Eeprom Non-Volatile Register; Eeprom Timebase Divider Register; Eeprom Non-Volatile Register (Eenvr) - Motorola MC68HC908AB32 Technical Data Manual

EEPROM

5.11.2.1 EEPROM Non-Volatile Register

NOTE:

5.11.3 EEPROM Timebase Divider Register

Technical Data
80
EEBP[3:0] — EEPROM Block Protection Bits
These bits prevent blocks of EEPROM array from being programmed
or erased.
1 = EEPROM array block is protected
0 = EEPROM array block is unprotected
Block Number (EEBPx)
EEBP0
EEBP1
EEBP2
EEBP3
The contents of this register is loaded into the EEPROM array
configuration register (EEACR) after a reset.
This register is erased and programmed in the same way as an
EEPROM byte.
Address: $FE1C
Bit 7 6
Read:
CON3 CON2
Write:
Reset: Unaffected by reset; $FF when blank; factory programmed $10
Note: Non-volatile EEPROM register; write by programming.
Figure 5-4. EEPROM Non-Volatile Register (EENVR)
The EENVR is factory programmed with $10.
The 16-bit EEPROM timebase divider register consists of two 8-bit
registers: EEDIVH and EEDIVL. The 11-bit value in this register is used
to configure the timebase divider circuit to obtain the 35µs timebase for
EEPROM control.
EEPROM
Address Range
$0800–$087F
$0880–$08FF
$0900–$097F
$0980–$09FF
5 4 3
CON1 EEBP3
EEPRTCT
2 1 Bit 0
EEBP2 EEBP1 EEBP0
MC68HC908AB32 Rev. 1.0
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MOTOROLA