Maxim-integrated High-Speed Microcontroller User Manual download pdf (Page 80)

High-Speed Microcontroller User’s Guide

Rev: 062210 80 of 176

Figure 6-1. Program Memory Interface

Figure 6-2. Program Memory Signals

DS80C320

PSEN

LE CK

74F373

LATCH

LBS ADDRESS

DATA BUS

MSB ADDRESS

PORT 2

(

)

(

)

27C256

32kB X 8

EPROM

(

)

DATA

PORT 0

ALE

PSEN

PORT 2

TAL1

LSB

ADDR

SINGLE CYCLE

MSB

DDRESS

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 175 176

TABLE OF CONTENTS 2
LIST OF FIGURES 7
LIST OF TABLES 8
1. INTRODUCTION 9
2. ORDERING INFORMATION 10
3. ARCHITECTURE 11
3.1 ALU 11
Rev: 062210 12 of 176 12
3.2.16 Interrupts 13
3.2.17 Timing Control 13
3.2.18 Real-Time Clock 13
3.2.19 Feature Summary 13
4. PROGRAMMING MODEL 14
4.1 Memory Organization 14
Rev: 062210 15 of 176 15
Figure 4-2. Register Map 16
Rev: 062210 17 of 176 17
Rev: 062210 18 of 176 18
Rev: 062210 19 of 176 19
Rev: 062210 20 of 176 20
Rev: 062210 21 of 176 21
Rev: 062210 22 of 176 22
Rev: 062210 23 of 176 23
Rev: 062210 24 of 176 24
4.2.1 Port 0 (P0) 25
4.2.2 Stack Pointer (SP) 25
Rev: 062210 26 of 176 26
4.2.8 Power Control (PCON) 27
INT1 pin 28
INT0 is level triggered 28
Rev: 062210 29 of 176 29
4.2.11 Timer 0 LSB (TL0) 30
4.2.12 Timer 1 LSB (TL1) 30
4.2.13 Timer 0 MSB (TH0) 30
4.2.14 Timer 1 MSB (TH1) 30
Rev: 062210 31 of 176 31
4.2.16 Port 1 (P1) 32
RG bit 33
Rev: 062210 34 of 176 34
4.2.21 Port 2 (P2) 36
7 6 5 4 3 2 1 0 37
4.2.25 Port 3 (P3) 38
Rev: 062210 41 of 176 41
RMS2, RMS1 42
DME1, DME0 44
LB3, LB2, LB1 44
Rev: 062210 45 of 176 45
CP/RL2 EXEN2 DCEN RESULT 46
4.2.36 Timer 2 Mode (T2MOD) 47
4.2.39 Timer 2 LSB (TL2) 48
4.2.40 Timer 2 MSB (TH2) 48
Rev: 062210 49 of 176 49
Rev: 062210 51 of 176 51
4.2.45 B Register (B) 52
Rev: 062210 53 of 176 53
Rev: 062210 54 of 176 54
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Rev: 062210 57 of 176 57
4.3 Instruction Timing 58
4.4 Addressing Modes 59
4.4.2 Direct Addressing 60
4.4.4 Immediate Addressing 61
4.4.6 Relative Addressing 61
4.4.7 Page Addressing 61
4.5 Program Status Flags 62
Rev: 062210 63 of 176 63
5.6 Instruction Timing 64
Rev: 062210 65 of 176 65
Memory Access 66
Rev: 062210 67 of 176 67
22h 68
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Rev: 062210 70 of 176 70
5.7 Comparison to the 8051 71
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Rev: 062210 75 of 176 75
6. MEMORY ACCESS 76
6.1 Internal Program Memory 76
6.2 Internal Data Memory 76
6.2.1 ROMSIZE Feature 77
RMS2 RMS1 RMS0 78
MAX ON-CHIP ROM 78
Rev: 062210 79 of 176 79
Rev: 062210 80 of 176 80
6.5 Data Memory Access 81
Rev: 062210 82 of 176 82
Rev: 062210 83 of 176 83
6.6 Data Memory Timing 84
CKCON.2–0 85
