参数资料
型号: AT89LP4052-16SI
厂商: Atmel
文件页数: 78/94页
文件大小: 0K
描述: IC 8051 MCU FLASH 4K 20SOIC
标准包装: 38
系列: 89LP
核心处理器: 8051
芯体尺寸: 8-位
速度: 16MHz
连通性: SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
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: 256 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: 20-SOIC(0.295",7.50mm 宽)
包装: 管件
其它名称: AT89LP4052-20SI
AT89LP4052-20SI-ND
8
3547J–MICRO–10/09
AT89LP2052/LP4052
7.7
I/O Ports
The I/O ports of the AT89LP2052/LP4052 may be configured in four different modes. On the
AT89LP2052/LP4052, all the I/O ports revert to input-only (tri-stated) mode at power-up or reset.
In the standard 8051, all ports are weakly pulled high during power-up or reset. To enable 8051-
like ports, the ports must be put into quasi-bidirectional mode by clearing the P1M0 and P3M0
SFRs.
7.8
Reset
The RST pin in the AT89LP2052/LP4052 has different pulse width requirements than the stan-
dard 8051. The RST pin is sampled every clock cycle and must be held high for a minimum of
two clock cycles, instead of 24 clock cycles, to be recognized as a valid reset pulse
8.
Enhanced CPU
The AT89LP2052/LP4052 uses an enhanced 8051 CPU that runs at 6 to 12 times the speed of
standard 8051 devices (or 3 to 6 times the speed of X2-mode 8051 devices). The increase in
performance is due to two factors. First, the CPU fetches one instruction byte from the code
memory every clock cycle. Second, the CPU uses a simple two-stage pipeline to fetch and exe-
cute instructions in parallel. This basic pipelining concept allows the CPU to obtain up to 1 MIPS
per MHz. A simple example is shown in Figure 8-1.
The MCS-51 instruction set allows for instructions of variable length from 1 to 3 bytes. In a sin-
gle-clock-per-byte-fetch system this means each instruction takes at least as many clocks as it
has bytes to execute. A majority of the instructions in the AT89LP2052/LP4052 follow this rule:
the instruction execution time in clock cycles equals the number of bytes per instruction with a
few exceptions. Branches and Calls require an additional cycle to compute the target address
and some other complex instructions require multiple cycles. See Section 22. “Instruction Set
Summary” on page 52 for more detailed information on individual instructions. Figures 8-2 and
8-3 show examples of one- and two-byte instructions.
Figure 8-1.
Parallel Instruction Fetches and Executions
System Clock
nth Instruction
(n+1)th Instruction
Fetch
Execute
Fetch
Execute
Fetch
Tn
Tn+1
Tn+2
(n+2)th Instruction
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AT89LP4052-16SU 功能描述:IC 8051 MCU FLASH 4K 20SOIC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:89LP 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,LIN,SPI,UART/USART,USI 外围设备:欠压检测/复位,POR,PWM,温度传感器,WDT 输入/输出数:16 程序存储器容量:8KB(4K x 16) 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:带卷 (TR)
AT89LP4052-16XI 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
AT89LP4052-16XU 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
AT89LP4052-20PU 功能描述:8位微控制器 -MCU SINGLE CYCLE 4K FLASH-20MHZ 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
AT89LP4052-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 4K FLASH-20MHZ 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