7220 Datasheet, PDF (14/303 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

List of figures
Fig. 5.1.10 Flowchart of CRT interrupt processing routine
(when setting multiple interrupts) .......................................................................... 5-11
Fig. 5.1.11 Flowchart of VSYNC interrupt processing routine
(when setting multiple interrupts) .......................................................................... 5-12
Fig. 5.2.1 Color register n (M37221ERSS) .............................................................................. 5-13
Fig. 5.2.2 Color register n (M37220M3-XXXSP/FP) ................................................................ 5-14
Fig. 5.2.3 Border selection register (M37220M3-XXXSP/FP) ................................................ 5-14
Fig. 5.3.1 Connection example .................................................................................................. 5-15
Fig. 5.3.2 Correction example (1) ............................................................................................. 5-15
Fig. 5.3.3 Correction example (2) ............................................................................................. 5-16
Fig. 5.3.4 E²PROM map when using ROM correction function (1) ....................................... 5-17
Fig. 5.3.5 E²PROM map when using ROM correction function (2) ....................................... 5-18
Fig. 5.3.6 General flowchart when using ROM correction function ...................................... 5-19
Fig. 5.4.1 Connection example .................................................................................................. 5-21
Fig. 5.4.2 Byte write timing ........................................................................................................ 5-22
Fig. 5.4.3 Random address read timing ................................................................................... 5-22
Fig. 5.4.4 Flowchart of write processing routine ..................................................................... 5-23
Fig. 5.4.5 Flowchart of read processing routine ...................................................................... 5-24
Fig. 5.4.6 Flowchart of data output processing routine .......................................................... 5-25
Fig. 5.5.1 Connection example .................................................................................................. 5-26
Fig. 5.5.2 Staus read timing....................................................................................................... 5-27
Fig. 5.5.3 Byte write timing ........................................................................................................ 5-27
Fig. 5.5.4 Flowchart of write processing routine ..................................................................... 5-28
Fig. 5.5.5 Flowchart of read processing routine ...................................................................... 5-29
Fig. 5.5.6 Flowchart of data output processing routine .......................................................... 5-30
Fig. 5.5.7 Flowchart of START condition processing routine ................................................ 5-31
Fig. 5.5.8 Flowchart of STOP condition processing routine .................................................. 5-31
Fig. 5.5.9 Flowchart of bus H processing routine ................................................................... 5-31
Fig. 5.5.10 Flowchart of data input processing routine .......................................................... 5-32
Fig. 5.5.11 Flowchart of return ACK processing routine ........................................................ 5-33
Fig. 5.5.12 Flowchart of return NACK processing routine ..................................................... 5-33
Fig. 5.5.13 Flowchart of power on processing ........................................................................ 5-36
Fig. 5.5.14 Flowchart of “CH UP/DOWN key” input processing............................................ 5-37
Fig. 5.5.15 Flowchart of “picture memory switching key” input processing ......................... 5-38
Fig. 5.5.16 Status data register ................................................................................................. 5-39
Fig. 5.5.17 Map of write data register ...................................................................................... 5-41
Fig. 5.6.1 Application circuit example 1 (I²C-BUS chassis) ................................................... 5-45
Fig. 5.6.2 Application circuit example 2 (Non-BUS chassis) ................................................. 5-46
CHAPTER 6. APPENDIX
Fig. 6.3.1 Initialization of flags in PS ......................................................................................... 6-4
Fig. 6.3.2 Stack contents after PHP instruction execution ...................................................... 6-4
Fig. 6.3.3 Note when executing PLP instruction ....................................................................... 6-4
Fig. 6.3.4 Note in decimal arithmetic operation ........................................................................ 6-5
Fig. 6.3.5 Execution of BBC or BBS instruction ....................................................................... 6-5
Fig. 6.3.6 Sequence for switching an external interrupt detection edge ................................ 6-6
Fig. 6.3.7 Initialization for serial I/O............................................................................................ 6-6
Fig. 6.3.8 Relation between timer values and their values read
(timer setting value = 2) .............................................................................................. 6-7
Fig. 6.3.9 Relation between timer values and their values read when two timers are
connected in series (timers 1 and 2 are connected, timer 1 setting value = 2,
timer 2 setting value = 1)............................................................................................ 6-7
viii
7220 Group User’s Manual