CA1020N5

CA1020N5

The CA1020 series is a high-performance dedicated chip for color screens. It adopts a high-performance 32-bit core with a working main frequency of 64 MHz (it can support up to 72 MHz). It has 18K bytes of SRAM, is compatible with externally connected 1M-256M Bit SPI-NOR Flash, supports 1/2/4-wire QSPI communication modes, and supports the upgrade of external flash programs. It supports the scanning of 320 X 240 pixel color screens, with a maximum rate of up to 25 frames per second. It has a built-in 4-channel air sensor, supporting the detection of external MIC air switches; a built-in 4-channel dedicated pin for dry-burning prevention and resistance measurement of e-cigarettes; 2 analog comparators for over-current and over-voltage protection functions; it also has a built-in 28-channel 12-bit ADC, 12 touch keys, 4 groups of complementary PWM, I2C, 3 groups of UART, 3 groups of 4-wire SPI, low-voltage detection (LVD), and a built-in LDO voltage output that can be configured to output 3.3V - 2.6V, which can save external LDOs.

It operates in a temperature range of -40 to +105 °C and a wide voltage range of 1.8V to 5.5V, and supports three power-saving modes: Sleep, Stop, and low-speed operation to meet the application requirements of different power consumption levels. With its powerful functions and excellent anti-interference performance, it can be widely used in color-screen e-cigarettes, color-screen smart home control panels, color-screen home appliance control panels, AI color-screen toys, color-screen thermostats, and other color-screen products.

Product Details

· Core

· CPU: 32-bit core

· Main frequency: 64 MHz (it can support up to 72 MHz)

· Memory

· Supports external 1-wire, 2-wire, 4-wire 1M - 256MB Bit SPI-Nor Flash

· SRAM: 18KB

· Operating Voltage

· Operating voltage: 1.8 - 5.5V

· Operating Temperature

· Operating temperature: -40 °C - +105 °C

· Clock System

· External low-speed oscillator: 32.768KHz

· Built-in low-speed RC oscillator: 96KHz

· Built-in high-speed RC oscillator: 16MHz, with an accuracy of ±1%@5V/25 °C (factory-calibrated)

· Built-in PLL (Phase Locked Loop)

· Built-in RTC (Real-Time Clock)

· Supports alarm events, periodic wake-up, and can implement year, month, day, and clock functions

· Supports millisecond interrupt, second interrupt, and alarm interrupt

· Timers (TIMER)

· One 16-bit 8-channel timer for 8-channel PWM output, with a dead-time generator

· Supports 4 groups of complementary PWM applications

· One 16-bit general-purpose timer, with each timer having up to 2 input capture or output compare channels

· Two 16-bit basic timers and a SysTick timer

· Independent and window watchdog timers

· Interrupt System

· Supports nested interrupt vectors and can be configured with 4 levels of priority through software

· Supports GPIO, IWDG, ADC, UART0, UART1, UART2 timers, WWDG, I2C, SPI, PWM, SYSTICK, and LVD as interrupt sources

· All GPIOs support the external interrupt wake-up function. It supports rising edge, falling edge, and both-edge interrupts

· DMA (Direct Memory Access)

· Two two-channel DMAs

· Supports hardware-triggered DMA requests from TIMER, UART, SPI, ADC, etc.

· Channel priority supports software configuration

· Independent data source address and destination data address; the data transfer width can be in bytes, half-words, or words

· Supports circular buffer management

· DMA supports: memory-to-memory, peripheral-to-memory, and memory-to-peripheral

· Input/Output Pins (GPIO)

· Supports up to 45 GPIO ports, and supports push-pull, open-drain, pull-up, pull-down, and high-impedance modes

· Built-in pull-up resistor of 10K and pull-down resistor of 15K. Weak pull-up resistor of 45K and weak pull-down resistor of 45K

· Source current support: 3mA, 5mA, 9mA, 12mA, which can be set in four levels

· Sink current support: 3mA, 8mA, 12mA, 18mA, which can be set in four levels

· Four channels of high-source current pins can be used for the resistance measurement of heating wires (shared with comparator pins)

· Supports 13 3.3V power supply pins for communication and control with external flash and color screens

· Built-in one 3.3V LDO power output pin, which can be set to turn off, and can output 3.3V/3.0V/2.8V/2.6V to supply power to external devices, saving external LDO devices

· Analog-to-Digital Converter (ADC)

· One 28-channel 12-bit ADC

· Supports 3 types of reference voltage sources: VDD, internal reference, and external reference

· Supports single-shot mode and continuous mode sampling

· When the internal voltage is selected as the reference voltage, the VDD voltage can be measured

· Built-in comparison function, supports the hardware-triggered start conversion function

· Air Sensor

· Supports the detection function of the microphone air switch

· Supports silicon microphones, positive installation (electret MIC) and reverse installation (back electret MIC)

· Supports the difference correction function of the microphone metal film

· Supports the PFM mode to enhance the customer experience

· Supports the function of waking up the MCU by interrupt

· Touch Keys (Touch Key)

· Built-in touch sensing controller

· Supports 12 touch channels, and supports functions such as button touch, slider touch, and circular touch

· Supports touch wake-up and power-saving mode

· Analog Comparator (COMP)

· Supports 2 groups of independent analog comparators

· Supports 64 levels of programmable input with a threshold voltage of 1V-VDD

· Supports short-circuit protection function

· Supports interrupt and delay functions

· The analog comparator is internally connected to the ADC and can be applied to the resistance measurement function of heating wires

· SPI Interface

· Built-in 3 SPI interfaces, supporting master-slave mode, with a maximum support rate of 32M

· *SPI-1 supports 1, 2, and 4-wire communication, and is dedicated to communication with external flash. It is internally connected to the DMA, and the pins are powered by 3V.

· *SPI-2 supports 1 and 2-wire communication, and is used for communication with the TFT color screen. It is internally connected to the DMA, and the pins are powered by 3V.

· *SPI-3 supports 1 and 2-wire communication, and can be used for Bluetooth BLE radio frequency communication. It is internally connected to the DMA, and the pins are powered by VDD.

· LED Cascade

· Supports 1-channel cascaded LED drive, with a scanning frequency greater than 400Hz/S and a data sending speed of 800Kbps. It can directly control WS2812 or similar driver chips, meeting the requirements of monochromatic or colorful LED strip products.

· Universal Serial Interface (UART)

· Supports 3 UART interfaces

· Supports 1-byte receive buffer

· I2C Interface

· Built-in 1-channel I2C interface, supporting master-slave mode, and supporting standard/fast modes.

· Low-Voltage Detection (LVD)

· The configurable voltage detection range is 1.8 - 4.8V (0.1V per level)

· Can set low-voltage interrupt

· Low-Power Mode

· Supports STOP mode

· In the MCU STOP mode, the LDO is turned off, and in the external interrupt wake-up mode, the current is as low as 10uA

· In the MCU STOP mode, the LDO is turned on, the external Nor SPI FLASH enters the standby mode, and in the external interrupt wake-up and MIC wake-up mode, the current is as low as 16uA

· When the MCU enters the STOP mode, the LDO is turned on, the external Nor SPI FLASH enters the standby mode, and in the external interrupt wake-up, MIC wake-up, and touch key wake-up mode, the current is as low as 20uA

· Serial Two-Wire Simulation, Debugging and Download

· Supports two-wire download (PA0 - SWD, PA1 - SWC)

· Supports the simulation function

· Supports two-wire download to upgrade the external SPI-FLASH, which is convenient for product development and upgrading

· Package Form: QFN32