MC68HC908MR8CP Freescale Semiconductor, MC68HC908MR8CP Datasheet - Page 64

• Manufacturer Part Number: MC68HC908MR8CP
• Description: IC MCU 8K FLASH 8MHZ PWM 28-DIP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908MR8CP

• 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 ~ 85°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

FLASH Memory
4.3.3 Low-Power Modes
4.3.3.1 Wait Mode
Technical Data
64
NOTE:
If all bits are erased, then all of the memory is available for erase and
program. The presence of a voltage V
block protection so that all of the memory, including the block protect
register, is open for program and erase operations.
The WAIT and STOP instructions will place the MCU in a low power-
consumption standby mode.
Putting the MCU into wait mode while the FLASH is in read mode does
not affect the operation of the FLASH memory directly, but there will not
be any memory activity since the CPU is inactive.
The WAIT instruction should never be executed while performing a
program or erase operation on the FLASH. When the MCU is put into
wait mode, the charge pump for the FLASH is disabled so that either a
program or erase operation will not continue. If the memory is in either
program mode (PGM = 1, HVEN = 1) or erase mode (ERASE = 1,
HVEN = 1), then it will remain in that mode during wait.
Exiting from wait must now be done with a reset rather than an interrupt
because if exiting wait with an interrupt, the memory will not be in read
mode and the interrupt vector cannot be read from the memory.
$80 = The entire FLASH memory is protected.
$81 = Protected range: $E040–$FFFF
$82 = Protected range: $E080–$FFFF
$FE = Protected range: $FF80–$FFFF
$FF = Entire FLASH memory is not protected.
START ADDRESS OF
BLOCK PROTECT
↓
Figure 4-4. FLASH Block Protect Address
FLASH Memory
FLASH
↓
1
↓
1
FLBPR VALUE
16-BIT MEMORY ADDRESS
HI
on the IRQ pin will bypass the
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
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