MC68HC705J2 Datasheet, PDF (13/82 Pages) Freescale Semiconductor, Inc – member of the low-cost

Freescale Semiconductor, Inc.
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SECTION 1
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INTRODUCTION
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The MC68HC705J2 is a member of the low-cost, high-performance M68HC05
Family of 8-bit microcontroller units (MCUs). The high-density, complementary
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metal-oxide semiconductor (HCMOS) M68HC05 Family is based on the
customer-specified integrated circuit (CSIC) design strategy. All MCUs in the family
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use the popular M68HC05 central processor unit (CPU) and are available with a
variety of subsystems, memory sizes and types, and package types.
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The MC68HC705J2 is an expansion of the MC68HC05J1 design. On-chip memory
is enhanced with 2 Kbytes of erasable, programmable ROM (EPROM), 112 Kbytes
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of RAM, and a bootloader ROM.
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1.1 Features
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The MCU features include the following:
• Popular M68HC05 CPU
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• Memory-Mapped Input/Output (I/O) Registers
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• 2064 Bytes of User EPROM Including 16 User Vector Locations
• 112 Bytes of Static RAM (SRAM)
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• 14 Bidirectional I/O Pins
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• Fully Static Operation With No Minimum Clock Speed
• On-Chip Oscillator With Crystal/Ceramic Resonator Connections
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• 15-Bit Multifunction Timer
• Real-Time Interrupt Circuit
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• Bootloader ROM
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• Power-Saving STOP, WAIT, and Data Retention Modes
• MC68HC05J1 Emulation Mode
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• Selectable Edge-Sensitive or Edge- and Level-Sensitive External Interrupt
Trigger
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• Selectable Computer Operating Properly (COP) Timer
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• 8 x 8 Unsigned Multiply Instruction
• One Time Programmable 20-Pin Dual-in-Line Package (DIP)
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INTRODUCTION
Rev. 2
1-1
For More Information On This Product,
Go to: www.freescale.com