
2
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37280MF–XXXSP, M37280MK–XXXSP
M37280EKSP
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
Rev. 1.0
TABLE OF CONTENTS
8. PIN CONFIGURATION ................................................................................................................................................................................... 3
9. FUNCTIONAL BLOCK DIAGRAM .................................................................................................................................................................. 4
10. PERFORMANCE OVERVIEW...................................................................................................................................................................... 5
11. PIN DESCRIPTION....................................................................................................................................................................................... 7
12. FUNCTIONAL DESCRIPTION.................................................................................................................................................................... 12
12.1 CENTRAL PROCESSING UNIT (CPU) ........................................................................................................................................... 12
12.2 MEMORY ......................................................................................................................................................................................... 13
12.3 INTERRUPTS .................................................................................................................................................................................. 21
12.4 TIMERS............................................................................................................................................................................................ 26
12.5 SERIAL I/O....................................................................................................................................................................................... 30
12.6 MULTI-MASTER I
2
C-BUS INTERFACE .......................................................................................................................................... 33
12.7 PWM OUTPUT CIRCUIT ................................................................................................................................................................. 46
12.8 A-D CONVERTER............................................................................................................................................................................ 50
12.9 ROM CORRECTION FUNCTION .................................................................................................................................................... 54
12.10 DATA SLICER ................................................................................................................................................................................ 55
12.11 OSD FUNCTIONS.......................................................................................................................................................................... 66
13. SOFTWARE RUNAWAY DETECT FUNCTION .........................................................................................................................................117
14. RESET CIRCUIT........................................................................................................................................................................................118
15. CLOCK GENERATING CIRCUIT...............................................................................................................................................................119
15.1 OSCILLATION CONTROL ..............................................................................................................................................................119
16. DISPLAY OSCILLATION CIRCUIT ........................................................................................................................................................... 122
17. AUTO-CLEAR CIRCUIT............................................................................................................................................................................ 122
18. ADDRESSING MODE............................................................................................................................................................................... 122
19. MACHINE INSTRUCTIONS ..................................................................................................................................................................... 122
20. PROGRAMMING NOTES......................................................................................................................................................................... 122
21. ABSOLUTE MAXIMUM RATINGS ............................................................................................................................................................ 123
22. RECOMMENDED OPERATING CONDITIONS........................................................................................................................................ 123
23. ELECTRIC CHARACTERISTICS ............................................................................................................................................................. 124
24. ANALOG R, G, B OUTPUT CHARACTERISTICS .................................................................................................................................... 126
25. A-D CONVERETER CHARACTERISTICS ............................................................................................................................................... 126
26. MULTI-MASTER I
2
C-BUS BUS LINE CHARACTERISTICS .................................................................................................................... 127
27. DATA REQUIRED FOR MASK ORDERS ................................................................................................................................................. 128
28. PROM PROGRAMMING METHOD.......................................................................................................................................................... 128
29. MASK CONFIRMATION FORM................................................................................................................................................................ 129
30. MARK SPECIFICATION FORM................................................................................................................................................................ 135
31. APPENDIX ................................................................................................................................................................................................ 136
32. PACKAGE OUTLINE ................................................................................................................................................................................ 176