M37221M4H_15 Datasheet, PDF (4/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
TABLE OF CONTENTS
1. DESCRIPTION ............................................................... 1
2. FEATURES .................................................................... 1
3. APPLICATION ................................................................ 1
4. PIN CONFIGURATION .................................................. 3
5. FUNCTIONAL BLOCK DIAGRAM ................................. 5
6. PERFORMANCE OVERVIEW ....................................... 6
7. PIN DESCRIPTION ........................................................ 8
8. FUNCTIONAL DESCRIPTION ..................................... 12
8.1 CENTRAL PROCESSING UNIT (CPU) ......... 12
8.2 MEMORY ....................................................... 13
8.3 INTERRUPTS ................................................ 19
8.4 TIMERS .......................................................... 24
8.5 SERIAL I/O ..................................................... 27
8.6 MULTI-MASTER I²C-BUS INTERFACE ........ 31
8.7 PWM OUTPUT FUNCTION ........................... 44
8.8 A-D COMPARATOR ....................................... 49
8.9 D-A CONVERTER .......................................... 51
8.10 ROM CORRECTION FUNCTION ................ 53
8.11 OSD FUNCTIONS ........................................ 54
8.11.1 Display Position .............................. 58
8.11.2 Character Size ................................ 62
8.11.3 Clock for OSD ................................. 64
8.11.4 Memory for OSD ............................. 65
8.11.5 Color Register ................................. 68
8.11.6 Border ............................................. 70
8.11.7 Multiline Display .............................. 71
8.11.8 OSD Output Pin Control ................. 72
8.11.9 Raster Coloring Function ................ 73
8.12 SOFTWARE RUNAWAY DETECT FUNCTION ... 74
8.13 RESET CIRCUIT .......................................... 75
8.14 CLOCK GENERATING CIRCUIT ................. 76
8.15 DISPLAY OSCILLATION CIRCUIT .............. 77
8.16 AUTO-CLEAR CIRCUIT ............................... 77
8.17 ADDRESSING MODE .................................. 77
8.18 MACHINE INSTRUCTIONS ......................... 77
9. PROGRAMMING NOTES ............................................ 77
10. ABSOLUTE MAXIMUM RATINGS ............................. 78
11. RECOMMENDED OPERATING CONDITIONS ......... 78
12. ELECTRIC CHARACTERISTICS .............................. 79
13. A-D COMPARISON CHARACTERISTICS ................. 81
14. D-A CONVERSION CHARACTERISTICS ................. 81
15. MULTI-MASTER I²C-BUS BUS LINE CHARACTERISTICS .... 81
16. PROM PROGRAMMING METHOD ........................... 82
17. DATA REQUIRED FOR MASK ORDERS .................. 83
18. ONE TIME PROM VERSION M37221EASP/FP MARKING ..... 84
19. APPENDIX ................................................................. 85
20. PACKAGE OUTLINE ................................................ 110
Rev.1.00 Oct 01, 2002 page 2 of 110
REJ03B0134-0100Z