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MC68LC302/D

This document contains information on a product under development. Freescale reserves the right to change or discontinue this product without notice.

Product Brief

Low Cost Integrated Multiprotocol Processor

MC68LC302

Freescale introduces the low cost version of the well-known MC68302 Integrated Multiprotocol Processor (IMP).

It will be known as the MC68LC302, and will expand a family of devices based on the MC68302.

Some features and pins have been removed while other features have been enhanced as compared to the

original MC68302. Simply put, the MC68LC302 is a traditional MC68302 with a new static 68000 core, a new

timer and low power modes, but without the third serial communication controller (SCC). It is packaged in a low

profile 100 TQFP that requires less board space than the regular MC68302, as well as making it suitable for

use in height restricted applications such as PCMCIA.

68000

SYSTEM BUS

4 SDMA

CHANNELS

INTERRUPT

CONTROLLER

STATIC

M68000

CORE

1 GENERAL-

PURPOSE

DMA

CHANNEL

3 TIMERS

4 CHIP SELECTS

PIO

SYSTEM CONTROL

RAM / ROM

1152 BYTES

DUAL-PORT

RAM

PIT

LOW

POWER

CONTROL

20 ADDRESS

8/16 DATA

Freescale Semiconductor, I

For More Information On This Product,

Go to: www.freescale.com

Freescale Semiconductor

Summary of content (6 pages)

PAGE 1
Freescale Semiconductor Order this document by MC68LC302/D MC68LC302 Product Brief Freescale Semiconductor, Inc... Low Cost Integrated Multiprotocol Processor Freescale introduces the low cost version of the well-known MC68302 Integrated Multiprotocol Processor (IMP). It will be known as the MC68LC302, and will expand a family of devices based on the MC68302. Some features and pins have been removed while other features have been enhanced as compared to the original MC68302.
PAGE 2
Freescale Semiconductor, Inc. FEATURES The features of the MC68LC302 are as follows. Bold face items show major differences from the MC68302. • On-Chip Static 68000 Core Supporting a 16- or 8-Bit M68000 Family System Freescale Semiconductor, Inc...
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Freescale Semiconductor, Inc. MC68LC302 APPLICATIONS The MC68LC302 excels in several applications areas. Freescale Semiconductor, Inc... First, any application using the MC68302,but not needing all three serial channels is a potential candidate for the MC68LC302. Note however, that the MC68LC302 sacrifices most of the provision for external bus mastership, thus the MC68LC302 may not be appropriate where the MC68302 is used as part of larger systems.
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Freescale Semiconductor, Inc. • The SCP pins are now muxed with PA8, PA9, and PA10. The TXD3, RXD3, and RCLK3 functions associated with SCC3 are eliminated. • The UDS, LDS, and R/W pins are not available except in slave mode, where they replace the IPL2-0 pins. Instead, the new pins WEH, WEL, and OE have been defined for glueless interfacing to memory. • PA12 is now muxed with the MODCLK pin, which is associated with the 32 KHz or 4 MHz PLL. The MODCLK pin is sampled after reset, and then becomes PA12.
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Freescale Semiconductor, Inc. MC68LC302 PIN DESCRIPTION Address Bus NMSI1/ ISDN I/F A1-A19 RXD1/L1RXD TXD1/L1TXD RCLK1/L1CLK TCLK1/L1SY0/SDS1 CD1/L1SY1 CTS1/L1GR RTS1/L1RQ/GCIDCL Chip Select CS0/IOUT2 CS3-CS1 Data Bus D0-D15 Bus Control RXD2/PA0 TXD2/PA1 RCLK2/PA2 TCLK2/PA3 CTS2/PA4 RTS2/PA5 CD2/PA6 BRG2/SDS2/PA7 Freescale Semiconductor, Inc...
PAGE 6
Freescale Semiconductor, Inc. Table 1. MC68LC302 Ordering Information Package Type Pin Grid Array (RC Suffix) Thin Quad Flat Pack (PU Suffix) Freescale Semiconductor, Inc... Thin Quad Flat Pack (PU Suffix) Operating Voltage 5V Frequency (MHz) 20 Temperature Order Number 0°C to 70°C MC68LC302RC20 5V 5V 5V 5V 3.3V 3.3V 3.3V 3.3V 16.67 16.67 20 20 16.67 16.