參數(shù)資料
型號: MC68HC05P9AP
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 68/158頁
文件大?。?/td> 3885K
代理商: MC68HC05P9AP
Pin Descriptions
Pin Functions
Pin Descriptions
NOTE:
Because the frequency stability of ceramic resonators is not as high as
that of crystal oscillators, using a ceramic resonator may degrade the
performance of the ADC.
RC Oscillator
The lowest cost oscillator is the
RC oscillator configuration
where a resistor is connected
between the two oscillator pins
as shown in Figure 6. The
internal startup resistor of
approximately 2 M
is not
recommended between OSC1
and OSC2 for the RC-type
oscillator.
External Clock
Connections
An external clock from another
CMOS-compatible device can
drive the OSC1 input, with the
OSC2 pin unconnected, as
Figure 7 shows.
RESET
A logic 0 on the RESET pin
forces the MCU to a known
startup state. The RESET pin
input circuit contains an internal
Schmitt trigger to improve noise
immunity.
IRQ
The IRQ pin has the following functions:
Applying asynchronous external interrupt signals
Applying VTST, the mode detection voltage
R
OSC1
OSC2
MCU
Figure 6. RC Oscillator
Connections
MCU
OSC1
OSC2
EXTERNAL
CMOS CLOCK
UNCONNECTED
Figure 7. External Clock
Connections
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關PDF資料
PDF描述
MC68HC05P9ACDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9AVDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9AMDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05P9ACP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05P9DWR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
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