68HC05CT4 datasheet(15/142 Pages) FREESCALE

15 / 142 page

MC68HC05CT4 — Rev. 2.0

General Release Specification

General Description

General Release Specification — MC68HC05CT4

Section 1. General Description

1.1 Contents

1.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

1.3

Mask Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

1.4

Signal Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

1.4.1

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

1.4.2

VDD2 and VSS2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

1.4.3

Maskable Interrupt Request (IRQ) . . . . . . . . . . . . . . . . . . .21

1.4.4

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

1.4.5

Reset (RESET) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

1.4.6

Port A (PA0–PA7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.4.7

Port B (PB0–PB7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.4.8

Port C (PC0–PC7/PWM) . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.4.9

Port D (PD0/CMP3+, PD1/CMP1–, PD2/CMP12+,

PD3/CMP2–, PD4/SDIO, PD5/SCK,

and PD6/TCMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.4.10

TCAP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

1.4.11

FinT and FinR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.4.12

PDoutT and PDoutR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

1.2 Introduction

The MC68HC05CT4 is a 44-pin member of the MC68HC05 Family of

microcontrollers (MCUs), which supports cordless telephone

applications. The memory map includes 5376 bytes of on-chip ROM and

256 bytes of RAM. The microcontroller unit has three 8-bit input/output

(I/O) ports: A, B, and C; and one 7-bit I/O port: D. Port C has pullup

options and keyscan capability. The MC68HC05CT4 includes a bird

core, a bird timer, a synchronous serial interface (SSI), 16-bit timer, a

Freescale Semiconductor, Inc.

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