FreescaleMC9S08JM16血糖监视仪(BGM)解决方案  2012/3/1

         Freescale公司的MC9S08JM16是低成本高性能的HCS08系列MCU.CPU工作频率48MHz,内部总线频率24MHz,16KB在电路可编程的闪存,1KB RAM以及256BUSBRAM.外设包括有USB,ADC, ACMP, SCI, SPI, IIC, 定时器,KBI和RTC等.广泛应用在PC外设和I/O模块,照明控制系统,测试和测量设备,条形码扫描系统,病人监视系统,工业网络设备和POS打印机等.本文介绍了MC9S08JM16系列的主要特性,方框图,基本系统连接图以及S08JM16评估板主要特性,详细电路图和采用S08JM16的血糖监视仪方框图和所用的主要元器件.

MC9S08JM16 series MCUs are members of the low-cost, high-performance HCS08 family of 8-bit microcontroller units (MCUs). All MCUs in the family use the enhanced HCS08 core and are available with a variety of modules, memory sizes, memory types, and package types.

MC9S08JM16系列主要特性:

8-Bit HCS08 Central Processor Unit (CPU)

• 48 MHz HCS08 CPU (central processor unit)
• 24 MHz internal bus frequency
• HC08 instructionsetwith added BGND instruction
• Background debugging system
• Breakpoint capability to allow single breakpoint setting during in-circuit debugging (plus two more breakpoints in on-chip debug module)
• In-circuit emulator (ICE) debug module containing two comparators and nine trigger modes. Eight deep FIFO for storing change-of-flow addresses and event-only data. Debug module supports both tag and force breakpoints
• Support for up to 32 interrupt/reset sources

Memory Options

• Up to 16 KB of on-chip in-circuit programmable flash memory with block protection and security options
• Up to 1 KB of on-chip RAM
• 256 bytes of USB RAM

Clock Source Options

• Clock source options include crystal, resonator, external clock
• MCG (multi-purpose clock generator) — PLL and FLL; internal reference clock with trim adjustment

System Protection

• Optional computer operating properly (COP) reset with

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