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參數(shù)資料
型號(hào): MC68HC705J1ACPE
廠商: Freescale Semiconductor
文件頁數(shù): 99/162頁
文件大小: 0K
描述: IC MCU 4MHZ 1.2K OTP 20-DIP
標(biāo)準(zhǔn)包裝: 18
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 4MHz
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 14
程序存儲(chǔ)器容量: 1.2KB(1.2K x 8)
程序存儲(chǔ)器類型: OTP
RAM 容量: 64 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-DIP(0.300",7.62mm)
包裝: 管件
Memory
Mask Option Register
MC68HC705J1A — Rev. 4.0
Technical Data
Memory
Take these steps to program the mask option register:
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.
SOSCD — Short Oscillator Delay Bit
The SOSCD bit controls the oscillator stabilization counter. The
normal stabilization delay following reset or exit from stop mode is
4064 tcyc. Setting SOSCD enables a short oscillator stabilization
delay.
1 = Short oscillator delay enabled
0 = Short oscillator delay disabled
EPMSEC — EPROM Security Bit
The EPMSEC bit controls access to the EPROM/OTPROM.
1 = External access to EPROM/OTPROM denied
0 = External access to EPROM/OTPROM not denied
OSCRES — Oscillator Internal Resistor Bit
The OSCRES bit enables a 2-M
internal resistor in the oscillator
circuit.
1 = Oscillator internal resistor enabled
0 = Oscillator internal resistor disabled
NOTE:
Program the OSCRES bit to logic 0 in devices using RC oscillators.
Address:
$07F1
Bit 7
6
54321
Bit 0
Read:
SOSCD
EPMSEC OSCRES
SWAIT
SWPDI
PIRQ
LEVEL
COPEN
Write:
Reset:
Unaffected by reset
Figure 2-4. 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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