DEMO9S08EL32AUTO Freescale Semiconductor, DEMO9S08EL32AUTO Datasheet - Page 46
![DEMO BOARD EL32 AUTO](/photos/37/58/375858/demo9s08sg32bd_sml.jpg)
DEMO9S08EL32AUTO
Manufacturer Part Number
DEMO9S08EL32AUTO
Description
DEMO BOARD EL32 AUTO
Manufacturer
Freescale Semiconductor
Type
MCUr
Datasheets
1.DEMO9S08EL32.pdf
(356 pages)
2.DEMO9S08EL32.pdf
(14 pages)
3.DEMO9S08EL32.pdf
(2 pages)
Specifications of DEMO9S08EL32AUTO
Contents
Board, Cable, CD and Documentation
Processor To Be Evaluated
MC9S08EL32
Data Bus Width
8 bit
Interface Type
RS-232, USB
Operating Supply Voltage
12 V
For Use With/related Products
MC9S08EL32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Chapter 4 Memory
4.4
The MC9S08EL32 Series and MC9S08SL16 Series includes static RAM. The locations in RAM below
0x0100 can be accessed using the more efficient direct addressing mode, and any single bit in this area can
be accessed with the bit manipulation instructions (BCLR, BSET, BRCLR, and BRSET). Locating the
most frequently accessed program variables in this area of RAM is preferred.
The RAM retains data when the MCU is in low-power wait, stop2, or stop3 mode. At power-on the
contents of RAM are uninitialized. RAM data is unaffected by any reset provided that the supply voltage
does not drop below the minimum value for RAM retention (V
For compatibility with M68HC05 MCUs, the HCS08 resets the stack pointer to 0x00FF. In the
MC9S08EL32 Series and MC9S08SL16 Series, it is usually best to reinitialize the stack pointer to the top
of the RAM so the direct page RAM can be used for frequently accessed RAM variables and
bit-addressable program variables. Include the following 2-instruction sequence in your reset initialization
routine (where RamLast is equated to the highest address of the RAM in the Freescale
Semiconductor-provided equate file).
When security is enabled, the RAM is considered a secure memory resource and is not accessible through
BDM or through code executing from non-secure memory. See
description of the security feature.
46
RAM
LDHX
TXS
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
#RamLast+1
;point one past RAM
;SP<-(H:X-1)
RAM
Section 4.5.9,
).
“Security”, for a detailed
Freescale Semiconductor
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