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Products Signal Conditioning High-precision SoCs CSU8RP1381
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CSU8RP1381
CSU8RP1381 is primarily used in electronic scales, precision measurement, control systems, and intelligent wearable measurement.

The CSU8RP1381D chip is a high-performance single-chip MCU with an 8-bit RISC architecture,  with an integrated 24-bit high-precision ADC and an LCD module. The peripheral devices of the common measurement system only require 7 ordinary capacitors. This chip can save any system calibration data to OTP at an operating voltage of 2.5 V–3.6 V. A UART communication port is available.


High-performance RISC CPU
8-bit single-chip MCU
Built-in 8K x 16-bit one-time programmable memory (OTP ROM)
384-byte data memory (SRAM)
Only 43 single-word instructions
8-level memory stack
Fastest instruction cycle: 2 MHz
Analog features
2 x 24-bit Sigma-Delta ADCs
Built-in PGA of 1/2/4/8/64/128/256/512x
ADC output rate: 30 Hz–3.9 kHz
Internal charge pump
Internal voltage regulator for sensors and modulators
Built-in temperature sensor
Features of the dedicated microcontroller
Power-on reset (POR)
Power-on reset and hardware reset delay timer (39 ms)
Internal low voltage reset (LVR)
Timer 0 —8-bit programmable pre-scaled 8-bit timer
Timer/Counter 1 —8-bit programmable pre-scaled 8-bit timer
Timer 4 —8-bit programmable pre-scaled 16-bit timer
Timer 5 —8-bit programmable pre-scaled 16-bit timer
Extended watchdog timer (32K WDT)
—Programmable time range
Peripheral features
16-bit bi-directional I/O port
4 buzzer outputs
3 PWM outputs
7 internal interrupts and 2 external interrupts
5 input ports with wake-up function
4 × 32/6 × 30 LCD driver
1 UART
Built-in low voltage burn-in control circuit, self-burn-in at 2.5 V minimum
Technical Documentation
Design and development
Tools/Software
CSWrite V3.2.4
CSWriterUx V3.2.4 is the latest burning tool software of Core Sea Technology. Support core sea 8bit MCU, 32bit MCU.
CSU-IDE
Core sea 8-bit MCU/SOC integrated development environment 1. Integrated C compiler, assembler, linker, window 2. Support standard C language and assembly language development 3 Example code of integrated chips
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