HOLTEK HT85F2280 8051 MCU Manuals

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HOLTEK HT85F2280 Manual

HOLTEK HT85F2280 Manual (225 pages)

Standard 8051 8-Bit Flash MCU

Brand: HOLTEK | Category: Microcontrollers | Size: 3 MB

Table of Contents

Standard 8051 8-Bit Flash Mcu Ht85F2260 Ht85F2270 Ht85F2280

2
- Table of Contents
  2
List of Tables

8
Table of Contents

13
- 1 Features
  
  14
  - CPU Feat
    14
- 2 General Description
  
  16
- 3 Selection Table
  
  17
- 4 Block Diagram
  
  18
- 5 Pin Assignment
  
  19
  - Gene�Al P��Pose I/O. Registe� Selected I/O Mode and Wake-�P
    20
- 6 Pin Descriptions
  
  20
  - Compa�Ato� 0
    22
  - Compa�Ato� 1
    22
- 7 Absolute Maximum Ratings
  
  23
- 8 C. Characteristics
  
  23
- 10 ADC Electrical Characteristics
  
  26
- 11 DAC Electrical Characteristics
  
  26
- 12 Comparator Electrical Characteristics
  
  27
- 13 Power on Reset Electrical Characteristics
  
  28
- 14 System Architecture
  
  28
- 15 Program Counter
  
  29
- 16 Stack
  
  29
- 17 Arithmetic and Logic Unit - ALU
  
  30
- 18 Flash Program Memory
  
  31
  - Special Vecto�S
    31
  - On-Chip Deb�G S�Ppo�T - OCDS
    32
  - Flash Memo�� Is in
    37
    
    Unlocking the Flash Memo
    37
    
    Page E�Ase Ope�Ation
    38
    
    Memo
    42
- 19 RAM Data Memory
  
  46
  - Bit Add�Essable Space
    47
  - Special F�Nction Registe�S
    47
    
    B Registe
    53
    
    SP Registe� - Stack Pointe
    53
    
    Data Pointe� Select Registe
    54
    
    Data Pointe� Cont�Ol Registe
    54
- 20 Oscillators
  
  57
  - System Clock Configuration
    57
    
    Exte�Nal High Speed C��Stal
    57
    
    Exte�Nal Low Speed C��Stal
    57
- 21 Operating Modes and System Clocks
  
  60
  - S�Stem Clocks Desc�Iption
    60
  - Phase Locked Loop - PLL
    64
    
    Changing the PLL F�Eq�Enc
    64
    
    NORMAL Mode
    66
    
    IDLE Mode
    66
- 22 Watchdog Timer
  
  69
  - IEN0 Registe
    70
  - IEN1 Registe
    71
  - WDTREL Registe
    71
  - IP0 Registe
    72
  - WDTCR Registe
    72
- 23 Low Voltage Detector - LVD
  
  75
  - LVD Registe
    75
  - LVD Ope�Ation
    75
  - LVDCR Registe
    75
- 24 Reset and Initialisation
  
  76
  - Reset Ove�View
    76
    
    Reset so
    76
    
    Powe�-On Reset
    76
  - RSTSRC Registe
    77
    
    RESET Pin Reset
    79
    
    Low Voltage Reset - LVR
    80
  - LVRCR Registe
    80
    
    Watchdog Reset
    81
    
    Compa�Ato� 0 Reset
    82
    
    SRST Registe� Softwa�E Reset
    83
  - SRST Registe
    83
  - LVRCR Registe
    84
    
    ROM Code Check Reset
    85
    
    Reset Initial Conditions
    85
  - WDTCR Registe
    84
- 25 Interrupts
  
  91
  - Inte
    92
  - IEN3 Registe
    94
  - IRCON Registe
    95
  - S0CON Registe
    97
  - S1CON Registe
    98
  - TCON Registe
    99
  - T3CON Registe
    100
  - SPSTA Registe
    101
  - CPICR Registe
    102
    
    Inte
    104
  - Time� 1
    104
    
    Inte
    107
    
    Exte�Nal Inte
    107
    
    Compa�Ato� Inte
    107
  - TBCR Registe
    114
  - P0 Registe
    118
  - P1 Registe
    118
  - P3 Registe
    119
  - P4 Registe
    119
  - P0M0 Registe
    120
  - P0M1 Registe
    120
  - P1M0 Registe
    120
  - P1M1 Registe
    120
  - P3M0 Registe
    121
  - P3M1 Registe
    121
  - P0WAKE Registe
    122
  - SRCR Registe
    122
  - Time
    128
  - TL0 Registe
    128
  - TH0 Registe
    129
  - TL1 Registe
    129
  - TH1 Registe
    130
  - TL3 Registe
    130
  - TH3 Registe
    131
  - TMOD Registe
    131
  - TMPRE Registe
    134
  - CCEN Registe
    142
  - Sec
    142
  - A/D Data Registe
    153
  - ADCR0 Registe
    154
  - ADCR1 Registe
    155
  - ADPGA Registe
    157
  - DACTRL Registe
    163
  - DAH Registe
    163
  - DAL Registe
    163
  - CP0CR Registe
    171
  - CP1CR Registe
    172
  - CPHCR Registe
    173
  - SPI Slave Mode Timing - CPHA=0
    195
  - SPI Slave Mode Timing - CPHA=1
    195
  - UART 0 Block Diag
    199
  - UART0 Mode 0 Timing Diag
    204
  - UART0 Mode 1 Timing Diag
    205
  - UART0 Mode 3 Timing Diag
    207
  - UART1 Block Diag
    209
  - UART1 Mode a Timing Diag
    213
  - UART1 Mode B Timing Diag
    214

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