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7220 Datasheet(PDF) 190 Page - Renesas Technology Corp |
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7220 Datasheet(HTML) 190 Page - Renesas Technology Corp |
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190 / 303 page  APPLICATION 5.3 Usage example of ROM correction function (M37221M8/MA-XXXSP) 7220 Group User’s Manual 5-17 Fig. 5.3.4 E2PROM map when using ROM correction function (1) 5.3.3 E2PROM map Figures 5.3.4 and 5.3.5 show the E 2PROM map when using the ROM correction function. To store correction codes by using both ROM correction functions 1 and 2, the capacity of E2PROM needs to be approximately 70 bytes. E2PROM address 00016 Contents Instructions in correction program Stored data (Machine instruction) ROM correction function 1 (55H: valid, others: invalid) 55H 00116 ROM correction function 1 Execution address (high-order) E1H 00216 ROM correction function 1 Execution address (low-order) 20H 00316 ROM correction function 1 80H Correction code 1 00416 ROM correction function 1 1AH Correction code 2 00516 ROM correction function 1 8DH Correction code 3 00616 ROM correction function 1 12H Correction code 4 00716 ROM correction function 1 01H Correction code 5 00816 ROM correction function 1 1AH Correction code 6 00916 ROM correction function 1 8DH DEC A Correction code 7 00A16 ROM correction function 1 13H STA 0113H Correction code 8 00B16 ROM correction function 1 01H Correction code 9 00C16 ROM correction function 1 4CH Correction code 10 00D16 ROM correction function 1 26H JMP E126H Correction code 11 00E16 ROM correction function 1 E1H Correction code 12 00F16 ROM correction function 1 Correction code 13 01016 ROM correction function 1 EAH NOP (see note) Correction code 14 01116 ROM correction function 1 EAH NOP Correction code 15 01216 ROM correction function 1 EAH NOP Correction code 16 01316 ROM correction function 1 EAH NOP Correction code 17 01416 ROM correction function 1 EAH NOP Correction code 18 01516 ROM correction function 1 EAH NOP Correction code 19 01616 ROM correction function 1 EAH NOP Correction code 20 01716 ROM correction function 1 EAH NOP Correction code 21 01816 ROM correction function 1 EAH NOP Correction code 22 01916 ROM correction function 1 EAH NOP Correction code 23 01A16 ROM correction function 1 EAH NOP Correction code 24 01B16 ROM correction function 1 EAH NOP Correction code 25 01C16 ROM correction function 1 EAH NOP Correction code 26 01D16 ROM correction function 1 EAH NOP Correction code 27 01E16 ROM correction function 1 EAH NOP Correction code 28 01F16 ROM correction function 1 EAH NOP Correction code 29 02016 ROM correction function 1 4CH JMP YYXXH Set reset vector address to YYXXH (see note). Correction code 30 02116 ROM correction function 1 XXH Correction code 31 02216 ROM correction function 1 YYH Correction code 32 A9H STA 0112H DEC A LDA #80H Refer to “Figure 5.3.2” Note: When operating normally, this instruction is not executed. This is a redundant processing to reset during program runaway. Valid/invalid |
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