MC68HC908GR8CDW Freescale Semiconductor, MC68HC908GR8CDW Datasheet - Page 165
MC68HC908GR8CDW
Manufacturer Part Number
MC68HC908GR8CDW
Description
IC MCU 8K FLASH 8MHZ 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908GR4CFAE.pdf
(408 pages)
Specifications of MC68HC908GR8CDW
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
17
Program Memory Size
7.5KB (7.5K x 8)
Program Memory Type
FLASH
Ram Size
384 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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11.8.1 FLASH Block Protect Register
MC68HC908GR8 — Rev 4.0
MOTOROLA
Address:
The FLASH block protect register (FLBPR) is implemented as a byte
within the FLASH memory, and therefore can only be written during a
programming sequence of the FLASH memory. The value in this register
determines the starting location of the protected range within the FLASH
memory.
BPR[7:0] — FLASH Block Protect Bits
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
These eight bits represent bits [13:6] of a 16-bit memory address.
Bits [15:14] are logic 1s and bits [5:0] are logic 0s.
The resultant 16-bit address is used for specifying the start address
of the FLASH memory for block protection. The FLASH is protected
from this start address to the end of FLASH memory, at $FFFF. With
this mechanism, the protect start address can be $XX00, $XX40,
$XX80, and $XXC0 (64 bytes page boundaries) within the FLASH
memory.
Start address of FLASH block protect
For More Information On This Product,
U = Unaffected by reset. Initial value from factory is 1.
Write to this register is by a programming sequence to the FLASH memory.
Figure 11-3. FLASH Block Protect Register (FLBPR)
$FF7E
BPR7
Bit 7
U
Figure 11-4. FLASH Block Protect Start Address
Go to: www.freescale.com
BPR6
U
Flash Memory
6
BPR5
U
5
1
1
BPR4
U
4
FLBPR value
16-bit memory address
BPR3
U
3
BPR2
U
2
FLASH Block Protection
0 0 0 0 0 0
BPR1
U
1
Technical Data
Flash Memory
BPR0
Bit 0
U
165
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