MC68HC05K0 Datasheet, PDF (18/154 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

Technical Data
Freescale Semiconductor, Inc.
1.2 Introduction
The MC68HC05K1 and MC68HC05K0 are members of Motorola’s
low-cost, high-performance M68HC05 Family of 8-bit microcontroller
units (MCU). The M68HC05 Family is based on the customer-specified
integrated circuit (CSIC) design strategy. All MCUs in the family use the
popular M68HC05 central processor unit (CPU) and are available with a
variety of subsystems, memory sizes and types, and package types.
On-chip memory includes 504 bytes of user read-only memory (ROM)
and 32 bytes of user random-access memory (RAM).
The MC68HC05K1 has an additional 64-bit personality, erasable,
programmable, read-only memory (PEPROM). In an MC68HC05K1
MCU, the PEPROM cannot be erased and serves as a 64-bit array of
one-time programmable ROM (OTPROM).
Appendix A. MC68HCL05K0 introduces the MC68HCL05K0, a
low-power version of the MC68HC05K0.
Appendix B. MC68HSC05K0 introduces the MC68HSC05K0, a
high-speed version of the MC68HC05K0.
1.3 Features
Features of the MC68HC05K0 and MC68HC05K1 include:
• M68HC05 CPU
• Memory-mapped input/output (I/O) registers
• 504 bytes of ROM including eight user vector locations
• 32 bytes of user RAM
• 64-bit PEPROM/OTPROM (MC68HC05K1 only)
• 10 bidirectional input/output (I/O) pins with these features:
– Software programmable pulldown devices
– Four I/O pins with 8-mA current sinking capability
– Four I/O pins with maskable external interrupt capability
Technical Data
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
General Description
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