mc68hc908kx8 Freescale Semiconductor, Inc, mc68hc908kx8 Datasheet - Page 17

• Manufacturer Part Number: mc68hc908kx8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 1
General Description
1.1 Introduction
The MC68HC908KX8 is a member of the low-cost, high-performance M68HC08 Family of 8-bit
microcontroller units (MCU). The M68HC08 Family is based on the customer-specified integrated circuit
(CSIC) design strategy. All MCUs in the family use the enhanced M68HC08 central processor unit
(CPU08) and are available with a variety of modules, memory sizes and types, and package types.
The information contained is this document pertains to the MC68HC908KX2 and the MC68HC08KX8 with
the exceptions found in:
1.2 Features
Features include:
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for
Freescale Semiconductor
unauthorized users.
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Appendix A MC68HC908KX2
Appendix B MC68HC08KX8
High-performance M68HC08 architecture
Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
Maximum internal bus frequencies of:
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Internal oscillator requiring no external components:
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Eight Kbytes of on-chip, in-circuit programmable FLASH memory
FLASH program memory security
On-chip programming firmware for use with host personal computer which does not require high
voltage for entry
192 bytes of on-chip random-access memory (RAM)
16-bit, 2-channel timer interface (TIM) module
4-channel, 8-bit, analog-to-digital converter (ADC) with high-voltage reference (V
bonded to V
8 MHz at 5.0 V
4 MHz at 3.0 V
Software selectable bus frequencies
25 percent accuracy with trim capability to 2 percent
Clock monitor
Option to allow use of external clock source or external crystal/ceramic resonator
DD
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
pin
(1)
REFH
) double
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