參數(shù)資料
型號： MC68HC705C8
廠商： Motorola, Inc.
英文描述： PROGRAMMING REFRERENCE GUIDE
中文描述： 編程REFRERENCE指南
文件頁數(shù)： 16/108頁
文件大?。?/td> 718K
代理商： MC68HC705C8
Introduction
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
16
Freescale Semiconductor
1.4.1 V
DD
and V
SS
V
DD
and V
SS
are the power supply and ground pins. The MCU operates from a single power supply.
Very fast signal transitions occur on the MCU pins, placing high, short-duration current demands on the
power supply. To prevent noise problems, take special care, as
Figure 1-3
shows, by placing the bypass
capacitors as close as possible to the MCU. C2 is an optional bulk current bypass capacitor for use in
applications that require the port pins to source high current levels.
Figure 1-3. Bypassing Layout Recommendation
1.4.2 OSC1 and OSC2
The OSC1 and OSC2 pins are the connections for the on-chip oscillator. The oscillator can be driven by
any of the following:
1.
Standard crystal (See
Figure 1-4
and
Figure 1-5
.)
2.
Ceramic resonator (See
Figure 1-6
and
Figure 1-7
.)
3.
Resistor/capacitor (RC) oscillator (Refer to
Appendix A MC68HRC705KJ1
.)
4.
External clock signal as shown in (See
Figure 1-8
.)
5.
Low speed (32 kHz) crystal connections (Refer to
Appendix B MC68HLC705KJ1
.)
The frequency, f
OSC
, of the oscillator or external clock source is divided by two to produce the internal
operating frequency, f
OP
.
1.4.2.1 Crystal Oscillator
Figure 1-4
and
Figure 1-5
show a typical crystal oscillator circuit for an AT-cut, parallel resonant crystal.
Follow the crystal supplier’s recommendations, as the crystal parameters determine the external
component values required to provide reliable startup and maximum stability. The load capacitance
values used in the oscillator circuit design should include all stray layout capacitances.
To minimize output distortion, mount the crystal and capacitors as close as possible to the pins. An
internal startup resistor of approximately 2 M
is provided between OSC1 and OSC2 for the crystal
oscillator as a programmable mask option.
NOTE
Use an AT-cut crystal and not an AT-strip crystal because the MCU can
overdrive an AT-strip crystal.
C1
C2
MCU
C1
0.1
μ
F
C2
V+
+
V
DD
V
SS
V
DD
V
SS
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參數(shù)描述
MC68HC705C8AB 功能描述:IC MCU 8K OTP 2.1MHZ 42-SDIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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MC68HC705C8ACFN 功能描述:IC MCU 4MHZ 8K OTP 44-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
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