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CY8C5385AXI-043 Datasheet(PDF) 4 Page - Cypress Semiconductor |
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CY8C5385AXI-043 Datasheet(HTML) 4 Page - Cypress Semiconductor |
4 / 102 page PRELIMINARY PSoC® 5: CY8C53 Family Datasheet Document Number: 001-55035 Rev. *G Page 4 of 102 Figure 1-1 illustrates the major components of the CY8C53 family. They are: ARM Cortex-M3 CPU subsystem Nonvolatile subsystem Programming, debug, and test subsystem Inputs and outputs Clocking Power Digital subsystem Analog subsystem PSoC’s digital subsystem provides half of its unique configurability. It connects a digital signal from any peripheral to any pin through the digital system interconnect (DSI). It also provides functional flexibility through an array of small, fast, low-power UDBs. PSoC Creator provides a library of pre-built and tested standard digital peripherals (UART, SPI, LIN, PRS, CRC, timer, counter, PWM, AND, OR, and so on) that are mapped to the UDB array. The designer can also easily create a digital circuit using boolean primitives by means of graphical design entry. Each UDB contains programmable array logic (PAL)/programmable logic device (PLD) functionality, together with a small state machine engine to support a wide variety of peripherals. In addition to the flexibility of the UDB array, PSoC also provides configurable digital blocks targeted at specific functions. For the CY8C53 family these blocks can include four 16-bit timer, counter, and PWM blocks; I2C slave, master, and multimaster; Full-Speed USB; and Full CAN 2.0b. For more details on the peripherals see the “Example Peripherals” section on page 34 of this datasheet. For information on UDBs, DSI, and other digital blocks, see the “Digital Subsystem” section on page 34 of this datasheet. PSoC’s analog subsystem is the second half of its unique configurability. All analog performance is based on a highly accurate absolute voltage reference with less than 0.1% error over temperature and voltage. The configurable analog subsystem includes: Analog muxes Comparators Analog mixers Voltage references Analog-to-Digital Converters (ADC) Digital-to-Analog Converters (DACs) All GPIO pins can route analog signals into and out of the device using the internal analog bus. This allows the device to interface up to 62 discrete analog signals. The CY8C53 family also offers a SAR ADC. Featuring 12-bit conversions at up to 1 M samples per second, it also offers low nonlinearity and offset errors and SNR better than 70 dB. It is well suited for a variety of higher speed analog applications. Two high speed voltage or current DACs support 8-bit output signals at an update rate of up to 8 Msps. They can be routed out of any GPIO pin. You can create higher resolution voltage DAC outputs using the UDB array. This can be used to create a pulse width modulated (PWM) DAC of up to 10 bits, at up to 48 kHz. The digital DACs in each UDB support PWM, PRS, or delta-sigma algorithms with programmable widths. In addition to the ADC and DACs, the analog subsystem provides multiple: Comparators Uncommitted opamps Configurable switched capacitor/continuous time (SC/CT) blocks. These support: Transimpedance amplifiers Programmable gain amplifiers Mixers Other similar analog components See the “Analog Subsystem” section on page 47 of this datasheet for more details. PSoC’s CPU subsystem is built around a 32-bit three-stage pipelined ARM Cortex-M3 processor running at up to 80 MHz. The Cortex-M3 includes a tightly integrated nested vectored interrupt controller (NVIC) and various debug and trace modules. The overall CPU subsystem includes a DMA controller, flash cache, and RAM. The NVIC provides low latency, nested interrupts, and tail-chaining of interrupts and other features to increase the efficiency of interrupt handling. The DMA controller enables peripherals to exchange data without CPU involvement. This allows the CPU to run slower (saving power) or use those CPU cycles to improve the performance of firmware algorithms. The flash cache also reduces system power consumption by allowing less frequent flash access. PSoC’s nonvolatile subsystem consists of flash, byte-writeable EEPROM, and nonvolatile configuration options. It provides up to 256 KB of on-chip flash. The CPU can reprogram individual blocks of flash, enabling boot loaders. The designer can enable an error correcting code (ECC) for high reliability applications. A powerful and flexible protection model secures the user's sensitive information, allowing selective memory block locking for read and write protection. Two KB of byte-writable EEPROM is available on-chip to store application data. Additionally, selected configuration options such as boot speed and pin drive mode are stored in nonvolatile memory. This allows settings to activate immediately after POR. [+] Feedback |
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