UPD750004A datasheet(4/84 Pages) NEC

4 / 84 page

µPD750004, 750006, 750008, 750004(A), 750006(A), 750008(A)

CONTENTS

PIN CONFIGURATION (TOP VIEW) .........................................................................................

BLOCK DIAGRAM ......................................................................................................................

PIN FUNCTIONS .........................................................................................................................

3.1

PORT PINS ......................................................................................................................................

3.2

NON-PORT PINS ............................................................................................................................

3.3

PIN INPUT/OUTPUT CIRCUITS .....................................................................................................

3.4

CONNECTION OF UNUSED PINS ................................................................................................

Ι MODE/Mk ΙΙ MODE SWITCH FUNCTION ........................................................................ 14

4.1

DIFFERENCES BETWEEN Mk

Ι MODE AND Mk ΙΙ MODE ........................................................

4.2

SETTING OF THE STACK BANK SELECTION REGISTER (SBS) ............................................

MEMORY CONFIGURATION .....................................................................................................

PERIPHERAL HARDWARE FUNCTIONS ................................................................................

6.1

DIGITAL I/O PORTS .......................................................................................................................

6.2

CLOCK GENERATOR ....................................................................................................................

6.3

CONTROL FUNCTIONS OF SUBSYSTEM CLOCK OSCILLATOR ............................................

6.4

CLOCK OUTPUT CIRCUIT ............................................................................................................

6.5

BASIC INTERVAL TIMER/WATCHDOG TIMER ...........................................................................

6.6

CLOCK TIMER ................................................................................................................................

6.7

TIMER/EVENT COUNTER ..............................................................................................................

6.8

SERIAL INTERFACE ......................................................................................................................

6.9

BIT SEQUENTIAL BUFFER ...........................................................................................................

INTERRUPT FUNCTIONS AND TEST FUNCTIONS ................................................................

STANDBY FUNCTION ................................................................................................................

RESET FUNCTION .....................................................................................................................

10. MASK OPTION ...........................................................................................................................

11. INSTRUCTION SET ....................................................................................................................

12. ELECTRICAL CHARACTERISTICS ..........................................................................................

13. CHARACTERISTIC CURVE (REFERENCE VALUES) .............................................................

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