Rev: 062210 86 of 176 86
C1 C2 C3 C4 87
7. POWER MANAGEMENT 88
Precision Voltage Monitor 88
7.1.2 Power-Fail Reset 89
7.1.3 Power-On Reset 89
7.1.4 Bandgap Select 89
Rev: 062210 90 of 176 90
7.1.5 Watchdog Wake-Up 91
Rev: 062210 92 of 176 92
7.2 Power Conservation 93
Rev: 062210 94 of 176 94
7.3 Power Management Modes 95
Rev: 062210 96 of 176 96
Rev: 062210 97 of 176 97
7.3.3 Switchback 98
Rev: 062210 99 of 176 99
Rev: 062210 100 of 176 100
RG bit. The procedure to 101
8. RESET CONDITIONS 102
8.1 Reset Sources 102
8.2 Reset State 103
8.3 No-Battery Reset 103
8.4 In-System Disable Mode 104
9.1 Interrupt Overview 105
9. INTERRUPTS 105
9.2 Interrupt Sources 106
9.2.2 Timer Interrupts 107
9.2.4 Real-Time Clock 107
9.2.5 Power-Fail Interrupt 107
9.3 Simulated Interrupts 108
9.4 Interrupt Priorities 108
9.6 Interrupt Latency 109
Rev: 062210 110 of 176 110
Rev: 062210 111 of 176 111
10. PARALLEL I/O 112
10.1 Port 0 112
10.2 Port 2 113
10.3 Ports 1 and 3 114
10.4 Output Functions 115
10.6 Input Functions 115
10.9 I/O Port Timing 116
10.10 Optional Functions 117
11. PROGRAMMABLE TIMERS 118
11.1 16-Bit Timers 118
INT1 and TR1 = 119
11.2 Mode 0 120
11.3 Mode 1 121
11.4 Mode 2 122
11.5 Mode 3 123
11.6 Timer 2 124
Rev: 062210 125 of 176 125
11.7 Timer 2 Modes 126
T2 = 1. As 127
TIMER 2 128
INTERRUPT 128
T2CON.7 128
11.7.5 Baud-Rate Generator 129
RL2 = 0 130
11.8 Time Base Selection 131
11.9 Watchdog Timer 132
Rev: 062210 133 of 176 133
Rev: 062210 134 of 176 134
Rev: 062210 135 of 176 135
12. SERIAL I/O 136
12.1 Serial Mode Summary 136
12.1.3 Mode 2 137
12.1.4 Mode 3 137
Rev: 062210 138 of 176 138
Rev: 062210 139 of 176 139
12.3 Baud Rates 140
12.3.2 Mode 2 141
12.3.3 Mode 1 or 3 141
12.4 Serial I/O Description 143
12.4.2 Mode 1 145
Rev: 062210 146 of 176 146
RECEIVE TIMING 146
TRANSMIT TIMING 146
12.4.3 Mode 2 147
REGISTER 148
12.4.4 Mode 3 149
Rev: 062210 150 of 176 150
SADDR 11110000 151
Rev: 062210 152 of 176 152
13. TIMED-ACCESS PROTECTION 153
13.1 Protected Bits 153
13.2 Protection Scheme 153
TABLE_READ: 155
14. REAL-TIME CLOCK 156
14.3 Using the RTC Alarm 158
TRMx bits must be 160
15. BATTERY BACKUP 161
15.1 Selecting a Battery 161
REGISTER NAME LOCATION 162
16. INSTRUCTION SET DETAILS 163
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MNEMONIC 165
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171 of 176 171
17. TROUBLESHOOTING 172
18.1 Technical Support 174
18.2 Development Tools 174
18.3 Software Compatibility 174
Rev: 062210 175 of 176 175
2010 Maxim Integrated 176

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Maxim-integrated High-Speed Microcontroller User Manual Page 80

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