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RX21A Datasheet(PDF) 4 Page - Renesas Technology Corp |
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RX21A Datasheet(HTML) 4 Page - Renesas Technology Corp |
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4 / 132 page  R01DS0129EJ0110 Rev.1.10 Page 4 of 132 Aug 28, 2014 RX21A Group 1. Overview Communication function Serial communications interfaces (SCIc) 5 channels (channel 1, 5, 6, 8, 9) (including one channel for IrDA) Serial communications modes: Asynchronous, clock synchronous, and smart-card interface On-chip baud rate generator allows selection of the desired bit rate Choice of LSB-first or MSB-first transfer Average transfer rate clock can be input from TMR timers (SCI5 and SCI6) Simple IIC Simple SPI IrDA interface (IRDA) 1 channel (SCI5 is used) Supports encoding/decoding the waveforms conforming to the IrDA specification version 1.0 I2C bus interface (RIIC) 2 channels Communications formats: I2C bus format/SMBus format Master/slave selectable Supports the fast mode Serial peripheral interface (RSPI) 2 channels Transfer facility Using the MOSI (master out, slave in), MISO (master in, slave out), SSL (slave select), and RSPI clock (RSPCK) signals enables serial transfer through SPI operation (four lines) or clock- synchronous operation (three lines) Capable of handling serial transfer as a master or slave Data formats Choice of LSB-first or MSB-first transfer The number of bits in each transfer can be changed to any number of bits from 8 to 16, 20, 24, or 32 bits. 128-bit buffers for transmission and reception Up to four frames can be transmitted or received in a single transfer operation (with each frame having up to 32 bits) Double buffers for both transmission and reception 24-bit ∆Σ A/D converter (DSAD) 7 channels: 4-channel differential input for current; 3-channel single-ended input for voltage x 1 to x 64 PGA for differential input side for current and x 1 to x 4 PGA for single-ended input side for voltage Minimum conversion time: 81.92 μs (A/D conversion clock: 25 MHz) 10-bit A/D converter (AD) 10 bits (7 channels x 1 unit) 10-bit resolution Conversion time: 2.0 μs per channel (A/D conversion clock: 25 MHz) Operating modes Scan mode (single scan mode and continuous scan mode) Sample-and-hold function Self-diagnosis for the A/D converter Assistance in detecting disconnected analog inputs A/D conversion start conditions Conversion can be started by software, a conversion start trigger from a timer (MTU), an external trigger signal, a temperature sensor or ELC. Temperature sensor (TEMPSa) Outputs the voltage that changes depending on the temperature PGA gain switchable: Three levels according to the voltage range D/A converter (DA) 2 channels 10-bit resolution Output voltage: 0 V to VREFH CRC calculator (CRC) CRC code generation for arbitrary amounts of data in 8-bit units Select any of three generating polynomials: X8 + X2 + X + 1, X16 + X15 + X2 + 1, or X16 + X12 + X5 + 1 Generation of CRC codes for use with LSB-first or MSB-first communications is selectable. Data encryption unit (DEU)*1 Encryption and decryption of AES 128-, 192-, or 256-bit key length ECB or CBC mode Comparator A (CMPA) 2 channels Comparison of reference voltage and analog input voltage Comparator B (CMPB) 2 channels Comparison of reference voltage and analog input voltage Data operating circuit (DOC) Comparison, addition, and subtraction of 16-bit data Power supply voltage/ Operating frequency VCC = 1.8 to 3.6 V: 25 MHz, VCC = 2.7 to 3.6 V: 50 MHz Supply current 8.6mA@50MHz (typ) Operating temperature D version: –40 to +85°C, G version: –40 to +105°C*2, *3 Table 1.1 Outline of Specifications (3 / 4) Classification Module/Function Description |
Similar Part No. - RX21A_15 |
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Similar Description - RX21A_15 |
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