Description

With its unique array of configurable blocks, PSoC®3 is a true system level solution providing MCU, memory, analog, and digital peripheral functions in a single chip.

Specifications and features

The CY8C38 family offers a modern method of signal acquisition, signal processing, and control with high accuracy, high bandwidth, and high flexibility. Analog capability spans the range from thermocouples (near DC voltages) to ultrasonic signals. The CY8C38 family can handle dozens of data acquisition channels and analog inputs on every GPIO pin. The CY8C38 family is also a high performance configurable digital system with some part numbers including interfaces such as USB, multi-master I2C, and CAN.

Features:

• Single cycle 8051 CPU
• DC to 67 MHz operation
• Multiply and divide instructions
• Flash program memory, up to 64 KB, 100,000 write cycles, 20 years retention, and multiple security features
• Up to 8-KB flash error correcting code (ECC) or configuration storage
• Up to 8 KB SRAM
• Up to 2 KB electrically erasable programmable read-only memory (EEPROM), 1 M cycles, and 20 years retention
• 24-channel direct memory access (DMA) with multilayer AHB[1] bus access
• Programmable chained descriptors and priorities
• High bandwidth 32-bit transfer support
• Low voltage, ultra low-power
• Wide operating voltage range: 0.5 V to 5.5 V
• High efficiency boost regulator from 0.5-V input through 1.8-V to 5.0-V output
• 0.8 mA at 3 MHz, 1.2 mA at 6 MHz, and 6.6 mA at 48 MHz
• Low-power modes including:
• 1-µA sleep mode with real time clock and low-voltage detect (LVD) interrupt
• 200-nA hibernate mode with RAM retention
• Versatile I/O system
• 28 to 72 I/O (62 GPIOs, eight special input/outputs (SIO), two USBIOs[2])
• Any GPIO to any digital or analog peripheral routability
• LCD direct drive from any GPIO, up to 46 × 16 segments[2]
• CapSense® support from any GPIO[3]
• 1.2-V to 5.5-V I/O interface voltages, up to four domains
• Maskable, independent IRQ on any pin or port
• Schmitt-trigger transistor-transistor logic (TTL) inputs
• All GPIO configurable as open drain high/low, pull-up/pull-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 logic device (PLD) based universal digital blocks (UDB)
• Full CAN 2.0b 16 Rx, 8 Tx buffers[2]
• Full-speed (FS) USB 2.0 12 Mbps using internal oscillator[2]
• Up to four 16-bit configurable timer, counter, and PWM blocks
• 67 MHz, 24-bit fixed point digital filter block (DFB) to implement FIR and IIR filters
• Library of standard peripherals
• 8-, 16-, 24-, and 32-bit timers, counters, and PWMs
• Serial peripheral interface (SPI), universal asynchronous transmitter receiver (UART), and I2C
• Many others available in catalog
• Library of advanced peripherals
• Cyclic redundancy check (CRC)
• Pseudo random sequence (PRS) generator
• Local interconnect network (LIN) bus 2.0
• Quadrature decoder
• Analog peripherals (1.71 V ≤ VDDA ≤ 5.5 V)
• 1.024 V ± 0.1% internal voltage reference across –40 °C to +85 °C (14 ppm/°C)
• Configurable delta-sigma ADC with 8- to 20-bit resolution
• Sample rates up to 192 ksps
• Programmable gain stage: ×0.25 to ×16
• 12-bit mode, 192 ksps, 66-dB signal to noise and distortion ratio (SINAD), ±1-bit INL/DNL
• 16-bit mode, 48 ksps, 84-dB SINAD, ±2-bit INL, ±1-bit DNL
• Up to four 8-bit, 8-Msps IDACs or 1-Msps VDACs
• Four comparators with 95-ns response time
• Up to four uncommitted opamps with 25-mA drive capability
• Up to four configurable multifunction analog blocks. Example configurations are programmable gain amplifier (PGA), transimpedance amplifier (TIA), mixer, and sample and hold
• CapSense support
• Programming, debug, and trace
• JTAG (4-wire), serial wire debug (SWD) (2-wire), and single wire viewer (SWV) interfaces
• Eight address and one data breakpoint
• 4-KB instruction trace buffer
• Bootloader programming supportable through I2C, SPI, UART, USB, and other interfaces
• Precision, programmable clocking
• 3- to 62-MHz internal oscillator over full temperature and voltage range
• 4- to 25-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, 33, and 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 CY8C3866LTI-068 model is suitable for various applications requiring MCU, memory, analog, and digital peripheral functions in a single chip. It can be used in signal acquisition, signal processing, and control systems that require high accuracy, high bandwidth, and high flexibility. It is also suitable for designs that require analog capability spanning from thermocouples to ultrasonic signals, and can handle multiple data acquisition channels and analog inputs on every GPIO pin. With different interfacing options such as USB, multi-master I2C, and CAN, this model can cater to various communication interface needs. It is also versatile in terms of I/O system, allowing for easy integration with other peripherals and supporting functionalities like LCD direct drive and CapSense®. The CY8C3866LTI-068 is designed to handle low voltage and ultra low-power operations, making it suitable for power-sensitive applications. The model features a range of analog and digital peripherals, including programmable logic device blocks, CAN and USB interfaces, timers, counters, PWMs, and more. It is designed to provide precision, programmable clocking options and operates reliably in industrial temperature conditions.

Comparison

• Unique array of configurable blocks providing MCU, memory, analog, and digital peripheral functions in a single chip
• High accuracy, high bandwidth, and high flexibility
• Wide range of analog capability and handles multiple data acquisition channels
• Supports various communication interfaces like USB, multi-master I2C, and CAN
• Versatile I/O system allowing for easy integration with other peripherals
• Low voltage, ultra low-power operation
• Range of analog and digital peripherals supporting various functionalities
• Precision, programmable clocking options
• Reliable operation in industrial temperature conditions

No specific disadvantages were mentioned for the CY8C3866LTI-068 model.