參數(shù)資料
型號： MC68HC908JL8MFA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
封裝： PLASTIC, LQFP-32
文件頁數(shù)： 5/56頁
文件大?。?/td> 648K
代理商： MC68HC908JL8MFA
MC68HC908JL8SM/D
Mask Option Register (MOR)
MC68HC908JL8MC68HC908JK8
Figure 7. FLASH Block Protect Start Address
Mask Option Register (MOR)
The mask option register (MOR) is implemented as a byte within the FLASH
memory, and therefore it is programmed using a FLASH memory byte-
programming operation. This register is read after a power-on reset to
determine the type of oscillator selected.
OSCSEL — Oscillator Select Bit
1 = Crystal oscillator
0 = RC oscillator
Configuration Registers (CONFIG1, CONFIG2)
The configuration registers are used to initialize various options. The
configuration registers can each be written once after each reset. Most of the
configuration register bits are cleared during reset. Since the various options
affect the operation of the microcontroller unit (MCU) it is recommended that
these registers be written immediately after reset. The configuration registers
are located at $001E and $001F, and may be read at anytime.
Table 4. Examples of Protect Start Address
BPR[7:0]
Start of Address of Protect Range
$00–$70
The entire FLASH memory is protected.
$71 (0111 0001)$DC40 (1101 1100 0100 0000)
$72 (0111 0010)$DC80 (1101 1100 1000 0000)
$73 (0111 0011)
$DCC0 (1101 1100 1100 0000)
and so on...
$FD (1111 1101)$FF40 (1111 1111 0100 0000)
$FE (1111 1110)$FF80 (1111 1111 1000 0000)
$FF
The entire FLASH memory is not protected.
0
1
FLBPR VALUE
START ADDRESS OF
16-BIT MEMORY ADDRESS
PROTECTED FLASH BLOCK
0
$FFD0
Bit 7
6
54
32
1
Bit 0
OSCSEL
RR
R
RRR
Reset:
Erased:
U
1
U
1
U
1
U
1
U
1
U
1
U
1
U
1
R
= Reserved
U = Unaffected
Figure 8 Mask Option Register (MOR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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MC68HC908JL8MSPE 制造商:Freescale Semiconductor 功能描述:MCU - Rail/Tube
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MC68HC908KX2MDW 制造商:Freescale Semiconductor 功能描述: 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
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