Mitsubishi DS5000TK Podręcznik Użytkownika Strona 54
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USER’S GUIDE
050396 53/173
54
DS2251T–128 BLOCK DIAGRAM Figure 5–6
DS2251T
DS5001FP 128K X 8 SRAM
REAL TIME CLOCK
BYTE–WIDE ADDRESS BUS
BYTE–WIDE DATA BUS
(14)
(8)
(8)
(8)
(8)
(8)
R/W
INTA
INTB
INTP
SQW
+3V
V
LI
V
CC
PORT0
PORT1
PORT2
PORT3
ALE
RST
PSEN
PROG
PF
VRST
PE3
PE4
XTAL1
XTAL2
GND
V
CCO
ADDR
R/W
DATA
CE1
PE1
72 PINS
DS1283
- TABLE OF CONTENTS 1
- SECTION 1: INTRODUCTION 2
- SOFTWARE SECURITY 2
- SEPARATE ADDRESS/DATA BUS 2
- LARGE NONVOLATILE MEMORY 3
- IN–SYSTEM LOADING 3
- HIGH RELIABILITY OPERATION 3
- PRODUCT DESCRIPTION 4
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- SECTION 2: SELECTION GUIDE 6
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- INTERNAL DATA BUS 8
- INTERNAL ADDRESS BUS 8
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- Watchdog Timer 10
- Resident Loader ROM 10
- Secure Microcontroller Memory 11
- Organization 11
- Internal Registers 11
- Programmer’s note 12
- Program and Data Memory 13
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- DS5000 Memory Map Control 16
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- DS5001/DS5002 Memory Mapped 20
- Peripherals 20
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- Special Function Registers 28
- PA3 PA2 PA1 PA0 RA32/8 ECE2 29
- POWER CONTROL REGISTER 31
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- TIMER CONTROL REGISTER 33
- TIMER MODE REGISTER 34
- SERIAL CONTROL REGISTER 35
- INTERRUPT ENABLE REGISTER 36
- INTERRUPT PRIORITY REGISTER 37
- DS5001 CRC REGISTER 38
- DS5001 MCON REGISTER 40
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- PROGRAM STATUS WORD REGISTER 42
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- INSTRUCTION SET 46
- Introduction 46
- Addressing Modes 46
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- Program Status Flags 48
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- DATA RETENTION 56
- BATTERY BACKED CIRCUITS 56
- BATTERY ATTACH PROCEDURE 57
- BATTERY LIFETIME 57
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- LITHIUM BATTERY USAGE 59
- FRESHNESS SEAL 59
- SECTION 7: POWER MANAGEMENT 60
- Idle Mode 60
- Stop Mode 61
- Voltage Monitoring Circuitry 62
- Power Fail Interrupt 63
- Total Power Failure 63
- Partial Power Failures 63
- SECTION 8: SOFTWARE CONTROL 65
- Timed Access 65
- TIMED ACCESS Figure 8–1 65
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- WATCHDOG TIMER Figure 8–2 68
- WATCHDOG TIMER CONTROL BITS 69
- CRC MEMORY VERIFICATION 69
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- CRC CODE EXAMPLE Figure 8–3 71
- SECTION 9: FIRMWARE SECURITY 72
- SECURITY OVERVIEW 72
- SECURITY LOCK 73
- RAM Memory 73
- Encrypted Memory 73
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- Encryption Algorithm 76
- Encryption Key 76
- Dummy Bus Access 77
- On–chip Vector RAM 78
- Self–Destruct Input 78
- Microprobe/Die Top Coating 78
- Random Number Generator 78
- Security Summary by Part 79
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- Change Code 81
- External Circuits 81
- Tamper Protection 81
- SECTION 10: RESET CONDITIONS 82
- Reset Sources 82
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- Power On Reset 84
- Power On Reset 85
- External Reset 85
- Watchdog Timer Reset 85
- Memory Map 86
- Interrupts 87
- Protection 88
- SECTION 11: INTERRUPTS 89
- INTERRUPT SOURCES 89
- External Interrupts 90
- Timer Interrupts 90
- Serial Port Interrupts 90
- Power–fail Warning Interrupt 90
- Simulated Interrupts 91
- INTERRUPT PRIORITIES 93
- INTERRUPT ACKNOWLEDGE 94
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- SECTION 12: PARALLEL I/O 96
- OVERVIEW 96
- PORT 1 FUNCTIONAL CIRCUITRY 97
- PORT 2 FUNCTIONAL CIRCUITRY 97
- PORT 3 FUNCTIONAL CIRCUITRY 98
- OUTPUT FUNCTIONS 98
- INPUT FUNCTION 99
- REPROGRAMMABLE PERIPHERAL 100
- CONTROLLER (RPC) 100
- RPC INTERRUPTS 101
- Bit Description: 102
- RPC PROTOCOL 103
- DMA OPERATION 103
- FUNCTIONAL DESCRIPTION 105
- Bit Description 105
- USER’S GUIDE 106
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- SECTION 14: SERIAL I/O 110
- FUNCTION DESCRIPTION 110
- SCON.2: RB8 112
- SCON.1: TI 112
- SCON.0: RI 112
- BAUD RATE GENERATION 112
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- 050396 113/173 114
- TRANSMIT TIMING: 115
- RECEIVE TIMING: 115
- ASYNCHRONOUS OPERATION 116
- Mode 2 and 3 117
- APPLICATION: SERIAL PORT 120
- INITIALIZATION 120
- SERIAL I/O OPERATING MODES 120
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- 050396 121/173 122
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- SECTION 15: CPU TIMING 124
- OSCILLATOR 124
- INSTRUCTION TIMING 125
- EXPANDED DATA MEMORY TIMING 129
- SECTION 16: PROGRAM LOADING 130
- INTRODUCTION 130
- INVOKING THE BOOTSTRAP LOADER 130
- DS5000 Series 131
- DS5001/DS5002 Series 131
- EXITING THE LOADER 131
- SERIAL PROGRAM LOAD MODE 133
- AUTO–BAUD RATE DETECTION 134
- COMMAND LINE INTERFACE 135
- COMMAND LINE SYNTAX 135
- COMMAND SUMMARIES 136
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- Xon/Xoff 138
- DS5002FP COMMANDS 138
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- INTEL HEX FILE FORMAT 140
- PARALLEL PROGRAM LOAD MODE 142
- PARALLEL PROGRAMMING CONCERNS 143
- RPC PROGRAM MODE OPERATION 143
- SECTION 17: REAL–TIME CLOCK 144
- DS1215 PHANTOM TIME CHIP 144
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- REGISTERS 148
- SPECIAL BITS 148
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- MEMORY MAP 151
- TIME–OF–DAY ALARM 152
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- DS1283 RTC INTERRUPTS 154
- (DS1215 EXAMPLE) 155
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- (DS1283 EXAMPLE) 159
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- SECTION 18: TROUBLESHOOTING 164
- UNEXPLAINED DEVICE RESETS 164
- WRONG TIME 164
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- OGRAM BRANCHING 174
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