参数资料
型号: MC68HC705RC17P
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.097 MHz, MICROCONTROLLER, PDIP28
封装: PLASTIC, DIP-28
文件页数: 41/126页
文件大小: 3079K
代理商: MC68HC705RC17P
General Description
Signal Description
MC68HC705RC17 Rev. 2.0
General Release Specification
General Description
NON-DISCLOSURE
AGREEMENT
REQUIRED
An external clock should be applied to the OSC1 input with the OSC2 pin
not connected (see Figure 1-4 (b)). This setup can be used if the user
does not want to run the CPU with a crystal.
NOTE:
The PLL design requires a 32.768-kHz external frequency for proper
operation.
Figure 1-4. Oscillator Connections
1.5.4 RESET
This active-low pin is used to reset the MCU to a known startup state by
pulling RESET low. The RESET pin contains an internal Schmitt trigger
as part of its input to improve noise immunity. See Section 5. Resets.
1.5.5 LPRST
The LPRST pin is an active-low pin and is used to put the MCU into low-
power reset mode. In low-power reset mode the MCU is held in reset
with all processor clocks halted. See Section 5. Resets.
<
OSC1
OSC2
OSC1
OSC2
MCU
EXTERNAL CLOCK
UNCONNECTED
(a) Crystal/Ceramic Resonator
(b) External Clock Source
10 M
Oscillator Connections
Connections
30 pF
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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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