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MFG:MOTOROLA  Package Cooled:05+  D/C:QFP  

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Part Number: MC68331

 

MFG: MOTOROLA

Package Cooled: 05+

D/C: QFP

Description: The MC68331, a highly-integrated 32-bit microcontroller, combines high-performance data manipulation c...


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MC68331 General Description


The MC68331, a highly-integrated 32-bit microcontroller, combines high-performance data manipulation capabilities with powerful peripheral subsystems. The MCU is built up from standard modules that interface through a common intermodule bus (IMB). Standardization facilitates rapid development of devices tailored for specific applications.

The MCU incorporates a 32-bit CPU (CPU32), a system integration module (SIM), a general-purpose timer (GPT), and a queued serial module (QSM).

The MCU can either synthesize an internal clock signal from an external reference or use an external  clock input directly. Operation with a 32.768-kHz reference frequency is standard. The maximum system clock speed is 20.97 MHz. Because MCU operation is fully static, register and memory contents are not affected by a loss of clock.

High-density complementary metal-oxide semiconductor (HCMOS) architecture makes the basic power consumption of the MCU low. Power consumption can be minimized by stopping the system clock. The CPU32 instruction set includes a low-power stop (LPSTOP) command that efficiently implements this capability.

MC68331 Features

• Modular Architecture
• Central Processing Unit (CPU32)
- Upward Object Code Compatible
- New Instructions for Controller Applications
- 32-Bit Architecture
- Virtual Memory Implementation
- Loop Mode of Instruction Execution
- Table Lookup and Interpolate Instruction
- Improved Exception Handling for Controller Applications
- Trace on Change of Flow
- Hardware Breakpoint Signal, Background Mode
- Fully Static Operation
• System Integration Module (SIM)
- External Bus Support
- Programmable Chip-Select Outputs
- System Protection Logic
- Watchdog Timer, Clock Monitor, and Bus Monitor
- System Protection Logic
- System Clock Based on 32.768-kHz Crystal for Low Power Operation
- Test/Debug Submodule for Factory/User Test and Development
• Queued Serial Module (QSM)
- Enhanced Serial Communication Interface (SCI), Universal Asynchronous Receiver Transmitter
   (UART): Modulus Baud Rate, Parity
- Queued Serial Peripheral Interface (QSPI): 80-Byte RAM, Up to 16 Automatic Transfers
- Dual Function I/O Ports
- Continuous Cycling, 8 to 16 Bits per Transfer
• General-Purpose Timer (GPT)
- Two 16-Bit Free-Running Counters With One Nine-Stage Prescaler
- Three Input Capture Channels
- Four Output Compare Channels
- One Input Capture/Output Compare Channel
- One Pulse Accumulator/Event Counter Input
- Two Pulse-Width Modulation Outputs
- Optional External Clock Input

MC68331 Connection Diagram

MC68331  Connection Diagram

MC68331 datasheet

MC68331
PDF/DataSheet Download

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