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MC908QT2ACDWE Datasheet(PDF) 15 Page - Freescale Semiconductor, Inc

No. de Pieza. MC908QT2ACDWE
Descripción  M68HC08 Microcontrollers
Descarga  200 Pages
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Fabricante  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
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MC908QT2ACDWE Datasheet(HTML) 15 Page - Freescale Semiconductor, Inc

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MC68HC908QYA/QTA Family Data Sheet, Rev. 3
Freescale Semiconductor
15
Chapter 1
General Description
1.1 Introduction
The MC68HC908QY4A is a member 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-V and 3-V operating voltages (VDD)
8-MHz internal bus operation at 5 V, 4-MHz at 3 V
Trimmable internal oscillator
Software selectable 1 MHz, 2 MHz, or 3.2 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
On-chip in-application programmable FLASH memory
Internal program/erase voltage generation
Monitor ROM containing user callable program/erase routines
FLASH security(2)
Table 1-1. Summary of Device Variations
Device
FLASH
Memory Size
ADC
Pin
Count
MC68HC908QT1A
1536 bytes
8 pins
MC68HC908QT2A
1536 bytes
6 channel, 10 bit
8 pins
MC68HC908QT4A
4096 bytes
6 channel, 10 bit
8 pins
MC68HC908QY1A
1536 bytes
16 pins
MC68HC908QY2A
1536 bytes
6 channel, 10 bit
16 pins
MC68HC908QY4A
4096 bytes
6 channel, 10 bit
16 pins
1. See 16.11 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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