Pin 1: *Strobe
Pin 2: Data 0
Pin 3: Data 1
Pin 4: Data 2
Pin 5: Data 3
Pin 6: Data 4
Pin 7: Data 5
Pin 8: Data 6
Pin 9: Data 7
Pin 10: *Acknowledge
Pin 11: Busy
Pin 12: Paper Out
Pin 13: Select
Pin 14: +5V Pull Up (10 mA maximum.)
Pin 15: Unused
Pin 16: *Reset
Pin 17: Ground (Do not connect any of these grounds to a
shield.)
Pin 18: Ground
Pin 19: Ground
Pin 20: Ground
Pin 21: Ground
Pin 22: Ground
Pin 23: Ground
Pin 24: Ground
Pin 25: Ground