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68HC705JB3: Microcontroller

 

The MC68HC705JB3 is a member of the low-cost, high-performance M68HC05 Family of 8-bit microcontroller units (MCUs) designed with a Universal Serial Bus (USB) port. All MCUs in the family use the popular M68HC05 central processor unit (CPU) and are available with a variety of subsystems, memory sizes and types, and package types.
Page Contents
68HC705JB3 Features

  • Industry standard M68HC05 CPU core
  • Memory-mapped Input/Output (I/O) registers
  • 2560 Bytes of user EPROM with security function
  • 144 Bytes of user RAM
  • 4 Fully compliant Low Speed USB with 3 Endpoints:
  • 3.3Volt DC output pin for USB pullup resistors
  • Multi-Function Timer
  • 16-Bit Input Capture/Output Compare Timer
  • 19 Bidirectional I/O pins
  • Low Voltage Reset (LVR) circuit
  • Computer Operating Properly (COP) Watchdog reset
  • Power saving STOP and WAIT Modes
  • Available in 20-Pin PDIP and 20-pin SOIC packages
  • Available in 28-Pin PDIP and 28-pin SOIC packages

 

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68HC705JB3 Parametrics

RAM
(Bytes)
EPROM/OTP
(Bytes)
Timer
I/O
Serial
Operating Voltage
(V)
Bus Frequency
(Max)
(MHz)
144
2.5K
16-Bit, 1I/C, 1O/C, MFT, RTI
19
USB
5.0
3.0

 

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68HC705JB3 Documentation
Document ID Document Title
HC05JB3GRS/H 68HC05JB3 and 68HC705JB3 General Release Specification
68HC05APPNOTES Table of 68HC05 Applications Notes

 

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68HC705JB3 Design Tools and Data
ID Name
M68MMDS05 MMDS05 Emulator System
M68MMPFB0508 MMEVS Modular Evaluation System

 

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68HC705JB3 Orderable Parts
Orderable Part ID Package Info Status Remarks
XC68HC705JB3JP 20-Pin Dual In-Line Package (DIP) 0 to +70 C

 

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