MC9S12T64 Datasheet, PDF (243/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
CALRAM 2K
Functional Description
EEPROM module is in the flash super user mode and the FADDR
(FADDRHI and FADDRLO) and FDATA (FDATAHI and FDATALO)
become visible in the memory map. These registers are used to erase
or to program the Flash EEPROM array which is overlapped by the
CALRAM. If the user needs to erase or to program a Flash EEPROM
block while the CPU is running, it is necessary to make sure that CPU is
running from another Flash EEPROM block or from another memory
(e.g. RAM). During erasing or programming a Flash EEPROM block, the
block cannot be read due to Flash EEPROM limitations.
CALRAM 2K
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MC9S12T64Revision 1.1.1