Maxim-integrated High-Speed Microcontroller User Manual download pdf (Page 152)

High-Speed Microcontroller User’s Guide

Rev: 062210 152 of 176

The multiprocessor communication is always enabled. However, the SADEN registers default to 00h,

which means all address bits are don’t care, so all match. Thus, if no multiprocessor communication is

used, these registers can be ignored.

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 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
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Figure 4-2. Register Map 16
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4.2.1 Port 0 (P0) 25
4.2.2 Stack Pointer (SP) 25
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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
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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
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4.2.45 B Register (B) 52
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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
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5.6 Instruction Timing 64
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Memory Access 66
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22h 68
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5.7 Comparison to the 8051 71
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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
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6.5 Data Memory Access 81
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6.6 Data Memory Timing 84
CKCON.2–0 85
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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
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7.1.5 Watchdog Wake-Up 91
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7.2 Power Conservation 93
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7.3 Power Management Modes 95
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7.3.3 Switchback 98
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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
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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
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12. SERIAL I/O 136
12.1 Serial Mode Summary 136
12.1.3 Mode 2 137
12.1.4 Mode 3 137
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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
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RECEIVE TIMING 146
TRANSMIT TIMING 146
12.4.3 Mode 2 147
REGISTER 148
12.4.4 Mode 3 149
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SADDR 11110000 151
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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
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2010 Maxim Integrated 176

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