參數(shù)資料
型號: MC68HC05X4DW
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: SOIC-28
文件頁數(shù): 12/156頁
文件大?。?/td> 926K
代理商: MC68HC05X4DW
Introduction
MC68HC05X4 Rev 1.0
12
Introduction
MOTOROLA
Mask options on the MC68HC705X4
The same options as for the MC68HC05X4 are available on the
MC68HC705X4
device. These options must be programmed into the
mask option register (MOR), at EPROM address $1F00, via the
bootloader mode prior to operating the device in single chip mode. The
MOR is latched in at reset in single chip mode to allow emulation of the
masked ROM part. It is recommended that all unused bits in this register
are written as ‘0’.
Mask option
register (MOR)
This register may
be written to only in bootloader mode.
DIV2 — Oscillator
division ratio
1 = Selects divide-by-2 option.
0 = Selects divide-by-10 option.
NOTE:
The divide-by-10 option is forced during t
MC68HC705X4).
PORL
(applies only to the
C OP — C omputer
operating
properly
enable/disable
1 = Disables COP.
0 = Enables COP.
Address:
$1F00
Bit 7
6
5
4
3
2
1
Bit 0
DIV2
0
0
COP
Reset:
0
0
0
0
Figure 2. Mask Option Register (MOR)
4-intro
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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