Datasheet

EEPROM Memory
Technical Data MC68HC912DT128A — Rev 4.0
134 EEPROM Memory MOTOROLA
9.7 Shadow Word Mapping
The shadow word is mapped to location $_FC0 and $_FC1 when the
NOSHW bit in EEMCR register is zero. The value in the shadow word is
loaded to the EEMCR, EEDIVH and EEDIVL after reset. Table 9-4
shows the mapping of each bit from shadow word to the registers.
Table 9-4. Shadow word mapping
Shadow word location Register / Bit
$_FC0 bit 7 EEMCR / NOBDML
$_FC0, bit 6 EEMCR / NOSHW
$_FC0, bit 5
EEMCR / bit 5
(1)
1. Reserved for testing. Must be set to one in user application.
$_FC0, bit 4
EEMCR / bit 4
(1)
$_FC0, bit 3:2
not mapped
(2))
2. Reserved. Must be set to one in user application for future compatibility.
$_FC0, bit 1:0 EEDIVH / bit 1:0
$_FC1, bit 7:0 EEDIVCLK / bit 7:0
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cale Semiconductor,
I
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