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CSU34F20
CSU34F20 is an 8-bit CMOS single-chip flash MCU with an LED driver and 12-bit ADC, and built-in 4K x 16-bit FLASH program memory.
High-performance RISC CPU
8-bit MCU
Built in 4K × 16-bit program memory FLASH
488-byte data memory (SRAM)
43 single word instructions
8-level PC storage stack
8-level PUSH and POP stack
Supports online simulation (ICD)
Oscillator
Internal 32 MHz oscillator, accuracy ± 1% @ 5 V, 25 ℃
Peripheral Features
19-bit bi-directional I/O port
3 PWM outputs, 1 complementary PWM output
10 interrupt sources
-8 internal interrupts
-2 external interrupts-INT0, INT1
14 inputs with wake-up function
LED drivers
-8 COM×7 SEG LED driver, duty cycle adjustable
-SED drive capability 8/10/12/14 mA, accuracy ±5%
-COM fill current 70 mA/40 mA
12-bit ADC
-8 external input channels, supporting 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
Low voltage reset (LVR) function,
-Reset voltage: 1.7 V, 2.0 V, 2.5 V
Low voltage detection (LVD) function
-Detection voltage: 1.9 V, 2.2 V, 3.2 V, 3.7 V
-Comparator function, external input and internal 0.6 V comparison
POR power-on reset voltage 1.8 V
PT1.3 supports open-drain output port
PT1.5 and PT1.4 output currents are configurable up to
IOL=60 mA@5 V, IOH=25 mA@5 V
Configurable input logic level voltage
1 UART with baud rate support up to 115200
1 I2C slave, supports standard mode (100 kbps) and fast mode (400 kbps)
Features of Dedicated Microcontrollers
Power-on reset (POR)
Power-on reset and hardware reset delay timer (30 ms)
Built-in low voltage reset (LVR)
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
Timer/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
CMOS Technology
Voltage Operating Range
-2.3 V~5.5 V@fcpu=4 MHz (instruction cycle)
-1.8V~2.4 V@fcpu=2 MHz (instruction cycle)
Operating Temperature Range
--40~85 ºC
Low Power Characteristics
MCU operating current
-Normal mode 3.5 mA@4 MHz, 5 V
Sleep mode 3 uA
Package
QFN20/SSOP24/SOP16
Applications
Personal care appliances, electronic cigarettes
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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, debugger 2. Support standard C language and assembly language development 3 Example code of integrated chips
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*Company name
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*Final product application
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