HC705E5GRSSLASHD datasheet(17/148 Pages) NXP

17 / 148 page

MC68HC705E5 — Rev. 1.0

General Release Specification

General Description

General Release Specification — MC68HC705E5

Section 1. General Description

1.1 Contents

1.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1.3

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

1.4

Mask Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

1.5

Functional Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

1.5.1

VDD and VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

1.5.2

IRQ/VPP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

1.5.3

OSC1 and OSC2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

1.5.4

RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.5.5

PA0–PA7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.5.6

PB0–PB7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.5.7

PC0–PC3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.5.8

XFC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.5.9

VDDSYN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.2 Introduction

The MC68HC705E5 is a low-cost introduction to the M68HC05 Family

of microcontrollers (MCUs). The HC05 central processing unit (CPU)

core has been enhanced with a 15-stage multifunctional timer and

programmable phase-locked loop (PLL). The MCU is available in a

28-pin package and has two 8-bit input/output (I/O) ports and one 4-bit

I/O port. The 8-Kbyte memory map consists of user eraseable,

programmable read-only memory (EPROM), random-access memory

(RAM), bootloader ROM, and I/O.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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