MC908MR8MPE Freescale Semiconductor, MC908MR8MPE Datasheet - Page 63

• Manufacturer Part Number: MC908MR8MPE
• Description: IC MCU 8BIT 8K FLASH 28-PDIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908MR8MPE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 12
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.3.2 FLASH Block Protect Register
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
The 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] — Block Protect Register Bits
Reset:
dress:
Read:
Write:
Ad-
These eight bits represent bits [13:6] of a 16-bit memory address.
Bits[15:14] are logical 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-byte page boundaries) within the FLASH
memory.
$FF7E
U= Unaffected by reset. Initial value from factory is 1.
Write to this register by a programming sequence to the FLASH memory.
Figure 4-3. FLASH Block Protect Register (FLBPR)
BPR7
Bit 7
U
BPR6
FLASH Memory
U
6
BPR5
U
5
BPR4
U
4
BPR3
U
3
FLASH Programming Algorithm
BPR2
U
2
BPR1
FLASH Memory
U
1
Technical Data
BPR0
Bit 0
U
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