參數(shù)資料
型號： MC68HC705JB2DW
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDSO20
封裝： SOIC-20
文件頁數(shù)： 4/128頁
文件大?。?/td> 2493K
代理商： MC68HC705JB2DW
August 28, 1998
GENERAL RELEASE SPECIFICATION
EPROM
REV 1.1
11-1
SECTION 11
EPROM
This section describes erasable programmable read-only memory (EPROM)
programming.
11.1
EPROM
The on-chip user EPROM consists of 2048 bytes of EPROM from $1600 to
$1DFF and 16 bytes of user vectors from $1FF0 to $1FFF.
The bootloader ROM and vectors are located from $1E00 to $1FEF.
12 of the user vectors, $1FF4-$1FFF, are dedicated to reset and interrupt vectors.
The four remaining locations, $1FF0-$1FF3, are reserved for test functions. The
Mask Option Register is located at $01FF.
11.2
BOOTLOADER
This program (contained in an on-chip boot ROM) handles copying of user code
from an external EPROM into the on-chip EPROM. The bootloader function does
not have to be done from an EPROM, but can be done from a host.
11.2.1 Bootloader Mode
Bootloader mode is entered upon the rising edge of RESET if the IRQ/VPP pin is
at VTST and the PB0 pin is at logic zero. The bootloader performs one
programming pass at 1ms per byte then does a verify pass.
The user code must be a one-to-one correspondence with the internal EPROM
addresses.
Table 11-1. Operation Mode Condition After Reset
RESET Pin
IRQ/VPP
PB0/TCAP
MODE
VSS to VDD
Single-Chip (Normal)
VTST
VSS
Bootloader
VTST = 2 x VDD
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)PDF資料
PDF描述
MC68HC705JB2P 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP20
MC68HC705JB4P 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP28
MC68HC705K1CDW 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDSO16
MC68HC705K1CP 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP16
MC68HC705K1S 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, CDIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MC68HC705JP7CP 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HC705K1CDW 制造商:Motorola Inc 功能描述:
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