HC805K3GRSSLASHD datasheet(29/119 Pages) NXP

부품명	HC805K3GRS/D

상세설명	The low-cost MC68HC805K3 microcontroller is a member of the M68HC805 Family of microprocessors.

PDF	119 Pages

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제조업체	NXP [NXP Semiconductors]

홈페이지	http://www.nxp.com

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General Release Specification

I/O and Control Registers

MC68HC805K3 — Rev. 1.0

Memory Map

2.3 I/O and Control Registers

The I/O and status/control registers reside in locations $0000–$001F.

The overall organization of these registers is shown in Figure 2-2.

The bit assignments for each register are shown in Figure 2-3 and

Figure 2-4. Reading unimplemented bits returns unknown states, and

writing to unimplemented bits has no effect.

Figure 2-2. MC68HC805K3 I/O Registers Memory Map

PORT A DATA REGISTER

PORT B DATA REGISTER

PORT A DATA DIRECTION REGISTER

PORT B DATA DIRECTION REGISTER

TIMER STATUS & CONTROL REGISTER

TIMER COUNTER REGISTER

PEEPROM STATUS & CONTROL REGISTER

RESERVED

UNIMPLEMENTED (2)

UNIMPLEMENTED (3)

UNIMPLEMENTED (10)

IRQ STATUS & CONTROL REGISTER

PORT A PULLDOWN REGISTER

PORT B PULLDOWN REGISTER

$0000

$0001

$0004

$0005

$0008

$0009

$001F

$000A

$0010

$0011

$000F

PEEPROM BIT SELECT REGISTER

$000E

MOR REGISTER 1

$0012

$0014

$0013

MOR REGISTER 2

RESERVED

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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