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68HC705C9A: Microcontroller

 

The MC68HC705C9A HCMOS microcomputer is a member if the M68HC05 Family. The MC68HC705C9A is the EPROM version of the MC68HC05C9A and can also be configuerd as the EPROM version of the MC68HC05C12A. The MC68HC705C9A memory map consists of 12,092 bytes of user EPROM and 176 bytes of RAM when configured as an MC68HC05C9A. The MC68HC705C9A includes a serial communications interface, a serial peripheral interface, and a 16-bit capture/compare timer.
Page Contents
68HC705C9A Features

  • Programmable Mask Option Register (MOR) for C9A/C12A Configuration
  • Programmable MOR for Port B Pullups and Interrupts
  • Popular HC05 CPU
  • 15,932 Bytes of EPROM (12,092 Bytes for C12A Configuration)
  • 352 Bytes of RAM (176 for C12A Configuration)
  • Memory Mapped Input/Output (I/O)
  • 31 Bidirectional I/O lines (24 I/O+6 Input Only for C12A Configuration) with High Current Sink and Source on PC7
  • Asynchronous Serial Communications Interface (SCI)
  • Synchronous Serial Peripheral Interface (SPI)
  • 16-bit Capture/Compare Timer
  • Computer Operating Properly (COP) Watchdog Timer and Clock Monitor
  • Power-Saving Wait and Stop Modes
  • On-chip Crystal Oscillator Connections
  • Single 3.0 Volts to 5.5 Volts power supply requirement
  • EPROM contents security feature

 

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68HC705C9A Parametrics

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

 

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68HC705C9A Documentation
Document ID Document Title
HC705C9AGRS/D 68HC705C9A General Release Specification
68HC05APPNOTES Table of 68HC05 Applications Notes

 

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68HC705C9A Design Tools and Data
ID Name
ICS0508 ICS0508 Development System
M68MMPFB0508 MMEVS Modular Evaluation System
M68MMDS0508 MMDS0508 Emulator System

 

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68HC705C9A Orderable Parts
Orderable Part ID Package Info Status Remarks
MC68HC705C9ACP 40-Pin Plastic Dual In-Line Package (DIP) -40 to +85 C
MC68HC705C9ACB 42-Pin Shrink Dual In-Line Package (SDIP) -40 to +85 C
MC68HC705C9ACFN 44-Lead Plastic Leaded Chip Carrier (PLCC) -40 to +85 C
MC68HC705C9ACFB 44-Pin Quad Flat Pack (QFP) -40 to +85 C

 

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