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.
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CS1259
Main application scenarios: bridge sensor, four-corner balance weighing, pressure detection, human body impedance analysis, AC lipid measurement, heart rate measurement, etc.
CS1259 is a digital filter that includes an ADC signal chain, a body impedance measurement module (BIM), a Sigma delta ADC, and a digital filter. The ADC signal link includes input MUXP/MUXN and programmable low noise gain amplifier (PGA). The MUXP/MUXN has 8 input channels, including 5 external analog input channels and 3 internal input channels. After MUXP/MUXN, there is a level shift module—LVSHIFT, which can shift the input signal near the ground rail and send it to the PGA. It also has an adjustable current source IDAC1/0, which can adjust the common mode voltage of the input signal or compensate the offset voltage.
The PGA and ADC have multiple gain options, and the digital filter can be configured for multiple output rates. The human body impedance measurement module uses a sinusoidal excitation source to convert the human body impedance into a voltage signal that is transmitted to the ADC signal chain for measurement. It supports multi-electrode and multi-frequency human body impedance measurement.
Supports single-ended input
Supports multiple differential input pairs
Supports input level shift function
The PGA and ADC have multiple gain options, and the digital filter can be configured for multiple output rates. The human body impedance measurement module uses a sinusoidal excitation source to convert the human body impedance into a voltage signal that is transmitted to the ADC signal chain for measurement. It supports multi-electrode and multi-frequency human body impedance measurement.
Supports single-ended input
Supports multiple differential input pairs
Supports input level shift function
PGA
-1/2/4/8/16/32/64/128x selectable gain
-Up to 100 Mohm equivalent input impedance
-Up to 100 Mohm equivalent input impedance
BIM
-- Supports 4/6/8 electrode measurement
-- Supports 5 kHz/10 kHz/25 kHz/50 kHz/100 kHz/250 kHz multi-step frequency measurement
-- Supports absolute impedance and phase angle measurements
-- Supports 5 kHz/10 kHz/25 kHz/50 kHz/100 kHz/250 kHz multi-step frequency measurement
-- Supports absolute impedance and phase angle measurements
ADC
-24-bit resolution
-Output rate 10~1280 Hz 8 gears selectable
Valid bits: 2.35 V reference, 40 Hz rate, 19.5 bits valid bits at 128x gain
-Output rate 10~1280 Hz 8 gears selectable
Valid bits: 2.35 V reference, 40 Hz rate, 19.5 bits valid bits at 128x gain
LDO and internal reference voltage
-Self-contained LDO, output 2.35/2.45/2.8/3.0 V selectable, accuracy ±1%
-Self-contained low drift reference, internal reference voltage 2.048 V selectable, accuracy ±1%
Supports performance, normal, low power, and sleep mode
Supports voltage measurement, temperature measurement, BIM measurement and manual measurement modes with single command switching
Low drift on-chip clock
Three-wire serial communication
-Self-contained low drift reference, internal reference voltage 2.048 V selectable, accuracy ±1%
Supports performance, normal, low power, and sleep mode
Supports voltage measurement, temperature measurement, BIM measurement and manual measurement modes with single command switching
Low drift on-chip clock
Three-wire serial communication
Technical Documentation
Product manual(1)
Design and development
Tools/Software
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CSU-IDE
Core sea 8-bit MCU/SOC integrated development environment
1. Integrated C compiler, assembler, linker, debugger
2. Support standard C language and assembly language development 3 Example code of integrated chips