PIN1/P1.2: R2 PIN2/P1.1/SDA: R3 PIN3/P1.0/SCL: R0 PIN4/P0.0/INT0: ?NC? PIN5/P0.1/INT1: ?NC? PIN6/P0.2: ?NC? [PIN7/VDD] PIN8/P4.0/AIN0: S2 PIN9/P4.1/AIN1: S4 PIN10/P4.2/AIN2: S7 PIN11/P4.3/AIN3: S8 PIN12/P4.4/AIN4: S6 [corner] PIN13/P4.5/AIN5: S3 PIN14/P4.6/AIN6: S12 PIN15/P4.7/AIN7: S13 [PIN16/VSS] PIN17/P0.3: S14 PIN18/P0.4: S11 PIN19/P0.5/URX: S10/KSO10 PIN20/P0.6/UTX: S15/KSO15 PIN21/P0.7/RST [PIN22/XIN] [PIN23/XOUT] [PIN24/VREG25] [corner] [PIN25/VSS] [PIN26/D+] [PIN27/D-] [PIN28/VREG33] [PIN29/VDD] PIN30/P2.0/SCK: S1 PIN31/P2.1/SDO: S5 PIN32/P2.2/SDI: S0 PIN33/P2.3: S9 PIN34/P2.4: trackpoint SCL PIN35/P2.5: trackpoint SDA PIN36/P2.6: trackpoint IRQ [corner] PIN37/P2.7: ?NC? PIN38/P5.0: ?NC? PIN39/P5.1: ?NC? PIN40/P5.2: ?NC? PIN41/P5.3/PWM0: LED D1 PIN42/P5.4/PWM1 ?NC? PIN43/P5.5/PWM2 ?NC? PIN44/P1.7 R1 PIN45/P1.6 R7 PIN46/P1.5 R6 PIN47/P1.4: R4 PIN48/P1.3: R5 Keyboard connector (PCB labels): R1 R6 R4 S0 R3 S1 S2 S7 S6 S12 S14 S10 MG MM R7 S9 R5 R2 S5 R0 S4 S8 S3 S13 S11 S15 ML MR Alternative names (S230U schematic): KSI1 KSI6 KSI4 KSO0 KSI3 KSO1 KSO2 KSO7 KSO6 KSO12 KSO14 KSO10 GND IPD_MIDDLE KSI7 KSO9 KSI5 KSI2 KSO5 KSI0 KSO4 KSO8 KSO3 KSO13 KSO11 KSO15 IPD_LEFT IPD_RIGHT Pin1: KSI1 Pin2: KSI7 [...] Pin27: IPD_MIDDLE Pin28: IPD_RIGHT Keyboard matrix (annotated ku1255_sim.py output): P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 R0 R3 R2 R5 R4 R6 R7 R1 UP (none) (none) END FN PAUSE LEFT KP_MEMSTORE P0.3/S14 (none) HOME (none) F11 (none) (none) DOWN (none) P0.4/S11 F5 F9 INTERNATIONAL3 F10 BACKSLASH RETURN SPACE BACKSPACE P0.5/S10 (none) DELETE (none) INSERT PRINTSCREEN PAGEUP PAGEDOWN (none) P0.6/S15 F4 F2 E 3 D C (none) F3 P2.0/S1 H 6 U 7 J M N Y P2.1/S5 ESCAPE GRAVE Q 1 A Z INTERNATIONAL5 TAB P2.2/S0 (none) (none) (none) (none) (none) RSHIFT (none) LSHIFT P2.3/S9 NONUSBACKSLASH F1 W 2 S X (none) CAPSLOCK P4.0/S2 G 5 R 4 F V B T P4.1/S4 INTERNATIONAL4 F8 O 9 L PERIOD INTERNATIONAL2 F7 P4.2/S7 APOSTROPHE MINUS P 0 SEMICOLON NONUSHASH SLASH LEFTBRACKET P4.3/S8 F6 EQUALS I 8 K COMMA INTERNATIONAL1 RIGHTBRACKET P4.4/S6 (none) LCTRL (none) (none) (none) RCTRL (none) (none) P4.5/S3 LALT KP_MEMSUBTRACT (none) (none) (none) (none) RALT (none) P4.6/S12 (none) (none) KP_MEMCLEAR F12 (none) (none) RIGHT LGUI P4.7/S13 Matrix (named order): P1.0 P1.7 P1.2 P1.1 P1.4 P1.3 P1.5 P1.6 R0 R1 R2 R3 R4 R5 R6 R7 ESCAPE TAB Q GRAVE A 1 Z INTERNATIONAL5 P2.2/S0 F4 F3 E F2 D 3 C (none) P2.0/S1 NONUSBACKSLASH CAPSLOCK W F1 S 2 X (none) P4.0/S2 (none) (none) (none) LCTRL (none) (none) RCTRL (none) P4.5/S3 G T R 5 F 4 V B P4.1/S4 H Y U 6 J 7 M N P2.1/S5 F6 RIGHTBRACKET I EQUALS K 8 COMMA INTERNATIONAL1 P4.4/S6 INTERNATIONAL4 F7 O F8 L 9 PERIOD INTERNATIONAL2 P4.2/S7 APOSTROPHE LEFTBRACKET P MINUS SEMICOLON 0 NONUSHASH SLASH P4.3/S8 (none) LSHIFT (none) (none) (none) (none) RSHIFT (none) P2.3/S9 F5 BACKSPACE INTERNATIONAL3 F9 BACKSLASH F10 RETURN SPACE P0.5/S10 (none) (none) (none) HOME (none) F11 (none) DOWN P0.4/S11 LALT (none) (none) KP_MEMSUBTRACT (none) (none) (none) RALT P4.6/S12 (none) LGUI KP_MEMCLEAR (none) (none) F12 (none) RIGHT P4.7/S13 UP KP_MEMSTORE (none) (none) FN END PAUSE LEFT P0.3/S14 (none) (none) (none) DELETE PRINTSCREEN INSERT PAGEUP PAGEDOWN P0.6/S15