Holtek HT66F20 Manuals

Manuals and User Guides for Holtek HT66F20. We have 1 Holtek HT66F20 manual available for free PDF download: Manual

Holtek HT66F20 Manual (294 pages)

A/D Flash MCU with EEPROM

Brand: Holtek | Category: Microcontrollers | Size: 8 MB

Table of Contents
2
Features
7
Peripheral Feat�Res
8
General Description
9
Selection Table
10
Block Diagram
11
Pin Assignment
12
Pin Description
16
Absolute Maximum Ratings
22
D.C. Characteristics
23
A/D Converter Characteristics
25
Comparator Electrical Characteristics
26
Power-On Reset Characteristics
26
System Architecture
27
Clocking and Pipelining
27
Stack
29
Arithmetic and Logic Unit - ALU
29
Flash Program Memory
30
Special Vectors
31
Look-�P Table
31
In Circ�It Programming - ICP
33
Data Memory
34
Special Function Register Description
38
Indirect Addressing Registers - IAR0� IAR
38
Memory Pointers - MP0� MP
38
Bank Pointer - BP
39
EEPROM Data Memory
44
EEPROM Data Memory Str�Ct�Re
44
EEPROM Registers
44
Reading Data from the EEPROM
48
Writing Data to the EEPROM
48
Write Protection
48
EEPROM Interr�Pt
48
Programming Considerations
49
Programming Examples
49
Oscillators
50
Oscillator Overview
50
System Clock Configurations
50
External Crystal/Ceramic Oscillator - HXT
52
External RC Oscillator - ERC
53
Internal High Speed RC Oscillator - HIRC
53
External 32.�68Khz Crystal Oscillator - LXT
54
Internal Low Speed Oscillator - LIRC
55
S�Pplementary Oscillators
55
Operating Modes and System Clocks
56
System Clock
56
System Operation Modes
58
Control Register
59
Fast Wake-�P
61
Operating Mode Switching
62
Standby C�Rrent Considerations
66
Programming Considerations
67
Watchdog Timer
68
Watchdog Timer Clock So�Rce
68
Watchdog Timer Control Register
68
Watchdog Timer Operation
69
Reset and Initialisation
70
Reset F�Nctions
70
Reset Initial Conditions
73
Input/Output Ports
83
P�Ll-High Resistors
86
Port a Wake-�P
88
I/O Port Control Registers
88
Pin-Remapping F�Nctions
91
Pin-Remapping Registers
91
Timer Modules - TM
99
Introd�Ction
99
TM Operation
100
TM Clock So�Rce
100
TM Interr�Pts
100
TM External Pins
101
Programming Considerations
111
Compact Type TM - CTM
112
Compact TM Operation
112
Compact Type TM Register Description
113
Compact Type TM Operating Modes
117
Standard Type TM - STM
123
Standard TM Operation
123
Standard Type TM Register Description
124
Standard Type TM Operating Modes
133
Enhanced Type TM - ETM
144
Enhanced TM Operation
145
Enhanced Type TM Register Description
145
Enhanced Type TM Operating Modes
152
Aanlog to Digital Converter
169
A/D Overview
169
A/D Converter Register Description
169
A/D Operation
175
Programming Considerations
178
A/D Programming Example
179
Comparators
181
Comparator Operation
181
Comparator Registers
182
Comparator Interr
184
Programming Considerations
184
Serial Interface Module - SIM
185
SPI Interface
185
I 2 C Interface
192
Peripheral Clock Output
201
Peripheral Clock Operation
201
Interrupts
202
Interr�Pt Operation
216
M�Lti-F�Nction Interr�Pt
217
Programming Considerations
225
Low Voltage Detector - LVD
226
LVD Register
226
LVD Operation
227
SCOM Function for LCD
228
LCD Operation
228
LCD Bias Control
229
Configuration Options
231
Application Circuits
232
UART Module Serial Interface
233
Pin Assignment
234
UART Data Transfer Scheme
240
UART Commands
241
Ba�D Rate Generator
241
Managing Receiver Errors
254
Instruction Set
259
Moving and Transferring Data
259
Arithmetic Operations
259
Logical and Rotate Operation
260
Branches and Control Transfer
260
Bit Operations
260
Other Operations
260
Instruction Set Summary
261
Instruction Definition
263
Package Information
272
6-Pin DIP (300Mil) O�Tline Dimensions
273
6-Pin NSOP (�50Mil) O�Tline Dimensions
275

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