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Product description

Product model

Design & development

  • CMS8H5145

    CMS8H5145 is Cmsemicon's high-precision measurement SoC based on 8051 core, which is widely used in  high-precision measurement fields such as forehead thermometers、Ear thermometer、blood pressure monitors and so on。


    Datasheet >

    Main frequency is 48MHz, voltage is 2.5V to 4.4V, supply 64KB Flash Memory,1K Data Flash ,4K XRAM, Built-in 24-bit high precision Sigma-Delta ADC, supports 2 differential input with selectable gains of 1 、2 、4 、8 、16 、32 、64 、128 、256. Output rate selectable: 5Hz~2.56KHz; Effective resolution up to 20.6 bits, with internal short switch and system chopper switch, integrated temperature sensor, two differential input channels. Built-in multi-channel 12-bit SAR ADC, support hardware LCD driver, and up to 4COM x 33SEG、5COM x 32SEG 、6COM x 31SEG. Support hardware LED driver and up to 4COM x 26SEG、5COM x 25SEG 、6COM x 24SEG. Supports two low offset op amps and two low offset comparators; Supports 6-channel flexibly configurable PWM, support 3 UARTs, 1 SPI, I I2C, 5 timers, support MDU; industrial-grade standard design, Can work at -40°C to 85°C, provide LQFP48 package.


    Features

    > 8051 core

    > Working voltage: 2.5V-4.4V @48MHz

    > Working temperature: -40~ +85

    > 64KB Flash ROM

    > 256B general RAM

    > 4KB XRAM

    > 1KB DATA FLASH

    > 5 16-bit timers

    > 6 channels enhanced PWM

    > Built-in Buzzer driver

    > Built-in multi-channel 12-bit ADC, sample rate: 100Ksps

    > Built-in 24bit high precision Sigma-Delta ADC(speed: 5Hz~2.56KHz), support 2 differential input, the highest Effective accuracy of 20.6bit, integrated temperature sensor

    > Built-in LCD driver

    > Built-in LED driver

    > Built-in 2 low offset OPAs

    > Built-in 2 low offset comparators

    > 3 UART interfaces

    > 1 I2C interface

    > 1 SPI interface

    > 38 general-purpose GPIOs

    > Package type: LQFP48

  • Product model

    Part Number Package Frequency (MHz) Core Temp Voltage Memory Type ROM RAM Data Flash GPIO Timer LSE WDT/WWDT RTC UART I²C SPI PWM/EPWM SAR-ADC SAR-ADC-bit SAR-ADC-ch OPA COMP LCD LED Touch Other Interface
    SAR-ADC-unitSAR-ADC-bitSAR-ADC-ch
    CMS8H5145 LQFP48 48 8051 -40℃~+85℃ 2.5~4.4 FLASH 64KB 4.25KB 1KB 38 5 Y Y Y 3 1 1 6 1 12 16 2 2

    33SEG×4COM 32SEG×5COM 31SEG×6COM

    26SEG×4COM 25SEG×5COM 24SEG×6COM

    / 24-bit Sigma-Delta ADC

  • Design & development

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