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ST72T2511R6T3S Datasheet(PDF) 2 Page - STMicroelectronics |
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ST72T2511R6T3S Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 164 page Table of Contents 164 2/164 2 1 GENERAL DESCRIPTION . . . . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . . . . . . 6 1.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... . 6 1.2 PIN DESCRIPTION . . . . . . .... . ... .. . . . . .... . ... .. . . ... .. . . . . . . ... .. . . ... . 7 1.3 REGISTER & MEMORY MAP . . . . . . . . . . . . . . . . . . .... . ... ... . . . . . . . . ... .. .. . 11 2 EPROM PROGRAM MEMORY . . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . . . . ... .. 15 3 DATA EEPROM . . . . . . . . . .... . . . . .. . . . . . . . . . . . . . ... ... . . . . . . . . . . . . ... .. . . . . . . 16 3.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... 16 3.2 MAIN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... .... .. . . . . . . . . . . 16 3.3 MEMORY ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . ... 17 3.4 POWER SAVING MODES . . . . . . .... .. . .... . ... .. .. .. .... . . . ... . . . . . . . . . . 18 3.5 ACCESS ERROR HANDLING . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . . 18 3.6 REGISTER DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . ... 19 4 CENTRAL PROCESSING UNIT . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . . . . . 20 4.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... 20 4.2 MAIN FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... .... .. . . . . . . . . . . 20 4.3 CPU REGISTERS . . . . . . . . . . . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . . 20 5 SUPPLY, RESET AND CLOCK MANAGEMENT . . . . .... ... . . . . . . . . . . . . . . . . . . . . ... .. 23 5.1 LOW VOLTAGE DETECTOR (LVD) . . . . . . . . .... ... . . . . . . . . . . . . . . . . . . . . ... .. 24 5.2 RESET SEQUENCE MANAGER (RSM) . . . . . .... ... . . . . . . . . . . . . . . . . . .. . ... .. 25 5.2.1 Introduction . . . . . . . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . . . . ... .. 25 5.2.2 Asynchronous External RESET pin . . . .... .... .. . . . . . . . . . . . . . ... .. . .... 26 5.2.3 Internal Low Voltage Detection RESET . . . . . . . . . . . . . . . . . . . . . . .... . . ... .. 26 5.2.4 Internal Watchdog RESET . . . . . . ... . . . . . . . . . ... .. .. ... .. .. .... . . ... .. 26 5.3 LOW CONSUMPTION OSCILLATOR . . . . . .... . ... .. .. .. .... . . . ... . . . . . . . . . . 27 6 INTERRUPTS . . .... .. . . . . . . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . . . . . 28 6.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... 28 6.2 MASKING AND PROCESSING FLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.3 INTERRUPTS AND LOW POWER MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 6.4 CONCURRENT & NESTED MANAGEMENT . . . . . . . . . . . . . .... . . . ... . . . . . . . . . . 30 6.5 INTERRUPT REGISTER DESCRIPTION . . . .... .... .. . . . . . . . . . . . . . ... .. . .... 31 7 POWER SAVING MODES . . . . . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . .. . ... .. 34 7.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... 34 7.2 SLOW MODE . . . . . . . . . . . . . . .... . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 34 7.3 WAIT MODE . . . . . . . . . . . .... . ... .. . . ... ... . ... .. . . ... .. . . ... . ... .. .. ... 35 7.4 ACTIVE-HALT AND HALT MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7.4.1 ACTIVE-HALT MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7.4.2 HALT MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 8 I/O PORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . ... .. ... .. .. ... .. . ... .. . . ... . . 38 8.1 INTRODUCTION . .... .. . .... . ... .. .. ... ... . . . . . . . . ... .. . . ... . ... . . . . ... 38 8.2 FUNCTIONAL DESCRIPTION . . . . . . . ... . . . . . . . . . ... .. .. ... .. . ... .. . . ... .. 38 8.2.1 Input Modes . . .... . . . . .. . . . . . . . . . . . . . ... ... . . . . . . . . . . ... .. .. . . . . . . 38 8.2.2 Output Modes . . . . . . . . . . . . . . . . ... . . . . . . . . . ... .. .. ... .. .. . . .. . . ... .. 38 8.2.3 Alternate Functions . . . . . . .... . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 38 |
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