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LS4051

HuNan Hochip Times Microelectronics
Part Number LS4051
Manufacturer HuNan Hochip Times Microelectronics
Description 8-Bit MCU
Published Apr 1, 2010
Detailed Description www.DataSheet4U.com LS2051 (also refer to LS4051) is high performance eight bit microcomputer designed and manufactured...
Datasheet PDF File LS4051 PDF File

LS4051
LS4051

Overview
www.
DataSheet4U.
com LS2051 (also refer to LS4051) is high performance eight bit microcomputer designed and manufactured by our company and is compatible with MCS-51 instruction set, and its internal function, pin function, pin configuration, and electrical characteristics of pins are compatible with AT89C2051.
LS2051 supports simultaneous operation of two independent or associated programs.
The performance when only one program is executed is 1.
27 times of that of AT89C2051, and the processing capacity is 2.
55 times of AT89C2051 when two programs are executed simultaneously.
Features z Compatible with MCS-51 instruction set，pins are compatible with AT89C2051.
z 2/4KB internal flash program memory, Endurance: 2000 times erase/write cycles.
z 3.
0V to 5.
5V operating range.
z 0Hz to 24 MHz frequencies.
z Two-level of Encryption of Program Memory.
z 128×8B internal SRAM.
z 15 programmable I/O ports，20mA sink current，drives LED directly.
z Six interrupt sources.
z Two 16-bit timer and counter.
z One programmable UART.
z SPI programming interface.
z One high-resolution on-chip Analog Comparator.
z Low power idle and power-down modes.
Description LS2051 contains 2K bytes of program memory (LS4051 contains 4K bytes), 128 byte of data memory (SRAM), two 16-bit timer/counter, one five-vector secondary interrupt architecture , a single-kernel for execute two programs, fifteen IO ports, a full duplex serial port, a high-accuracy on-chip analogy comparator, oscillator and clock circuitry.
The operating range of LS2051 is 0Hz to 24MHz, and supports the idle power saving mode and the power-down power saving mode which are software selectable.
The idle mode stops the CPU, while allowing the SRAM, timer/counter, serial port and interrupt machine and the power-down system to continue functioning.
The power-down mode saves the SRAM contents but freezes oscillator and turns all the internal clocks off.
LS2051 achieves the function of double kernels, that is, it can execute one progra...


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