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| 型号： | AT89C4051-24SU |
| 厂商： | Atmel |
| 文件页数： | 14/19页 |
| 文件大小： | 0K |
| 描述： | IC MCU 4K FLASH 24MHZ 20-SOIC |
| 产品培训模块： | MCU Product Line Introduction |
| 标准包装： | 37 |
| 系列： | 89C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 24MHz |
| 连通性： | UART/USART |
| 外围设备： | 欠压检测/复位，LED，POR |
| 输入/输出数： | 15 |
| 程序存储器容量： | 4KB（4K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4 V ~ 6 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 616 (CN2011-ZH PDF) |
4
1001F–MICRO–6/08
AT89C4051
4.7
XTAL2
Output from the inverting oscillator amplifier.
5.
Oscillator Characteristics
XTAL1 and XTAL2 are the input and output, respectively, of an inverting amplifier which can be
configured for use as an on-chip oscillator, as shown in Figure 5-1. Either a quartz crystal or
ceramic resonator may be used. To drive the device from an external clock source, XTAL2
should be left unconnected while XTAL1 is driven as shown in Figure 5-2. There are no require-
ments on the duty cycle of the external clock signal, since the input to the internal clocking
circuitry is through a divide-by-two flip-flop, but minimum and maximum voltage high and low
time specifications must be observed.
Figure 5-1.
Oscillator Connections
Note:
C1, C2 = 30 pF
± 10 pF for Crystals
= 40 pF
± 10 pF for Ceramic Resonators
Figure 5-2.
External Clock Drive Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT89C4051-24SU SL383 | 制造商:Atmel Corporation 功能描述:8051 4K FLASH 2.7 TO 5.5V, PDI |
| AT89C51 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 4K Bytes Flash |
| AT89C51_00 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 4K Bytes Flash |
| AT89C51-12 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K Bytes Flash |
| AT89C51-12AA | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Bit Microcontroller with 4K Bytes Flash |
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