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HC705RC17GRS/D Datasheet(PDF) 29 Page - NXP Semiconductors

Part # HC705RC17GRS/D
Description  The MC68HC705RC17 is a general-purpose, low-cost addition to the M68HC05 Family of microcontroller units (MCUs) and is suitable for remote control applications.
PDF  126 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

HC705RC17GRS/D Datasheet(HTML) 29 Page - NXP Semiconductors

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Memory
Input/Output Programming
MC68HC705RC17 — Rev. 2.0
General Release Specification
Memory
2.3.3 RAM
The user RAM consists of 352 bytes of a shared stack area. The RAM
starts at address $0020 and ends at address $017F. The stack begins
at address $00FF. The stack pointer can access 64 bytes of RAM in the
range $00FF to $00C0.
NOTE:
Using the stack area for data storage or temporary work locations
requires care to prevent it from being overwritten due to stacking from an
interrupt or subroutine call.
2.3.4 Bootloader ROM
Addresses $0020 to $00AF, $0100 to $0170, and $3FB0 to $3FEF are
reserved ROM addresses that contain the instructions for the bootloader
functions. (See Section 11. EPROM.)
2.4 Input/Output Programming
In user mode, 18 lines are arranged as three 8-bit I/O ports. These ports
are programmable as either inputs or outputs under software control of
the data direction registers. For detailed information, refer to Section 7.
Parallel Input/Output (I/O).
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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