參數(shù)資料
型號： MC68HC05X4CDW
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： HCMOS Microcontroller Unit
中文描述： 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝： PLASTIC, SOIC-28
文件頁數(shù)： 20/156頁
文件大?。?/td> 926K
代理商： MC68HC05X4CDW
Modes of Operation and Pin Descriptions
MC68HC05X4 Rev 1.0
20
Modes of Operation and Pin Descriptions
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Bootloader
functions
The bootloader code deals with the copying of user code from an
external EPROM into the on-chip EPROM. The bootloader function can
only be used with an external EPROM. The bootloader performs a
programming pass and then does a verify pass
Pins PB3 and PB4 are used to select various bootloader functions,
including the programming mode (see
Figure 4
). Two other pins, PB1
and PB6, are used to drive the PROG and VERF LED outputs. While the
EPROM is being programmed the PROG LED flashes and when
programming is complete the VERF LED flashes
8-modes
F
Freescale Semiconductor, Inc.
n
.
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