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MC908QC8VDSER Datasheet(PDF) 17 Page - Freescale Semiconductor, Inc |
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MC908QC8VDSER Datasheet(HTML) 17 Page - Freescale Semiconductor, Inc |
17 / 274 page MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 2 Freescale Semiconductor 17 Chapter 1 General Description 1.1 Introduction The MC68HC908QC16, MC68HC908QC8, and MC68HC908QC4 are members of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs). 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. 0.4 1.2 Features Features include: • High-performance M68HC08 CPU core • Fully upward-compatible object code with M68HC05 Family • 5.0-V and 3.3-V operating voltages (VDD) • 8-MHz internal bus operation at 5 V, 4-MHz at 3.3 V • Trimmable internal oscillator – Software selectable 1 MHz, 2 MHz, 3.2 MHz, or 6.4 MHz internal bus operation – 8-bit trim capability – ± 25% untrimmed – Trimmable to approximately 0.4%(1) • Software selectable crystal oscillator range, 32–100 kHz, 1–8 MHz, and 8–32 MHz • Software configurable input clock from either internal or external source • Auto wakeup from STOP capability using dedicated internal 32-kHz RC or bus clock source • FLASH security(2) • On-chip in-application programmable FLASH memory (with internal program/erase voltage generation) Table 1-1. Summary of Device Variations Device FLASH Memory Size RAM Pin Count MC68HC908QC16 16 Kbytes 512 bytes 16, 20, 28 pins MC68HC908QC8 8 Kbytes 384 bytes 16, 20, 28 pins MC68HC908QC4 4 Kbytes 384 bytes 16, 20, 28 pins 1. See 19.11 Oscillator Characteristics for internal oscillator specifications 2. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for unauthorized users. |
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