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M37540M2V-XXXGP Datasheet(PDF) 8 Page - Renesas Technology Corp |
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M37540M2V-XXXGP Datasheet(HTML) 8 Page - Renesas Technology Corp |
8 / 366 page iii 7540 Group Table of contents 2.9 Oscillation control ............................................................................................................. 2-135 2.9.1 Memory map ............................................................................................................... 2-135 2.9.2 Relevant registers ...................................................................................................... 2-135 2.9.3 Application example of on-chip oscillator ............................................................... 2-137 2.9.4 Oscillation stop detection circuit .............................................................................. 2-139 2.9.5 State transition ........................................................................................................... 2-142 2.9.6 Notes on oscillation stop detection circuit .............................................................. 2-145 CHAPTER 3 APPENDIX 3.1 Electrical characteristics ..................................................................................................... 3-2 3.1.1 7540 Group (General purpose) .................................................................................... 3-2 3.1.2 7540Group (Extended operating temperature version) ........................................... 3-13 3.1.3 7540Group (Extended operating temperature 125 °C version) ............................. 3-22 3.2 Typical characteristics ....................................................................................................... 3-31 3.2.1 Mask ROM version ...................................................................................................... 3-31 3.2.2 One Time PROM version ............................................................................................ 3-52 3.3 Notes on use ........................................................................................................................ 3-73 3.3.1 Notes on input and output ports ................................................................................ 3-73 3.3.2 Termination of unused pins ........................................................................................ 3-74 3.3.3 Notes on Timer ............................................................................................................. 3-75 3.3.4 Notes on Timer A ........................................................................................................ 3-75 3.3.5 Notes on timer 1 .......................................................................................................... 3-75 3.3.6 Notes on Timer X ........................................................................................................ 3-76 3.3.7 Notes on timer Y and timer Z .................................................................................... 3-77 3.3.8 Notes on Serial I/O1 .................................................................................................... 3-79 3.3.9 Notes on serial I/O2 .................................................................................................... 3-81 3.3.10 Notes on A/D converter ............................................................................................ 3-82 3.3.11 Notes on oscillation stop detection circuit .............................................................. 3-83 3.3.12 Notes on CPU mode register ................................................................................... 3-85 3.3.13 Notes on interrupts .................................................................................................... 3-86 3.3.14 Notes on RESET pin ................................................................................................. 3-87 3.3.15 Notes on programming .............................................................................................. 3-88 3.3.16 Programming and test of built-in PROM version ................................................... 3-90 3.3.17 Handling of Power Source Pin ................................................................................. 3-90 3.3.18 Notes on built-in PROM version .............................................................................. 3-91 3.3.19 Notes on Power Source Voltage ............................................................................. 3-91 3.3.20 Electric Characteristic Differences Among Mask ROM and One Time PROM Version MCUs .... 3-91 3.4 Countermeasures against noise ...................................................................................... 3-92 3.4.1 Shortest wiring length .................................................................................................. 3-92 3.4.2 Connection of bypass capacitor across VSS line and VCC line ............................... 3-94 3.4.3 Wiring to analog input pins ........................................................................................ 3-95 3.4.4 Oscillator concerns ....................................................................................................... 3-95 3.4.5 Setup for I/O ports ....................................................................................................... 3-96 3.4.6 Providing of watchdog timer function by software .................................................. 3-97 3.5 List of registers ................................................................................................................... 3-98 3.6 Package outline ................................................................................................................. 3-120 3.7 Machine instructions ........................................................................................................ 3-122 3.8 List of instruction code ................................................................................................... 3-133 3.9 SFR memory map .............................................................................................................. 3-134 3.10 Pin configurations ........................................................................................................... 3-135 3.11 Differences between 7540 Group and 7531 Group ................................................. 3-139 |
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