GMS81508A Datasheet, PDF (2/91 Pages) Hynix Semiconductor – USERS MANUAL

- CONTENTS -
1. OVERVIEW...........................................................................................................................................1
1.1. FEATURES ..........................................................................................................................................1
1.2. BLOCK DIAGRAM..............................................................................................................................2
1.3. PIN ASSIGNMENT ..............................................................................................................................3
1.4. PACKAGE DIMENSION .....................................................................................................................4
1.5. PIN DESCRIPTION..............................................................................................................................5
2. FUNCTIONS..........................................................................................................................................7
2.1. REGISTERS .........................................................................................................................................7
2.1.1. A - Register....................................................................................................................................8
2.1.2. X- Register.....................................................................................................................................8
2.1.3. Y- Register .....................................................................................................................................8
2.1.4. Stack Pointer .................................................................................................................................8
2.1.5. Program Counter .........................................................................................................................10
2.1.6. Program Status Word...................................................................................................................10
2.2. MEMORY SPACE..............................................................................................................................12
2.2.1. RAM area ....................................................................................................................................12
2.2.2. Peripheral Register area ..............................................................................................................12
2.2.3. Program ROM area .....................................................................................................................12
2.2.4. Peripheral Register List ...............................................................................................................14
2.3. CLOCK GENERATION CIRCUIT .....................................................................................................16
2.3.1. Oscillation Circuit .......................................................................................................................16
2.3.2. Prescaler .....................................................................................................................................17
2.4. BASIC INTERVAL TIMER................................................................................................................18
2.4.1. Control of Basic Interval Timer ....................................................................................................18
2.5. WATCH DOG TIMER........................................................................................................................19
2.5.1. Control of Watch Dog Timer ........................................................................................................19
2.5.2. The output of WDT signal.............................................................................................................20
2.6. TIMER................................................................................................................................................21
2.6.1. Control of Timer ..........................................................................................................................23
2.6.2. Interval Timer ..............................................................................................................................24
2.6.3. Event Counter ..............................................................................................................................24
2.6.4. Pulse Output ................................................................................................................................24
2.6.5. Input Capture...............................................................................................................................24
2.7. EXTERNAL INTERRUPT..................................................................................................................26
2.8. A/D CONVERTER .............................................................................................................................27
2.8.1. Control of A/D Converter .............................................................................................................27
2.9. SERIAL I/O ........................................................................................................................................29
2.9.1. Data Transmission/Receiving Timing ...........................................................................................31
2.9.2. The Serial I/O operation by Srdy pin ............................................................................................31
2.9.3. The method of Serial I/O ..............................................................................................................32
2.9.4. The Method to Test Correct Transmission with S/W ......................................................................32
2.10. PWM ................................................................................................................................................33
2.10.1. Controls of PWM .......................................................................................................................33
2.11. BUZZER DRIVER............................................................................................................................35
2.11.1. Buzzer Driver Operation ............................................................................................................36
2.12. INTERRUPTS...................................................................................................................................37
2.12.1. Interrupt Circuit Configuration and Kinds..................................................................................37
2.12.2. Interrupt Control........................................................................................................................38
2.12.3. Interrupt Priority .......................................................................................................................39