參數(shù)資料
型號(hào): 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): 37/160頁
文件大?。?/td> 2076K
代理商: MC68HC705C9ACP
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
Memory
37
Advance Information — MC68HC705C9A
Section 2. Memory
2.1 Contents
2.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
2.3
RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
2.4
EPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
2.5
EPROM Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
2.6
ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
2.7
I/O Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
2.2 Introduction
The MCU has a 16-Kbyte memory map when configured as either an
MC68HC05C9A or an MC68HC05C12A. The memory map consists of
registers (I/O, control, and status), user RAM, user EPROM, bootloader
ROM, and reset and interrupt vectors as shown in
Figure 2-1
and
Figure 2-2
.
When configured as an MC68HC05C9A, two control bits in the option
register ($3FDF) allow the user to switch between RAM and EPROM at
any time in two special areas of the memory map, $0020-$004F (48
bytes) and $0100-$017F (128 bytes). When configured as an
MC68HC05C12A, the section of the memory map from $0020 to $004F
is fixed as EPROM and the section from $0100 to $0FFF becomes
unused.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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