UPD6P9 datasheet(6/73 Pages) RENESAS

6 / 73 page

µPD67, 67A, 68, 68A, 69

Data Sheet U14935EJ2V1DS

CONTENTS

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

1.1

List of Pin Functions ............................................................................................................

1.2

Pin I/O Circuits ......................................................................................................................

1.3

Connection of Unused Pins .................................................................................................

INTERNAL CPU FUNCTIONS .....................................................................................................

2.1

Program Counter (PC) ..........................................................................................................

2.2

Stack Pointer (SP) .................................................................................................................

2.3

Address Stack Register (ASR (RF)) ....................................................................................

2.4

Program Memory (ROM) ....................................................................................................... 10

2.5

Data Memory (RAM) .............................................................................................................. 11

2.6

Data Pointer (DP) .................................................................................................................. 12

2.7

Accumulator (A) ....................................................................................................................

2.8

Arithmetic and Logic Unit (ALU) .........................................................................................

2.9

Flags ....................................................................................................................................... 13

2.9.1

Status flag (F) ..............................................................................................................................

2.9.2

Carry flag (CY) ............................................................................................................................

PORT REGISTERS (PX) .............................................................................................................. 14

3.1

KI/O Port (P0) .......................................................................................................................... 15

3.2

KI Port/Special Ports (P1) .....................................................................................................

3.2.1

KI port (P11: bits 4 to 7 of P1) .....................................................................................................

3.2.2

S0 port (bit 2 of P1) .....................................................................................................................

3.2.3

S1/LED (bit 3 of P1) .....................................................................................................................

3.2.4

S2 port (bit 1 of P1) .....................................................................................................................

3.3

Control Register 0 (P3) .........................................................................................................

3.3.1

RAM retention flag (bit 3 of P3) ..................................................................................................

3.4

Control Register 1 (P4) .........................................................................................................

TIMER .............................................................................................................................................. 20

4.1

Timer Configuration .............................................................................................................. 20

4.2

Timer Operation ....................................................................................................................

4.3

Carrier Output ........................................................................................................................

4.3.1

Carrier output generator ..............................................................................................................

4.3.2

Carrier output control ..................................................................................................................

4.4

Software Control of Timer Output ....................................................................................... 26

STANDBY FUNCTION ................................................................................................................... 27

5.1

Outline of Standby Function ...............................................................................................

5.2

Standby Mode Setting and Release ...................................................................................

5.3

Standby Mode Release Timing ............................................................................................

RESET ............................................................................................................................................. 31

UPD6P9 Datasheet(PDF) 6 Page - Renesas Technology Corp

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