MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 76

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Electrically Erasable Programmable ROM
6.4.7 EEPROM Non-Volatile Register and EEPROM Array Configuration Register
Advance Information
76
Address:
Address:
These registers configure the EEPROM array blocks for programming
purposes. EEACR loads its contents from the EENVR register at reset
and upon any read of the EENVR register.
EERA — EEPROM Redundant Array Bit
EEBP2:EEBP0 — EEPROM Block Protection Bits
Reset:
Electrically Erasable Programmable ROM (EEPROM)
Read:
Write:
Read:
Write:
This programmable/erasable/readable bit in EENVR and read-only bit
in EEACR configures the array in redundant mode. Reset loads
EERA from EENVR to EEACR.
These programmable/erasable/readable bits in EENVR and
read-only bits in EEACR select blocks of EEPROM array from being
programmed or erased. Reset loads EEBP[2:0] from EENVR to
EEACR. See
1 = EEPROM array in redundant mode configuration
0 = EEPROM array in normal mode configuration
1 = EEPROM array block protected
0 = EEPROM array block unprotected
Figure 6-2. EEPROM Array Control Register (EEACR)
Figure 6-3. EEPROM Non-Volatile Register (EENVR)
EENVR
$FE1C
$FE1F
EERA
EERA
Bit 7
Bit 7
PV
R
R
R
= Reserved
= Reserved
6.4.3 EEPROM Block
R
R
R
R
R
6
6
R
R
R
R
R
5
5
PV = Programmed value or 1 in the erased state.
R
R
R
R
R
4
4
Protection.
EENVR
PV
R
R
R
3
3
MC68HC708AS48
EENVR
EEBP2
EEBP2
PV
R
2
2
EENVR
EEBP1
EEBP1
PV
R
1
1
MOTOROLA
—
Rev. 4.0
EENVR
EEBP0
EEBP0
Bit 0
Bit 0
PV
R