STC/STC8H8K64U-45I-LQFP48

1T 8051 microprocessor single-chip microcomputer chip

Product Description

         The STC8H series of single-chip microcontrollers do not require external vibration or external reset. They are the 8051 single-chip microcontrollers that aim for super strong anti-interference, ultra-low cost, high speed and low power consumption. Under the same operating frequency, the STC8H series of single-chip microcontrollers are approximately 12 times faster than the traditional 8051 (11.2 to 13.2 times faster) To execute all 111 instructions in sequence, the STC8H series microcontroller only requires 147 clocks, while the traditional 8051 needs 1,944 clocks. The STC8H series of microcontrollers is a single-clock/machine cycle (1T) microcontroller produced by STC. It is a new generation of 8051 microcontrollers featuring wide voltage, high speed, high reliability, low power consumption, strong anti-static and strong anti-interference capabilities, with super encryption. The instruction code is fully compatible with traditional 8051.

         MCU internal integration and high precision clock R/C + (plus or minus 0.3%, room temperature 25 ℃), 0.88% ~ + 1.05% temperature drift (~ 20 ℃ ~ + 65 ℃), 1.38% ~ + 1.42% temperature drift (- 40 ℃ ~ + 85 ℃), 3% ~ + 3% temperature drift (- 40 ℃ ~ + 125 ℃). When programming the ISP, the operating frequency can be set, which can completely eliminate the need for expensive external crystal oscillators and external reset circuits (the internal highly reliable reset circuit is integrated, and the 4-level reset threshold voltage can be selected during ISP programming).

        There are three selectable clock sources inside the MCU: an internal high-precision IRC clock (which can be appropriately increased or decreased), an internal 32KHz low-speed IRC, and an external 4M to 33M crystal oscillator or external clock signal. In the user code, the clock source can be freely selected. After the clock source is chosen, it can be further divided by an 8-bit frequency divider before the clock signal is provided to the CPU and various peripheral devices (such as timers, serial ports, SPI, etc.).

      The MCU offers two low-power modes :IDLE mode and STOP mode. In IDLE mode, the MCU stops providing a clock to the CPU. The CPU has no clock and stops executing instructions, but all peripheral devices are still in operation. At this time, the power consumption is approximately 1.3mA(operating frequency of 6MHz). The STOP mode is the master clock stop-vibration mode, which is the traditional power-off mode/power outage mode/shutdown mode. At this time, the CPU and all peripheral devices stop working, and the power consumption can be reduced to 0.6uA@Vcc=5.0V and 0.4uA@Vcc=3.3V.

       The MCU offers a rich array of digital peripheral interfaces (serial port, timer, advanced PWM, as well as I²C, SPI, USB) and analog peripherals (ultra-high-speed ADC, comparator), which can meet the design requirements of a wide range of users.

       The STC8H series of single-chip microcontrollers integrate enhanced dual data Pointers internally. Through program control, the functions of automatic increment or decrement of data Pointers and automatic switching between two groups of data Pointers can be achieved.

LQFP48 package size diagram (9mm*9mm)

Products photography