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參數(shù)資料
| 型號(hào)： | MC68HC705K1 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 中文描述： | 8位微控制器單元（MCU）。（8位微控制器） |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大小： | 98K |
| 代理商： | MC68HC705K1 |
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Application Note
Migrating to the MC68HC705KJ1
AN1746
MOTOROLA
11
Clock
The KJ1 has different clock circuitry than the K1. The main difference is
the RC clock option. The available clocking options on the KJ1 are listed
in
Table 2
.
If you are using a crystal or ceramic resonator and want to use the
internal feedback resistor, the OSCRES bit in the mask option register
(MOR) must be set to 1. This enables the 2-M
feedback resistor. The
KJ1 has the option of using a 32-kHz crystal. Consult the KJ1 databook
about how to connect a 32-kHz crystal to the KJ1 properly.
The RC option on the KJ1 is quite different from the K1. The RC
oscillator has two options:
For more accurate clocks, use an external resistor between the
OSC1 and OSC2 pins. Do not turn on the internal feedback
resistor. Make sure the OSCRES bit in the MOR is 0.
For maximum cost reduction, the RC oscillator can utilize the
internal resistor and allow the chip to be driven with no external
components. This is also the least accurate way to clock the chip.
To use this option, make sure that the OSCRES bit in the MOR
is 1.
Like the K1, the KJ1 can be driven by an external clocking source also.
Table 2. KJ1 Clock Options
Clock Option
Comments
Part Number
Crystal oscillator
Internal feedback resistor
configured in MOR
MC68HC705KJ1
Crystal oscillator (32 kHz)
Do not use internal
feedback resistor
MC68HLC705KJ1
Ceramic resonator
Internal feedback resistor
configured in MOR
MC68HC705KJ1
RC oscillator
Uses either external or
internal resistor
MC68HRC705KJ1
External clock
Direct connection of clock
source
MC68HC705KJ1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC705K1CDW | 制造商:Motorola Inc 功能描述: |
| MC68HC705KJ1CDW | 功能描述:8位微控制器 -MCU 8 Bit 4MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MC68HC705KJ1CP | 功能描述:IC MCU 4MHZ 1.2K OTP 16-DIP 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(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)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(pán) 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 |
| MC68HC705L32FU | 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705L5FUE | 功能描述:8位微控制器 -MCU 705L5-EPP-80QFP-6019 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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