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參數(shù)資料
| 型號(hào)： | MC68HC705P6ADW |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁(yè)數(shù)： | 7/98頁(yè) |
| 文件大小： | 532K |
| 代理商： | MC68HC705P6ADW |
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Functional Pin Description
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
Freescale Semiconductor
15
1.3 Functional Pin Description
The following paragraphs describe the functionality of each pin on the MC68HC705P6A package. Pins
connected to subsystems described in other chapters provide a reference to the chapter instead of a
detailed functional description.
1.3.1 V
DD and VSS
Power is supplied to the MCU through VDD and VSS. VDD is connected to a regulated +5 volt supply and
VSS is connected to ground.
Very fast signal transitions occur on the MCU pins. The short rise and fall times place very high
short-duration current demands on the power supply. To prevent noise problems, take special care to
provide good power supply bypassing at the MCU. Use bypass capacitors with good high-frequency
characteristics and position them as close to the MCU as possible. Bypassing requirements vary,
depending on how heavily the MCU pins are loaded.
1.3.2 OSC1 and OSC2
The OSC1 and OSC2 pins are the control connections for the on-chip oscillator. The OSC1 and OSC2
pins can accept the following:
1.
A crystal as shown in Figure 1-2(a)
2.
A ceramic resonator as shown in Figure 1-2(a)
3.
An external clock signal as shown in Figure 1-2(b)
The frequency, fosc, of the oscillator or external clock source is divided by two to produce the internal bus
clock operating frequency, fop. The oscillator cannot be turned off by software unless the MOR bit, SWAIT,
is clear when a STOP instruction is executed.
Figure 1-2. Oscillator Connections
To VDD (or STOP)
(a)
Crystal or Ceramic
Resonator Connections
(b)
External Clock Source
Connections
OSC1
OSC2
MCU
37 pF
4.7 M
MCU
OSC1
OSC2
UNCONNECTED
EXTERNAL CLOCK
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705P6AMDW | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC705P6AMDWER2 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC705P6ASD | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER |
| MC68HC705P6AMDWR2 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC705P6ASD | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC705P6AMDW | 功能描述:IC MCU 4.6K OTP 2.1MHZ 28-SOIC RoHS:否 類(lèi)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(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類(lèi)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(pán) 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HC705P6AMP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HC705P6CDW | 制造商:Motorola Inc 功能描述: |
| MC68HC705P6CP | 制造商:Freescale Semiconductor 功能描述: 制造商:Motorola Inc 功能描述: |
| MC68HC705P6ECDW | 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
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