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68HC705L16: Microcontroller

 

The MC68HC705L16 is an 80-pin microcontroller unit (MCU) with highly sophisticated on-chip peripheral functions. The memory map includes 16 Kbytes of user ROM and 512 bytes of RAM. The MCU has five parallel ports: A, B, C, D, and E. The MC68HC05L16 includes a timebase circuit, 8- and 16-bit timers, a computer operating properly (COP) watchdog timer, liquid crystal display (LCD) drivers, and a simple serial peripheral interface (SSPI).

Page Contents

68HC705L16 Features

  • Low-cost HC05 core
  • 16,400 Bytes of mask EPROM, including 16 bytes of user vectors and 512 bytes of on-chip RAM
  • General-purpose data pins:
    • 16 bidirectional pins
    • 8 input/ouptut-only pins
    • 15 output-only pins, including 8-bit key wakeup interrupts
  • Pullup resistors options
  • Open-drain outputs options
  • Two interrupt request (IRQ) inputs
  • 16-bit timer with input capture and output compare (timer 1)
  • 8-bit event counter/modulus clock divider (timer 2)
  • Simple serial peripheral interface (SSPI)
  • LCD drivers - 1-to-4 backplane drivers x 27-to-39 frontplane drivers
  • On-chip timebase circuits with COP watchdog timer and timebase interrupts
  • Dual oscillators and selectable system clock frequency
  • Power-saving stop mode and wait mode
  • 80-pin quad flat pack (QFP) package

 

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68HC705L16 Parametrics

RAM
(Bytes)
EPROM/OTP
(Bytes)
Timer
I/O
Serial
Operating Voltage
(V)
Bus Frequency
(Max)
(MHz)
512
16K
16-Bit 1I/C 1O/C, 8-Bit 1I/C 1O/C, RTI
39
SIOP
3.3, 5.0
2.1

 

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68HC705L16 Documentation
Document ID Document Title
HC05L16GRS/D 68HC05L16 and 68HC705L16 General Release Specification
68HC05APPNOTES Table of 68HC05 Applications Notes

 

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68HC705L16 Design Tools and Data
ID Name
M68MMPFB0508 MMEVS Modular Evaluation System
M68MMDS0508 MMDS0508 Emulator System

 

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68HC705L16 Orderable Parts
Orderable Part ID Package Info Status Remarks
MC68HC05L16FU 80-Pin Plastic Quad Flat Pack (QFP) 0 to +70 C
MC68HC05L16CFU 80-Pin Plastic Quad Flat Pack (QFP) -40 to +85 C

 

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