PSoC® 3: CY8C38 Family
Data Sheet
Programmable System-on-Chip (PSoC®)
General Description
With its unique array of configurable blocks, PSoC® 3 is a true system level solution providing microcontroller unit (MCU), memory,
analog, and digital peripheral functions in a single chip. 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 general-purpose input/output (GPIO) pin. The CY8C38 family is also a high-performance configurable digital system with some
part numbers including interfaces such as USB, multimaster inter-integrated circuit (I2C), and controller area network (CAN). In
addition to communication interfaces, the CY8C38 family has an easy to configure logic array, flexible routing to all I/O pins, and a
high-performance single cycle 8051 microprocessor core. You can easily create system-level designs using a rich library of prebuilt
components and boolean primitives using PSoC Creator™, a hierarchical schematic design entry tool. The CY8C38 family provides
unparalleled opportunities for analog and digital bill of materials integration while easily accommodating last minute design changes
through simple firmware updates.
Library of standard peripherals
• 8-, 16-, 24-, and 32-bit timers, counters, and PWMs
Features
Single cycle 8051 CPU
• Serial peripheral interface (SPI), universal asynchronous
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
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
Low voltage, ultra low-power
Wide operating voltage range: 0.5 V to 5.5 V
Highefficiencyboostregulatorfrom0.5-Vinputthrough1.8-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
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
Versatile I/O system
28 to 72 I/O (62 GPIOs, eight special input/outputs (SIO),
Programming, debug, and trace
JTAG (4-wire), serial wire debug (SWD) (2-wire), and single
wire viewer (SWV) interfaces
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
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
Configurable GPIO pin state at power-on reset (POR)
25 mA sink on SIO
Digital peripherals
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
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
Notes
1. AHB – AMBA (advanced microcontroller bus architecture) high-performance bus, an ARM data transfer bus
2. This feature on select devices only. See Ordering Information on page 116 for details.
3. GPIOs with opamp outputs are not recommended for use with CapSense.
Cypress Semiconductor Corporation
Document Number: 001-11729 Rev. *R
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised March 30, 2011
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