Description

The CY8C3445AXI-108 is a microcontroller from the PSoC®3 family by Cypress. It is a true system level solution that combines MCU, memory, analog, and digital peripheral functions in a single chip. The CY8C3445AXI-108 offers high accuracy, high bandwidth, and high flexibility for signal acquisition, signal processing, and control. It has analog capability ranging from thermocouples to ultrasonic signals and can handle multiple data acquisition channels and analog inputs. This microcontroller also features interfaces like USB, multi-master I2C, and CAN, as well as a single cycle 8051 microprocessor core. Designers can easily create system level designs using the rich library of prebuilt components and boolean primitives provided by PSoC® Creator™.

Specifications and features

• Single cycle 8051 CPU core
• DC to 67 MHz operation
• Multiply and divide instructions
• Flash program memory, up to 64 KB, 100,000 write cycles, 20 years retention, multiple security features
• Up to 8 KB Flash ECC or configuration storage
• Up to 8 KB SRAM memory
• Up to 2 KB EEPROM memory, 1M cycles, 20 years retention
• 24 channel DMA with multilayer AHB bus access
• Low voltage, ultra low power
• Wide operating voltage range: 0.5V to 5.5V
• High efficiency boost regulator from 0.5V input to 1.8V-5.0V output
• 330 µA at 1 MHz, 1.2 mA at 6 MHz, 5.6 mA at 40 MHz
• Low power modes including:
• 200 nA hibernate mode with RAM retention and LVD
• 1 µA sleep mode with real time clock and low voltage reset
• Versatile I/O system
• 28 to 72 I/O (62 GPIO, 8 SIO, 2 USBIO)
• Any GPIO to any digital or analog peripheral routability
• LCD direct drive from any GPIO, up to 46x16 segments
• 1.2V to 5.5V I/O interface voltages, up to 4 domains
• Maskable, independent IRQ on any pin or port
• Schmitt trigger TTL inputs
• All GPIO configurable as open drain high/low, pull up/down, High-Z, or strong output
• Configurable GPIO pin state at power on reset (POR)
• 25 mA sink on SIO
• Digital peripherals
• 20 to 24 programmable PLD based Universal Digital Blocks
• Full CAN 2.0b 16 RX, 8 TX buffers
• Full-speed (FS) USB 2.0 12 Mbps using internal oscillator
• Up to four 16-bit configurable timer, counter, and PWM blocks
• Library of standard peripherals
• 8, 16, 24, and 32-bit timers, counters, and PWMs
• SPI, UART, I2C
• Many others available in catalog
• Library of advanced peripherals
• Cyclic Redundancy Check (CRC)
• Pseudo Random Sequence (PRS) generator
• LIN Bus 2.0
• Quadrature decoder
• Analog peripherals (1.71V ≤ Vdda ≤ 5.5V)
• 1.024V±0.9% internal voltage reference across -40°C to +85°C (14 ppm/°C)
• Configurable Delta-Sigma ADC with 12-bit resolution
• Programmable gain stage: x0.25 to x16
• 12-bit mode, 192 ksps, 70 dB SNR, 1 bit INL/DNL
• 67 MHz, 24-bit fixed point digital filter block (DFB) to implement FIR and IIR filters
• Up to four 8-bit, 8 Msps IDACs or 1 Msps VDACs
• Four comparators with 75 ns response time
• Up to four uncommitted opamps with 25 mA drive capability
• Up to four configurable multifunction analog blocks. Example configurations are PGA, TIA, Mixer, and Sample and Hold
• Programming, debug, and trace
• JTAG (4 wire), Serial Wire Debug (SWD) (2 wire), and Single Wire Viewer (SWV) interfaces
• 8 address and 1 data breakpoint
• 4 KB instruction trace buffer
• Bootloader programming supportable through I2C, SPI, UART, USB, and other interfaces
• Precision, programmable clocking
• 1 to 66 MHz internal ±1% oscillator (over full temperature and voltage range) with PLL
• 4 to 33 MHz crystal oscillator for crystal PPM accuracy
• Internal PLL clock generation up to 67 MHz
• 32.768 kHz watch crystal oscillator
• Low power internal oscillator at 1 kHz, 100 kHz
• Temperature and packaging
• -40°C to +85°C degrees industrial temperature
• 48-pin SSOP, 48-pin QFN, 68-pin QFN, and 100-pin TQFP package options

Application Scenarios

The CY8C3445AXI-108 microcontroller can be used in various applications that require a high level of integration, accuracy, and flexibility. Some of the application scenarios include:

• Industrial automation
• Building automation
• Smart home systems
• IoT devices
• Embedded systems
• Medical devices

Comparison

• High level of integration reduces the overall component count and simplifies system design
• Flexible analog and digital peripherals provide versatility in system implementation
• Low power modes and wide operating voltage range enable power-efficient designs
• Rich library of prebuilt components and boolean primitives in PSoC® Creator™ speeds up system development
• Support for various programming, debug, and trace interfaces enhances usability

• Availability of package options may be limited
• Complexity of configuration and programming may require a learning curve for new users