MC68HC705P9CS datasheet(32/160 Pages) FREESCALE

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Memory

Technical Data

MC68HC705P9 — Rev. 4.0

Memory

MOTOROLA

3.3 Memory Map

$0000

↓

$001F

I/O REGISTERS (32 BYTES)

PORT A DATA REGISTER (PORTA)

$0000

PORT B DATA REGISTER (PORTB)

$0001

PORT C DATA REGISTER (PORTC)

$0002

$0020

↓

$004F

PAGE ZERO USER EPROM (48 BYTES)

PORT D DATA REGISTER (PORTD)

$0003

DATA DIRECTION REGISTER A (DDRA)

$0004

DATA DIRECTION REGISTER B (DDRB)

$0005

$0050

↓

$007F

UNIMPLEMENTED (48 BYTES)

DATA DIRECTION REGISTER C (DDRC)

$0006

DATA DIRECTION REGISTER D (DDRD)

$0007

UNIMPLEMENTED

$0008

$0080

↓

$00FF

RAM (128 BYTES)

$0009

SIOP CONTROL REGISTER (SCR)

$000A

SIOP STATUS REGISTER (SSR)

$000B

$0100

↓

$08FF

USER EPROM (2048 BYTES)

SIOP DATA REGISTER (SDR)

$000C

UNIMPLEMENTED

$000D

$000E

$0900

MASK OPTION REGISTER

$000F

$0901

↓

$1EFF

UNIMPLEMENTED (5631 BYTES)

$0010

$0011

TIMER CONTROL REGISTER (TCR)

$0012

$1F00

↓

$1FEF

BOOTLOADER ROM (240 BYTES)

TIMER STATUS REGISTER (TSR)

$0013

INPUT CAPTURE REGISTER HIGH (ICRH)

$0014

INPUT CAPTURE REGISTER LOW (ICRL)

$0015

$1FF0

COP CONTROL REGISTER

OUTPUT COMPARE REGISTER HIGH (OCRH)

$0016

$1FF1

↓

$1FF7

RESERVED

OUTPUT COMPARE REGISTER LOW (OCRL)

$0017

TIMER REGISTER HIGH (TRH)

$0018

TIMER REGISTER LOW (TRL)

$0019

$1FF8

↓

$1FFF

USER VECTOR EPROM (8 BYTES)

ALTERNATE TIMER REGISTER HIGH (ATRH)

$001A

ALTERNATE TIMER REGISTER LOW (ATRL)

$001B

EPROM PROGRAMMING REGISTER (EPROG)

$001C

ADC DATA REGISTER (ADDR)

$001D

ADC STATUS/CONTROL REGISTER (ADSCR)

$001E

RESERVED

$001F

TIMER INTERRUPT VECTOR HIGH

$1FF8

TIMER INTERRUPT VECTOR LOW

$1FF9

EXTERNAL INTERRUPT VECTOR HIGH

$1FFA

EXTERNAL INTERRUPT VECTOR LOW

$1FFB

SOFTWARE INTERRUPT VECTOR HIGH

$1FFC

SOFTWARE INTERRUPT VECTOR LOW

$1FFD

RESET VECTOR HIGH

$1FFE

RESET VECTOR LOW

$1FFF

Figure 3-1. Memory Map

Freescale Semiconductor, Inc.

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