Maxim Integrated High-Speed Microcontroller - Manual (Page 2)

High-Speed Microcontroller User’s Guide
Rev: 062210 2 of 176
TABLE OF CONTENTS
1. INTRODUCTION..............................................................................................................9
2. ORDERING INFORMATION..........................................................................................10
3. ARCHITECTURE...........................................................................................................11
3.1 ALU.............................................................................................................................................. 11
3.2 S PECIAL F UNCTION R EGISTERS (SFR S ).........................................................................................11
3.2.1 Accumulator ......................................................................................................................................... 11
3.2.2 B Register ............................................................................................................................................ 11
3.2.3 Program Status Word........................................................................................................................... 11
3.2.4 Data Pointer(s) ..................................................................................................................................... 11
3.2.5 Stack Pointer........................................................................................................................................ 11
3.2.6 I/O Ports ............................................................................................................................................... 11
3.2.7 Timer/Counters .................................................................................................................................... 12
3.2.8 UARTs.................................................................................................................................................. 12
3.2.9 Scratchpad Registers (RAM) ............................................................................................................... 12
3.2.10 Stack .................................................................................................................................................... 12
3.2.11 Working Registers................................................................................................................................ 12
3.2.12 Program Counter.................................................................................................................................. 12
3.2.13 Address/Data Bus ................................................................................................................................ 12
3.2.14 Watchdog Timer................................................................................................................................... 12
3.2.15 Power Monitor ...................................................................................................................................... 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 M EMORY O RGANIZATION ...............................................................................................................14
4.1.1 Memory Map ........................................................................................................................................ 14
4.1.2 Register Map........................................................................................................................................ 14
4.2 S PECIAL F UNCTION R EGISTERS .....................................................................................................17
4.2.1 Port 0 (P0)............................................................................................................................................ 25
4.2.2 Stack Pointer (SP)................................................................................................................................ 25
4.2.3 Data Pointer Low 0 (DPL) .................................................................................................................... 26
4.2.4 Data Pointer High 0 (DPH)................................................................................................................... 26
4.2.5 Data Pointer Low 1 (DPL1) .................................................................................................................. 26
4.2.6 Data Pointer High 1 (DPH1)................................................................................................................. 26
4.2.7 Data Pointer Select (DPS) ................................................................................................................... 27
4.2.8 Power Control (PCON)......................................................................................................................... 27
4.2.9 Timer/Counter Control (TCON)............................................................................................................ 28
4.2.10 Timer Mode Control (TMOD) ............................................................................................................... 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
4.2.15 Clock Control (CKCON) ....................................................................................................................... 31
4.2.16 Port 1 (P1)............................................................................................................................................ 32
4.2.17 External Interrupt Flag (EXIF) .............................................................................................................. 33
4.2.18 RTC Trim Register (TRIM) ................................................................................................................... 34
4.2.19 Serial Port 0 Control (SCON0)............................................................................................................. 35
4.2.20 Serial Data Buffer 0 (SBUF0)............................................................................................................... 36
4.2.21 Port 2 (P2)............................................................................................................................................ 36
4.2.22 Interrupt Enable (IE)............................................................................................................................. 37
4.2.23 Slave Address Register 0 (SADDR0) .................................................................................................. 37
4.2.24 Slave Address Register 1 (SADDR1) .................................................................................................. 38
4.2.25 Port 3 (P3)............................................................................................................................................ 38