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68HC705D32A: Microcontroller

 

The MC68HC705D32A, with 16K bytes of masked ROM, is a member of the Motorola M68HC05 family of advanced HCMOS 8-bit single chip microcomputers. Based around the industry standard M68HC05 CPU core and its familiar, efficient instruction set, this device includes five 6-bit pulse width modulation (PWM) channels, a serial communications interface (SCI), computer operating properly (COP) watchdog timer, high current output port capable of driving LEDs and a 16-bit timer with input capture and output compare.
Page Contents
68HC705D32A Features

  • 68HC05 CPU
  • 32304 bytes of User EPROM (plus 10 bytes for vectors) on the MC68HC705D32
  • 239 bytes of bootloader ROM (including bootloader vectors)
  • 352 bytes of RAM
  • Memory-mapped I/O
  • 31 bidirectional I/O Lines
  • Fully static operation
  • On-chip oscillator with crystal/ceramic resonator
  • 16-bit capture/compare timer sub-system
  • Five 6-bit pulse width modulation channels operating at 30 kHz
  • High current LED drive output port (port B)
  • Asynchronous serial communications interface (SCI) system
  • Power saving STOP, WAIT and data-retention modes
  • Single 3.0 to 5.5 Volt supply (2 Volt data retention mode)
  • Computer operating properly (COP) watchdog timer with clock monitor
  • Software programmable external interrupt sensitivity

 

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68HC705D32A Parametrics

RAM
(Bytes)
EPROM/OTP
(Bytes)
Timer
I/O
Serial
PWM
Operating Voltage
(V)
Bus Frequency
(Max)
(MHz)
352
32K
16-Bit, 1 I/C, 1 O/C
31
SCI
5-CH 6-Bit
3.3, 5.0
2.1

 

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68HC705D32A Documentation
Document ID Document Title
MC68HC05D9/D 68HC05D9, 68HC05D24, 68HC05D32, and 68HC705D32 Technical Data Book
68HC05APPNOTES Table of 68HC05 Applications Notes

 

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68HC705D32A Design Tools and Data
ID Name
M68MMDS05 MMDS05 Emulator System
M68MMPFB0508 MMEVS Modular Evaluation System

 

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68HC705D32A Orderable Parts
Orderable Part ID Package Info Status Remarks
MC68HC705D32P 40-Pin Dual In-Line Package (DIP) -40 to +85 C
MC68HC705D32FN 44-Pin Plastic Leaded Chip Carrier (PLCC) -40 to +105 C

 

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