欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號: MC68C912B32CFU8
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 16-Bit Microcontroller
中文描述: 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 11/128頁
文件大小: 748K
代理商: MC68C912B32CFU8
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
11
3.3 Signal Descriptions
3.3.1 Crystal Driver and External Clock Input (XTAL, EXTAL)
These pins provide the interface for either a crystal or a CMOS compatible clock to control the internal
clock generator circuitry. Out of reset the frequency applied to EXTAL is twice the desired E-clock rate.
All the device clocks are derived from the EXTAL input frequency.
Figure 4 Common Crystal Connections
Figure 5 External Oscillator Connections
XTAL is the crystal output. The XTAL pin must be left unterminated when an external CMOS compatible
clock input is connected to the EXTAL pin. The XTAL output is normally intended to drive only a crystal.
The XTAL output can be buffered with a high-impedance buffer to drive the EXTAL input of another de-
vice.
In all cases take extra care in the circuit board layout around the oscillator pins. Load capacitances
shown in the oscillator circuits include all stray layout capacitances. Refer to
Figure 4
and
Figure 5
for
diagrams of oscillator circuits.
3.3.2 E-Clock Output (ECLK)
ECLK is the output connection for the internal bus clock and is used to demultiplex the address and data
and is used as a timing reference. ECLK frequency is equal to 1/2 the crystal frequency out of reset. E-
clock output can be turned off in single-chip modes to reduce the effects of RFI. In special peripheral
mode the E clock is an input to the MCU. All clocks, including the E-clock, are halted when the MCU is
in STOP mode. It is possible to configure the MCU to interface to slow external memory. ECLK can be
stretched for such accesses.
10 M
MCU
C
C
EXTAL
XTAL
2 x E
CRYSTAL
COMMON XTAL CONN
NC
MCU
EXTAL
XTAL
2 x E
CMOS-COMPATIBLE
EXTERNAL OSCILLATOR
EXT EXTAL CONN
相關(guān)PDF資料
PDF描述
MC68CK338 Highly Integrated, Low-Power, 32-Bit Microcontroller
MC68EC060 32-Bit Microprocessors.(32位微處理器)
MC68EN360RC25V QUad Integrated Communications Controller Users Manual
MC68EN360CFE25 QUad Integrated Communications Controller Users Manual
MC68EN360FE25 AC 4C 4#12 PIN PLUG 023
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68C912B32FU8 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-Bit Microcontroller
MC68CK16Z1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
MC68CK16Z1CAG16 功能描述:16位微控制器 - MCU 16BIT 1KRAM 32KHZ CRYSTAL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
MC68CK16Z1CAG16 制造商:Freescale Semiconductor 功能描述:Microcontroller
MC68CK16Z1CFC16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series
主站蜘蛛池模板: 罗山县| 平潭县| 安溪县| 雷州市| 弥勒县| 凤城市| 万全县| 隆尧县| 上栗县| 宁陵县| 长沙市| 林州市| 开远市| 桂阳县| 辽宁省| 安阳市| 平原县| 赤峰市| 平阴县| 玛纳斯县| 陇西县| 从化市| 大悟县| 抚远县| 盐亭县| 新竹市| 农安县| 惠水县| 万盛区| 达孜县| 登封市| 清流县| 乌苏市| 金坛市| 南木林县| 泰州市| 灵丘县| 色达县| 肥乡县| 清镇市| 澳门|