Jun,1999 SC-8850 19 1 2 3 4 5 6 7 8 9 10 10 10 10 11 11 11 11 12 12 12 12 13 13 13 13 14 14 14 14 15 15 15 15 16 16 16 16 17 17 17 17 18 18 18 18 19 19 19 19 20 20 20 20 21 21 21 21 22 22 22 22 23 23 23 23 24 24 24 24 25 25 25 25 26 26 26 26 27 27 27 27 28 28 28 28 C 1 3 6 +5 D 0.1 D I/O8 1 9 D B 7 D B 6 D B 4 D B 2 D B 0 D B 1 D B 3 D B 5 I/O7 1 8 I/O6 1 7 I/O5 1 6 I/O4 1 5 I/O3 1 3 I/O2 1 2 I/O1 1 1 V D D 2 8 G N D 1 4 TC55257DFL-55L 256k-SRAM (28p-SOP) IC12 A 1 4 1 A 1 3 2 6 A 1 2 2 A 1 1 2 3 A 1 0 2 1 A 9 2 4 A 8 2 5 A 7 3 A 6 4 A 5 5 A 4 6 A 3 7 A 2 8 A 1 9 A 0 1 0 C E 2 0 R / W 2 7 O E 2 2 A B 14 A B 11 A B 13 A B 5 A B 2 A B 7 A B 9 A B 12 A B 10 A B 8 A B 6 A B 4 A B 3 A B 1 A B 0 A B 1 5 U W R U R D +5 D P C C K G P 1 G P 0 +5 D R 8 2 10k NIU A B 1 5 A B 1 4 A B 1 3 A B 1 2 A B 1 1 A B 1 0 A B 9 A B 8 A B 7 P 1 7 / A B 1 5 4 1 P 1 6 / A B 1 4 4 2 P 1 5 / A B 1 3 4 3 P 1 4 / A B 1 2 4 4 P 1 3 / A B 1 1 4 5 P 1 2 / A B 1 0 4 6 P 1 1 / A B 9 4 7 P 1 0 / A B 8 4 8 P 0 7 / A B 7 4 9 P 0 6 / A B 6 P 0 5 / A B 5 P 0 4 / A B 4 P 0 3 / A B 3 P 0 2 / A B 2 P 0 1 / A B 1 P 0 0 / A B 0 P 2 7 / D B 7 P 2 6 / D B 6 P 2 5 / D B 5 P 2 4 / D B 4 P 2 3 / D B 3 P 2 2 / D B 2 P 2 1 / D B 1 P 2 0 / D B 0 P 3 7 / R D P 3 6 / W R P 3 5 / S Y N C O U T P 3 4 / P H A I O U T P 3 3 / D M A O U T P 3 0 / R D Y P 7 3 / H O L D P 7 2 / S O F P 4 2 / I N T 1 2 2 P 4 1 / I N T 0 2 3 P 4 0 / E D M A 2 4 M37640E8FP UIPC8 (80p-QFP) IC4 C 1 2 7 D 0.1 C 1 2 8 10/16 +5 D V C C 7 4 X C V R P O W E R / E X T C 7 2 V S S 7 3 D D +5 D +5 D V C C 1 6 P 8 3 / S T X D / R T S2 2 9 P 8 2 / S R X D / C T S 2 3 0 P 8 1 / S C L K / U R X D 2 3 1 P 8 0 / S R D Y / U T X D 2 3 2 P 7 5 / I B F 1 / H L D A 6 6 P 5 1 / T O U T / XC O U T 1 1 V S S 1 3 L 2 6 L 2 0 A V C C 1 7 P 8 7 / R T S 1 2 5 P 8 6 / C T S 1 2 6 P 8 5 / U R X D 1 2 7 P 8 4 / U T X D 1 2 8 P 7 1 / U S B D + 7 0 P70/USB D - 7 1 P 7 6 / O B F 1 6 5 P 6 7 / D Q 7 7 5 P 6 6 / D Q 6 7 6 P 6 5 / D Q 5 7 7 P 6 4 / D Q 4 7 8 P 6 3 / D Q 3 7 9 P 6 2 / D Q 2 8 0 P 6 1 / D Q 1 1 P 6 0 / D Q 0 2 P 5 7 / W ( R / W ) 3 P56/R(E) 4 P 5 3 / I B F 0 7 P 5 2 / O B F 0 8 P 4 4 / C N T R 1 2 0 P 4 3 / C N T R 0 2 1 P 5 0 / XC I N 1 2 A V S S 1 9 C 1 3 0 0.1 C N V S S 9 L P F 1 8 P 7 4 / S 1 6 7 P 5 5 / A 0 5 P 5 4 / S 0 6 R E S E T 1 0 X I N 1 4 X O U T 1 5 D P 8 4 P 8 5 P 8 6 P 8 7 P 8 2 P 8 3 P 8 0 P 8 1 U D P U D N C 1 3 7 1 0 p C 1 3 8 1 2 p MA-406@24.000MHz C 1 2 9 6 8 0p R 7 3 1k 1 2 3 4 5 6 7 8 9 R 8 1 1k D D 1 4 C 1 3 1 0.1(10%) +5 D R A 2 0 22k x8 X U C S 1 X W R L X R D X U C S 0 X4 D D 7 D 6 D 5 D 4 D 3 D 2 D 1 D 0 X R ST A 0 D 1 0 0 R D @ 2 0 S 1 2 1 2 D 1 0 1 R D @ 2 0 S R 7 7 15k D R 7 9 15k D D[0..15] "H-Ac tive" A[0..21] "H-Ac tive" 1MHz MAIN BOARD ASSY 6/6 (71344723) D R 7 4 33(0.5%) R 7 5 33(0.5%) L 2 1 L 2 2 U I N T 1 U I N T 0 USB Connector R 7 6 1.5k D[0..15] A[0..21] YKF45-0002 1 0 2 0 L 2 4 D Tantalum/3216 1 2 3 4 L 2 5 C 1 3 4 0.1 C 1 5 7 2.2/10 JK4 L 2 3 D A B C D E F G H J K L M N O P Q R S T U I D 1 0 0 R D @ 2 0 S 2 1 2 1 D 1 0 1 R D @ 2 0 S U D N 7 1