參數(shù)資料
型號: MC68HC705C9ACP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: Microcontrollers
中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 153/160頁
文件大?。?/td> 2076K
代理商: MC68HC705C9ACP
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
EPROM Programming
153
Advance Information — MC68HC705C9A
Appendix A. EPROM Programming
A.1 Contents
A.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
A.3
Bootloader Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
A.4
Bootloader Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
A.5
Programming Register (PROG) . . . . . . . . . . . . . . . . . . . . . . .154
A.2 Introduction
This section describes programming of the EPROM.
A.3 Bootloader Mode
Bootloader mode is entered upon the rising edge of RESET if the IRQ is
at V
TST
and the TCAP pin is at logic one. The bootloader code resides
in the ROM from $3F00 to $3FEF. 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.
Table A-1. Operating Modes
RESET
IRQ
TCAP
Mode
V
SS
to V
DD
V
TST
V
SS
to V
DD
V
DD
User
Bootloader
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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