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参数资料
| 型号： | MC68HC11D3CFB1 |
| 厂商： | ABILIS SYSTEMS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 1 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | 10 X 10 MM, QFP-44 |
| 文件页数： | 64/124页 |
| 文件大小： | 6875K |
| 代理商： | MC68HC11D3CFB1 |
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OPERATING MODES AND ON-CHIP MEMORY
4-10
TECHNICAL DATA
4.2.2.3 OPTION Register
The 8-bit special-purpose OPTION register sets internal system configuration options
during initialization. The time protected control bits, IRQE, DLY, and CR[1:0] can be
written to only once after a reset and then they become read-only. This minimizes the
possibility of any accidental changes to the system configuration.
*Can be written only once in first 64 cycles out of reset in normal modes, or at any time in special modes
Bits [7:6] and 2 — Not implemented
Always read zero
IRQE — IRQ Select Edge Sensitive only
0 = IRQ is configured for level sensitive operation
1 = IRQ is configured for edge sensitive only operation
DLY — Enable Oscillator Startup Delay
0 = The oscillator startup delay coming out of STOP is bypassed and the MCU re-
sumes processing within about four bus cycles.
1 = A delay of approximately 4000 E-clock cycles is imposed as the MCU is started
up from the STOP power-saving mode. This delay allows the crystal oscillator
to stabilize.
CME — Clock Monitor Enable
Refer to SECTION 5 RESETS AND INTERRUPTS.
CR[1:0] — COP Timer Rate Select Bits
The internal E clock is first divided by 215 before it enters the COP watchdog system.
These control bits determine a scaling factor for the watchdog timer. Refer to SEC-
OPTION — System Configuration Options
$0039
Bit 7
654321
Bit 0
0
IRQE*
DLY*
CME
0
CR1*
CR0*
RESET:
00010000
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数 |
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| MC68HC11D3CFB3 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11D3CFB4 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11D3CFN | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11D3CFN1 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11D3CFN2 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Microcontrollers |
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