參數(shù)資料
型號: MCHC11F1CFNE2R
廠商: Freescale Semiconductor
文件頁數(shù): 69/158頁
文件大小: 0K
描述: MCU 8BIT 1KRAM 512EE 68-PLCC
標(biāo)準(zhǔn)包裝: 250
系列: HC11
核心處理器: HC11
芯體尺寸: 8-位
速度: 2MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 30
程序存儲器類型: ROMless
EEPROM 大?。?/td> 512 x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.75 V ~ 5.25 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 68-LCC(J 形引線)
包裝: 帶卷 (TR)
PIN DESCRIPTIONS
MC68HC11F1
2-4
TECHNICAL DATA
The XTAL pin is normally left unterminated when an external CMOS compatible clock
is connected to the EXTAL pin. However, a 10 k
to 100 k load resistor connected
from the XTAL output to ground can be used to reduce RFI noise emission.
The XTAL output is normally used to drive a crystal. The XTAL output can be buffered
with a high-impedance buffer, or it can be used to drive the EXTAL input of another
M68HC11 device. Refer to Figure 2-6.
In all cases, use caution when designing circuitry associated with the oscillator pins.
Load capacitances shown in the oscillator circuits include all stray layout capacitanc-
Figure 2-4 Common Crystal Connections
Figure 2-5 External Oscillator Connections
Figure 2-6 One Crystal Driving Two MCUs
EXTAL
XTAL
25 pF
*
Values include all stray capacitances.
*
25 pF
*
10M
4 x E
CRYSTAL
MCU
NC OR
10 k – 100 k
LOAD
XTAL
EXTAL
MCU
CMOS-COMPATIBLE
EXTERNAL
OSCILLATOR
EXTAL
XTAL
25 pF
*
Values include all stray capacitances.
*
25 pF
*
10M
4 x E
CRYSTAL
NC OR
10 k – 100 k
LOAD
XTAL
EXTAL
SECOND
220
MCU
FIRST
MCU
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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