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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CSU38F21
CSU38F21 is an 8-bit wide voltage flash MCU with an LED driver and 12-bit ADC, built-in 16 KB flash program memory, integrated 8 COM×7 SEG LED driver, UART interface, and I2C interface, with independent AVDD to enhance ADC performance. It is suitable for personal care products, e-cigarettes, battery management, etc.
Analog Features
-12-bit fully differential ADC: 8 external input channels, supports differential/pseudo-differential/single-ended inputs; internal 1.22 V, VDD two voltage reference options.
-Internal voltage reference: 1.22 V internal voltage reference, accuracy ±1% (5 V); supports voltage reference output, load 10K/100pF.
-Internal voltage reference: 1.22 V internal voltage reference, accuracy ±1% (5 V); supports voltage reference output, load 10K/100pF.
LED drivers
-8COM×7SEG LED driver with adjustable duty cycle
-SEG drive capacity 8/10/12/14 mA, accuracy ±5%
-COM fill current 70 mA/40 mA
-SEG drive capacity 8/10/12/14 mA, accuracy ±5%
-COM fill current 70 mA/40 mA
High-performance RISC CPU
-Built in 8K × 16-bit flash program memory
-488-byte data memory (SRAM)
-Supports online simulation (ICD)
-488-byte data memory (SRAM)
-Supports online simulation (ICD)
Operating Voltage
-2.3 V~5.5 V@fcpu=4 MHz (instruction cycle)
-1.8V~2.4 V@fcpu=2 MHz (instruction cycle)
-1.8V~2.4 V@fcpu=2 MHz (instruction cycle)
Oscillator
-Built in 32 MHz oscillator, accuracy ±1%@5 V, 25 ℃
Features of dedicated microcontrollers
-Power-On Reset (POR)
-Low voltage reset (LVR) function, reset voltage: 1.7 V, 2.0 V, 2.5 V
-Low voltage detection (LVD) function, detection voltages: 1.9 V, 2.2 V, 3.2 V, 3.7 V; comparator function, external input and internal 0.6 V comparison
-Power-on reset and hardware reset delay timer (30 ms)
-Timer 0:8-bit programmable prescaler timer/counter
-Timer/Counter 2: 12-bit programmable prescaler timer/counter
-Timer/Counter 3: 12-bit programmable prescaler timer/counter
-Timing/Counter 4: 12-bit programmable prescaler timer/counter
-Extended watchdog timer (32K WDT), programmable time range
-Window watchdog (CPU clock), 7-bit down counter, cannot be turned off by software when enabled。
-Low voltage reset (LVR) function, reset voltage: 1.7 V, 2.0 V, 2.5 V
-Low voltage detection (LVD) function, detection voltages: 1.9 V, 2.2 V, 3.2 V, 3.7 V; comparator function, external input and internal 0.6 V comparison
-Power-on reset and hardware reset delay timer (30 ms)
-Timer 0:8-bit programmable prescaler timer/counter
-Timer/Counter 2: 12-bit programmable prescaler timer/counter
-Timer/Counter 3: 12-bit programmable prescaler timer/counter
-Timing/Counter 4: 12-bit programmable prescaler timer/counter
-Extended watchdog timer (32K WDT), programmable time range
-Window watchdog (CPU clock), 7-bit down counter, cannot be turned off by software when enabled。
Peripheral Features
-19 bi-directional I/O ports
-3 PWM outputs, 1 complementary PWM output
-8 internal interrupts, 2 external interrupts—INT0, INT1
-14 inputs with wake-up function
-PT1.3 supports open-drain output port
-PT1.5 and PT1.4 output currents are configurable up to IOL=60 mA@5 V and IOH=25 mA@5 V
-Configurable input logic level threshold
-1 UART, baud rate up to 115200 supported
-1 I2C slave, supports standard mode (100 kbps) and fast mode (400 kbps)
-3 PWM outputs, 1 complementary PWM output
-8 internal interrupts, 2 external interrupts—INT0, INT1
-14 inputs with wake-up function
-PT1.3 supports open-drain output port
-PT1.5 and PT1.4 output currents are configurable up to IOL=60 mA@5 V and IOH=25 mA@5 V
-Configurable input logic level threshold
-1 UART, baud rate up to 115200 supported
-1 I2C slave, supports standard mode (100 kbps) and fast mode (400 kbps)
Low power consumption characteristics
-Normal mode 3.5 mA@4 MHz, 5 V
-Sleep mode 3 μA
-Sleep mode 3 μA
Package
—QFN24 / SSOP24 / SOP16 / MSOP10
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Technical Documentation
Product manual(1)
Application Document(1)
Technical Documentation(2)
Reference design(2)
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