参数资料
型号: AT89LP213-20PU
厂商: Atmel
文件页数: 4/98页
文件大小: 0K
描述: MCU 8051 2K FLASH 20MHZ 14-PDIP
产品培训模块: MCU Product Line Introduction
标准包装: 25
系列: 89LP
核心处理器: 8051
芯体尺寸: 8-位
速度: 20MHz
连通性: SPI
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 12
程序存储器容量: 2KB(2K x 8)
程序存储器类型: 闪存
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 14-DIP(0.300",7.62mm)
包装: 管件
12
3538E–MICRO–11/10
AT89LP213/214
9.
System Clock
The system clock is generated directly from one of three selectable clock sources. The three
sources are the on-chip crystal oscillator, external clock source, and internal RC oscillator. The
clock source is selected by the Clock Source User Fuses as shown in Table 9-1. No internal
clock division is used to generate the CPU clock from the system clock. See “User Configuration
9.1
Crystal Oscillator
When enabled, the internal inverting oscillator amplifier is connected between XTAL1 and
XTAL2 for connection to an external quartz crystal or ceramic resonator as shown in Figure 9-1.
Note that the internal structure of the device adds about 10 pF of capacitance to both XTAL1
and XTAL2, so that in some cases an external capacitor may NOT be required. It is recom-
mended that a resistor R1 be connected to XTAL1, instead of load capacitor C1, for improved
startup performance. The total capacitance on XTAL1 or XTAL2, including the external load
capacitor plus internal device load, board trace and crystal loadings, should not exceed 20 pF.
When using the crystal oscillator, P3.2 and P3.3 will have their inputs and outputs disabled.
When using the crystal oscillator, XTAL2 should not be used to drive a board-level clock without
a buffer.
Figure 9-1.
Crystal Oscillator Connections
Note:
1. C2
=
0–10 pF for Crystals
=
0–10 pF for Ceramic Resonators
R1
=
4–5 M
Ω
Table 9-1.
Clock Source Settings
Clock Source
Fuse 1
Clock Source
Fuse 0
Selected Clock Source
0
Crystal Oscillator
01
Reserved
1
0
External Clock on XTAL1
1
Internal 8 MHz RC Oscillator
~10 pF
C2
R1
相关PDF资料
PDF描述
VE-B5X-IX-F4 CONVERTER MOD DC/DC 5.2V 75W
V375A36E500BG CONVERTER MOD DC/DC 36V 500W
AT89LP214-20XU MCU 8051 2K FLASH 20MHZ 14-TSSOP
VE-B5X-IW-F2 CONVERTER MOD DC/DC 5.2V 100W
V375A36E500BF3 CONVERTER MOD DC/DC 36V 500W
相关代理商/技术参数
参数描述
AT89LP213-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP213-20XU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP214-16XI 功能描述:8位微控制器 -MCU Microcontroller RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP214-20PU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89LP214-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT