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HC705RC17GRS/D 데이터시트(PDF) 28 Page - NXP Semiconductors

부품명 HC705RC17GRS/D
상세설명  The MC68HC705RC17 is a general-purpose, low-cost addition to the M68HC05 Family of microcontroller units (MCUs) and is suitable for remote control applications.
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

HC705RC17GRS/D 데이터시트(HTML) 28 Page - NXP Semiconductors

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Memory
General Release Specification
MC68HC705RC17 — Rev. 2.0
Memory
2.3.1 EPROM
The user EPROM consists of 15,936 bytes of EPROM from $0180 to
$3FAF and 14 bytes of user vectors from $3FF2 to $3FFF.
The bootloader ROM and vectors are located from $0020 to $00AF and
$0100 to $170 in boot mode only, and from $3FB0 to $3FEF in both boot
mode and burn-in mode.
Ten of the user vectors, $3FF6 thorough $3FFF, are dedicated to reset
and interrupt vectors. The four remaining locations, $3FF2 through
$3FF5, are general-purpose user EPROM locations. The mask option
registers (MOR1 and MOR2) are located at $3FF0 and $3FF1.
2.3.2 EPROM Security
The MC68HC705RC17 contains special circuitry to prevent accessing
the EPROM in non-user mode. Emulation will not be affected by this
change.
Security is controlled by a security bit in the MOR register. It is intended
to be programmed while the users are programming their code. This will
inhibit reading of the EPROM in all modes other than user mode.
$18
Reserved
R
R
R
R
R
R
R
R
$19
Reserved
R
R
R
R
R
R
R
R
$1A
Reserved
R
R
R
R
R
R
R
R
$1B
Reserved
R
R
R
R
R
R
R
R
$1C
Reserved
R
R
R
R
R
R
R
R
$1D
Reserved
R
R
R
R
R
R
R
R
$1E
Reserved
R
R
R
R
R
R
R
R
$1F
Reserved
R
R
R
R
R
R
R
R
R
= Reserved
Addr
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Figure 2-2. I/O Registers (Sheet 2 of 2)
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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