Freescale Semiconductor MCF51QE128RM manual Ram, Flash, Intcsfrc, Intccfrc

Models: MCF51QE128RM

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Chapter 4 Memory

Table 4-7. V1 ColdFire Interrupt Controller Memory Map (continued)

Address

Register Name

msb

 

 

Bit Number

 

 

lsb

0x(FF)FF_FFDC–

Reserved

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFDD

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFDE

INTC_SFRC

0

0

 

 

SET

 

 

 

0x(FF)FF_FFDF

INTC_CFRC

0

0

 

 

CLR

 

 

 

0x(FF)FF_FFE0 INTC_SWIACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFE1–

Reserved

 

0x(FF)FF_FFE3

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFE4 INTC_LVL1IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFE5–

Reserved

 

0x(FF)FF_FFE7

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFE8 INTC_LVL2IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFE9–

Reserved

 

0x(FF)FF_FFEB

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFEC INTC_LVL3IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFED–

Reserved

 

0x(FF)FF_FFEF

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFF0 INTC_LVL4IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFF1–

Reserved

 

0x(FF)FF_FFF3

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFF4 INTC_LVL5IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFF5–

Reserved

 

0x(FF)FF_FFF7

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFF8 INTC_LVL6IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFF9–

Reserved

 

0x(FF)FF_FFFB

 

 

 

 

 

 

 

 

 

 

 

0x(FF)FF_FFFC INTC_LVL7IACK

0

 

 

 

VECN

 

 

 

0x(FF)FF_FFFD–

Reserved

 

0x(FF)FF_FFFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.3RAM

The MCF51QE128/64/32 includes up to 8 Kbytes of static RAM. RAM is most efficiently accessed using the A5-relative addressing mode (address register indirect with displacement mode). Any single bit in this area can be accessed with the bit manipulation instructions (BCLR, BSET,etc.).

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 (VRAM).

4.4Flash

The flash memory is intended primarily for program storage and read-only data. In-circuit programming allows the operating program to be loaded into the flash memory after final assembly of the application product. It is possible to program the entire array through the single-wire background debug interface.

Because no special voltages are needed for flash erase and programming operations, in-application programming is also possible through other software-controlled communication paths.

MCF51QE128 MCU Series Reference Manual, Rev. 3

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Freescale Semiconductor MCF51QE128RM manual Ram, Flash, Intcsfrc, Intccfrc