參數(shù)資料
型號： MC68HC705E5P
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝： PLASTIC, DIP-28
文件頁數(shù)： 10/148頁
文件大?。?/td> 3554K
代理商： MC68HC705E5P
MC68HC705E5 — Rev. 1.0
General Release Specification
User EPROM
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC705E5
Section 13. User EPROM
13.1 Contents
13.2 Introduction
The user EPROM consists of 5120 bytes of EPROM from $0B00 to
$1EFF and 16 bytes of user vectors from $1FF0 to $1FFF.
The bootloader ROM and vectors are located from $1F01 to $1FEF.
All of the user vectors, $1FF2 through $1FFF, are dedicated to reset and
interrupt vectors. Location $1F00 is the mask option register (MOR).
13.3 Bootloader Mode
Bootloader mode is entered upon the rising edge of RESET if the IRQ is
at VTST and the PB1 pin is at logic 1. The bootloader code resides in the
ROM from $1F01 to $1FEF. This program handles copying of user code
from an external EPROM into the on-chip EPROM. The bootload
function does not have to be done from an external EPROM, but it may
be done from a host.
The user code must be a one-to-one correspondence with the internal
EPROM addresses.
NOTE:
The MCU designer must disable the COP hardware in bootloader mode.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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