MC68LC302 Datasheet, PDF (11/169 Pages) Motorola, Inc – Low Power Integrated Multiprotocol Processor Reference Manual

Introduction
1.2 FEATURES
The features of the LC302 are as follows. The items in bold face type show major differenc-
es from the MC68302, although a complete list of differences is given in 1.4 LC302 Differ-
ences.
• On-Chip Static 68000 Core Supporting a 16- or 8-Bit M68000 Family-System
• SIB Including:
Independent Direct Memory Access (IDMA) Controller.
Interrupt Controller with Two Modes of Operation
Parallel Input/Output (I/O) Ports, some with Interrupt Capability
Parallel Input/Output (I/O) Ports on D15-D8 in 8 bit mode
On-Chip 1152-Byte Dual-Port RAM
Three Timers Including a Watchdog Timer
New Periodic Interrupt Timer (PIT)
Four Programmable Chip-Select Lines with Wait-State Generator Logic
Programmable Address Mapping of the Dual-Port RAM and IMP Registers
On-Chip Clock Generator with Output Signal
On-Chip PLL Allows Operation with 32kHz or 4MHz Crystals
Glueless Interface to EPROM, SRAM, Flash EPROM, and EEPROM
Allows Boot in 8-bit Mode, and Running Switch to 16-bit Mode
System Control:
System Status and Control Logic
Disable CPU Logic (Slave Mode Operation)
Hardware Watchdog
New Low-Power (Standby) Modes With Wake-up From 2 Pins or PIT
Freeze Control for Debugging (Available Only in the PGA Package)
DRAM Refresh Controller
• CP Including:
Main Controller (RISC Processor)
Two Independent Full-Duplex Serial Communications Controllers (SCCs)
Supporting Various Protocols:
High-Level/Synchronous Data Link Control (HDLC/SDLC)
Universal Asynchronous Receiver Transmitter (UART)
Binary Synchronous Communication (BISYNC)
Transparent Modes
Autobaud Support Instead of DDCMP and V.110
Boot from SCC Capability
1-2
MC68LC302 REFERENCE MANUAL
MOTOROLA