2.3	14		EN/DIS output	TTL, buffered; 1=Enable
P2.4	15		Drive ready	Opto coupled input; 0=On
P2.5	16		TxEn	RS485; 1=On
P2.6	27	OCA	Accelerator output	PWM
P2.7	28	ICA	Diagnostic LED switch & Upgood toggle	0=LED/Switch on, toggle for upgood
P3.0	9		Relay 1 - Prepower	Buffered, OC; 1=On
P3.1	8		Relay 2 - Main	Buffered, OC; 1=On
Vss	7			Ground
Vdd	21			+3V power

	Steven Murray, AirBorn Electronics Suite 501A, 220 Pacific Highway Crows Nest, NSW 2065, Australia	Ph (61)(2) 9925 0325 Fax (61)(2) 9922 4483 steve501@airborn.com.au
Man's mind, once stretched by a new idea, never regains its original dimensions. --Oliver Wendell Holmes, Jr