HC705C9AGRSSLASHD datasheet(34/157 Pages) NXP

No. de pieza	HC705C9AGRS/D

Descripción Electrónicos	General Release Specification

PDF	157 Pages

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Fabricante Electrónico	NXP [NXP Semiconductors]

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General Release Speciﬁcation

RAM

MC68HC705C9A — Rev. 2.0

Memory

2.3 RAM

The main user RAM consists of 176 bytes at $0050–$00FF. This RAM

area is always present in the memory map and includes a 64-byte stack

area. The stack pointer can access 64 bytes of RAM in the range $00FF

down 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.

In MC68HC05C9A configuration, two additional RAM areas are

available at $0020–$004F (48 bytes) and $0100–$017F (128 bytes)

(see Figure 2-1 and Figure 2-2.) These may be accessed at any time

by setting the RAM0 and RAM1 bits, respectively, in the C9A option

(MC68HC05C9A Mode Only) for additional information.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

HC705C9AGRS/D Datasheet(PDF) 34 Page - NXP Semiconductors