參數(shù)資料
型號: MC68HLC705KJ1C
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 80/144頁
文件大?。?/td> 1575K
代理商: MC68HLC705KJ1C
Technical Data
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 3.0
40
Memory
MOTOROLA
Memory
3.7 Mask Option Register
The mask option register (MOR) is an EPROM/OTPROM byte that
controls the following options:
COP watchdog (enable or disable)
External interrupt pin triggering (edge-sensitive only or edge- and
level-sensitive)
Port A external interrupts (enable or disable)
Port pulldown resistors (enable or disable)
STOP instruction (stop mode or halt mode)
Crystal oscillator internal resistor (enable or disable)
EPROM security (enable or disable)
Short oscillator delay (enable or disable)
Take the following steps to program the mask option register (MOR):
1. Apply the programming voltage, VPP, to the IRQ/VPP pin.
2. Write to the MOR.
3. Set the MPGM bit and wait for a time, tMPGM.
4. Clear the MPGM bit.
5. Reset the MCU.
Address:
$07F1
Bit 7
6
54321
Bit 0
Read:
SOSCD
EPMSEC OSCRES
SWAIT
SWPDI
PIRQ
LEVEL
COPEN
Write:
Reset:
Unaffected by reset
Figure 3-4. Mask Option Register (MOR)
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