参数资料
型号: MC68HC705E5DW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 111/148页
文件大小: 620K
代理商: MC68HC705E5DW
Phase-Locked Loop (PLL) Synthesis
Operation During Stop Mode
MC68HC705E5 Rev. 1.0
General Release Specification
MOTOROLA
Phase-Locked Loop (PLL) Synthesis
65
NON-DISCLOSURE
AGREEMENT
REQUIRED
9.4 Operation During Stop Mode
The PLL is switched to low-frequency bus rate and is temporarily turned
off when STOP is executed. Coming out of stop mode with an external
IRQ, the PLL is turned on with the same configuration it had before going
into STOP, with the exception of BCS which is reset. Otherwise, the PLL
control register is in the reset condition.
9.5 Noise Immunity
The MCU should be insulated as much as possible from noise in the
system. We recommend the following steps be taken to help prevent
problems due to noise injection.
1. The application environment should be designed so that the MCU
is not near signal traces which switch often, such as a clock signal.
2. The oscillator circuit for the MCU should be placed as close as
possible to the OSC1 and OSC2 pins on the MCU.
3. All power pins should be filtered (to minimize noise on these
signals) by using bypass capacitors placed as close as possible to
the MCU.
See the application note
Designing for Electromagnetic Compatibility
(EMC) with HCMOS Microcontrollers available through the Motorola
Literature Distribution Center, Motorola document number AN1050/D.
相关PDF资料
PDF描述
MC68HC705G1B 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP56
MC68HC705G1FU 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP64
MC68HC05G1B 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
MC68HC705JB2DW 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDSO20
MC68HC705JB2P 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP20
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