View hd6475368rf10 datasheet:

HD6475368RF10 (1/7) IL08 ********** C-MOS 16-BIT MICRO COMPUTER UNIT -TOP VIEW- (+ ) 1 AVDD 5V 60 (+ ) 5 VDD 5V 55 10 AGND 50 GND 15 45 (+ ) VCC 5V 20 41 80 75 70 65 61 GND GND 21 25 30 35 40 HD6475368F10 (7/7) PORT 1 PORT 2 PORT 3 ADDRESS BUS 69 EXTAL 28 CLOCK DATA BUS (HIGH ORDER) P47/A7 70 OSC 27 XTAL DATA BUS (LOW ORDER) P46/A6 26 P45/A5 25 P44/A4 10 24 RES WAIT P43/A3 9 RAM PROM/MASK ROM 23 STBY STATE P42/A2 2K-BYTE 62K-BYTE 6 CONTROLLER 22 MD0 P41/A1 7 MD1 21 8 P40/A0 MD2 INTERRUPT CONTROLLER CPU DATA 37 P57/A15 TRANSFER 36 CONTROLLER P56/A14 35 11 NMI P55/A13 34 P54/A12 SERIAL 33 P53/A11 COMMUNICATION 8-BIT 32 INTERFACE TIMER P52/A10 31 (x 2CH) P51/A9 30 P50/A8 16-BIT FRE