MPC821 datasheet(148/242 Pages) NXP

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Support Information

MPC8XXFADS Design Specification—Rev 0.1

PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE

TEA_ASSERTS = (!TEA~ & SyncTEA~.fb);" first clock of TEA~ asserted

CONTROL_REG_ENABLED = (ContRegEn~ == CONTROL_REG_ENABLE_ACTIVE);

FLASH_CONFIGURATION_ENABLED = (FlashCfgEn~ == FLASH_CONFIG_ENABLED_ACTIVE);

PCC_ENABLED = (PccEn~ == PCMCIA_ENABLE_ACTIVE);

NO_HOLD_OFF = 0;

HOLD_OFF_CONSIDERED = 1;

STATE_HOLD_OFF_CONSIDERED = (HoldOffConsidered.fb == HOLD_OFF_CONSIDERED);

STATE_NO_HOLD_OFF = (HoldOffConsidered.fb == NO_HOLD_OFF);

END_OF_FLASH_READ = !TA~ & !FlashCs~ & R_W~;" end of flash read cycle.

END_OF_OTHER_CYCLE = (!TA~ & FlashCs~ # " another access or

!TA~ & !FlashCs~ & !R_W~); " flash write

"* HOLD_OFF_PERIOD = (!R_W~ & !PD_FlashOe~.fb);

HOLD_OFF_PERIOD = (!R_W~ & !TD_FlashOe~.fb);

"******************************************************************************

"* Equations, state diagrams.

"******************************************************************************

"* #######

"* #

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"******************************************************************************

"* Reset Logic

"******************************************************************************

equations

Reset.oe = ResetEn;

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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