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CY8C5668AXI-LP034 Datasheet(PDF) 4 Page - Cypress Semiconductor |
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CY8C5668AXI-LP034 Datasheet(HTML) 4 Page - Cypress Semiconductor |
4 / 120 page PSoC® 5LP: CY8C56LP Family Datasheet Document Number: 001-84935 Rev. *C Page 4 of 120 For more details on the peripherals see the “Example Peripherals” section on page 35 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 ADCs DACs DFB 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. Some CY8C56LP devices offer a fast, accurate, configurable delta-sigma ADC with these features: Less than 100 µV offset A gain error of 0.2 percent INL less than ±1 LSB DNL less than ±1 LSB SINAD better than 66 dB The CY8C56LP family also offers one or two successive approximation register (SAR) ADCs, depending on device selected. Featuring 12-bit conversions at up to 1 M samples per second, they also offer low nonlinearity and offset errors and SNR better than 70 dB. They are well suited for a variety of higher speed analog applications. The output of either ADC can optionally feed the programmable DFB via DMA without CPU intervention. You can configure the DFB to perform IIR and FIR digital filters and several user defined custom functions. The DFB can implement filters with up to 64 taps. It can perform a 48-bit multiply-accumulate (MAC) operation in one clock cycle. Four 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 PWM 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 ADCs, DACs, and DFB, 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 46 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 67 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. You can enable an 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 power on reset (POR). The three types of PSoC I/O are extremely flexible. All I/Os have many drive modes that are set at POR. PSoC also provides up to four I/O voltage domains through the VDDIO pins. Every GPIO has analog I/O, LCD drive, CapSense, flexible interrupt generation, slew rate control, and digital I/O capability. The SIOs on PSoC allow VOH to be set independently of VDDIO when used as outputs. When SIOs are in input mode they are high impedance. This is true even when the device is not powered or when the pin voltage goes above the supply voltage. This makes the SIO ideally suited for use on an I2C bus where the PSoC may not be powered when other devices on the bus are. The SIO pins also have high current sink capability for applications such as LED drives. The programmable input threshold feature of the SIO can be used to make the SIO function as a general purpose analog comparator. For devices with FS USB the USB physical interface is also provided (USBIO). When not using USB these pins may also be used for limited digital functionality and device programming. All the features of the PSoC I/Os are covered in detail in the “I/O System and Routing” section on page 28 of this datasheet. The PSoC device incorporates flexible internal clock generators, designed for high stability and factory trimmed for high accuracy. The Internal Main Oscillator (IMO) is the master clock base for the system, and has 1% accuracy at 3 MHz. The IMO can be configured to run from 3 MHz up to 62 MHz. Multiple clock derivatives can be generated from the main clock frequency to meet application needs. The device provides a PLL to generate system clock frequencies up to 67 MHz from the IMO, external crystal, or external reference clock. 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