MC9S12T64 Datasheet, PDF (247/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
CALRAM 2K
Functional Description
6. Program data contained in the CALRAM with the Flash EEPROM.
7. Clear FSUM in the register CALCFG and clear CRAMON in the
register INITCRM.
After the FSUM bit is cleared, the Flash EEPROM module exits the flash
super user mode and the registers FADDR and FDATA become invisible
in the memory map.
When the CRAMON bit is cleared, the CALRAM array disappears from
the 64K byte address space and the calibrated data can be read from
Flash EEPROM directly. Figure 36 shows the memory map obtained
after calibration.
NOTE: Writes to the INITCRM register take one cycle to go into effect.
$0000
2K bytes
Calibrated Data
Flash EEPROM
Block 1
$8000
Flash EEPROM
Block 0
$FFFF
Calibrated Data programmed
into the Flash EEPROM is shown
MCU Control program is running from
this block
Figure 36 Remove CALRAM from memory mapping
8. If needed, continue calibration by repeating from the step 2.
CALRAM 2K
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MC9S12T64Revision 1.1.1