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参数资料
| 型号： | MC9SA256BCFUR2 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | QFP-80 |
| 文件页数： | 100/102页 |
| 文件大小： | 1050K |
| 代理商： | MC9SA256BCFUR2 |
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Motorola : Semiconductors : Microcontrollers : Products : 16-Bit (HCS12, M68HC12, DSP56800, M68HC16) : HCS12 Family : MC9S12A256B
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Other Info
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MC9S12A256B : 16-Bit
Microcontroller
The MC9S12A256 microcontroller unit (MCU) is a 16-bit device composed of standard
on-chip peripherals including a 16-bit central processing unit (HCS12 CPU), 256K bytes of
Flash EEPROM, 12K bytes of RAM, 4K bytes of EEPROM, two asynchronous serial
communications interfaces (SCI), three serial peripheral interfaces (SPI), an 8-channel IC/OC
enhanced capture timer, two 8-channel, 10-bit analog-to-digital converters (ADC), an 8-channel
pulse-width modulator (PWM), 29 discrete digital I/O channels (Port A, Port B, Port K and
Port E), 20 discrete digital I/O lines with interrupt and wakeup capability and an Inter-IC Bus.
System resource mapping, clock generation, interrupt control and bus interfacing are managed
by the System Integration Module (SIM). The MC9S12A256 has full 16-bit data paths
throughout. However, the external bus can operate in an 8-bit narrow mode so single 8-bit wide
memory can be interfaced for lower cost systems. The inclusion of a PLL circuit allows power
consumption and performance to be adjusted to suit operational requirements.
Note: documentation for this device has been structured in a modular form. For the complete
set of user guides, download the ZIP file.
MC9S12A256B Features
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HCS12 Core
16-bit HCS12 CPU
Upward compatible with M68HC11 instruction set
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Interrupt stacking and programm's model identical to M68HC11
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Instruction queue
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Enhanced indexed addressing
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MEBI (Multiplexed External Bus Interface)
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MMC (Module Mapping Control)
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INT (Interrupt Control)
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BKP (Breakpoints)
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BDM (Background Debug Mode)
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CRG (low current oscillator, PLL, reset, clocks, COP watchdog, real time interrupt, clock monitor)
MC9S12A256B Product Summary Page
http://e-www.motorola.com/webapp/sps/site/pro...eId=03M0ym4t3ZGM0zGQK100&releaseLevel=Preview (1 of 6) [11/11/2002 9:30:45 AM]
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