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68HC705RC16: Microcontroller

 

The MC68HC705RC16 is a low-cost addition to the M68HC05 Family of microcontrollers (MCUs) and is suitable for remote control applications. It contains the HC05 CPU core, including the 14-stage core timer with RTI and COP watchdog systems. On-chip peripherals include a carrier modulator transmitter. The 16-Kbyte memory map has 15,936 bytes of user EPROM, 340 bytes of boot ROM, and 352 bytes of RAM. There are 20 input/output (I/O) lines (eight having keyscan pullups/interrupts) and a low-power reset pin.
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68HC705RC16 Features

  • Low Cost HC05 Core
  • 28-Pin Plastic Dual In-Line (PDIP), Small Outline Integrated Circuit (SOIC), or 44-Lead Plastic Leaded Chip Carrier (PLCC) Packages
  • On-Chip Oscillator with Crystal/Ceramic Resonator
  • 4-MHz Maximum Oscillator Frequency at 5 V and 3.3 V Supply
  • Fully Static Operation
  • 15,936 Bytes of User EPROM
  • 64 Bytes of Burn-In ROM
  • 352 Bytes of On-Chip RAM
  • 14-Stage Core Timer with Real-Time Interrupt (RTI) and
  • Computer Operating Properly (COP) Watchdog Circuits
  • Carrier Modulator Transmitter Supporting Baseband, Pulse
  • Length Modulator (PLM), and Frequency Shift Keying (FSK) Protocols
  • Low-Power Reset Pin
  • 20 Bidirectional I/O Lines (Four Additional I/O Lines Available for
  • Bond Out in 44-Lead PLCC Package)
  • Mask Programmable Pullups and Interrupt on Eight Port Pins (PB0&endash;PB7)
  • High-Current Infrared (IR) Drive Pin
  • High-Current Port Pin (PC0)
  • Power-Saving Stop and Wait Modes
  • Mask Selectable Options:
    • COP Watchdog Timer
    • STOP Instruction Disable
    • Edge-Sensitive or Edge- and Level-Sensitive Interrupt Trigger
    • Port B Pullups for Keyscan

 

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68HC705RC16 Parametrics

RAM
(Bytes)
EPROM/OTP
(Bytes)
Timer
I/O
Operating Voltage
(V)
Bus Frequency
(Max)
(MHz)
350
16K
I.R. Timer
20
3.3, 5.0
2.1

 

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68HC705RC16 Documentation
Document ID Document Title
HC705RC16GRS/D 68HC705RC16 General Release Specification
68HC05APPNOTES Table of 68HC05 Applications Notes

 

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68HC705RC16 Design Tools and Data
ID Name
M68MMPFB0508 MMEVS Modular Evaluation System
M68MMDS0508 MMDS0508 Emulator System

 

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68HC705RC16 Orderable Parts
Orderable Part ID Package Info Status Remarks
MC68HC705RC16P 28-Pin Plastic Dual In-Line Package (PDIP) 0 to +70 C
MC68HC705RC16DW 28-Pin Small Outline Integrated Circuit (SOIC) 0 to +70 C
MC68HC705RC16FN 44-Lead Plastic Leaded Chip Carrier (PLCC) 0 to +70 C

 

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