Mixed-signal array takes more memory onboard

Cypress MicroSystems has begun production shipments of its smallest and most highly integrated PSoC mixed-signal array.

Cypress MicroSystems has begun production shipments of its smallest and most highly integrated PSoC mixed-signal array.

In addition to four configurable analogue blocks and four configurable digital blocks, the CY8C21x34 devices provide 8Kbyte of Flash memory for program storage and 512byte of SRAM for data, making it ideal for cost-sensitive consumer and industrial control applications such as touch-sensitive control panels, security sensors and control, smart temperature, pressure and flow sensors, large sensor arrays, fan controllers and battery chargers.

The new PSoC's built-in low-on-resistance 28:1 analogue input multiplexer greatly simplifies sensor-control designs.

Each of the up to 28 pins has a switch that, when selected, connects it to an analogue bus.

The bus connects to a configurable analogue array which, when combined with on-chip digital resources, enables the creation of complex signal processors.

"The CY8C21x34 offers users the expanded Flash program memory, analogue configurability and system integration that they need at a price they can easily afford", said John McDonald, Vice President of Marketing for Cypress MicroSystems.

"This flexibility increases PSoC's core value proposition - and now the already low-priced PSoC solution can further reduce component cost by replacing expensive off-chip multiplexers".

The CY8C21x34's analogue and digital blocks can be configured as 8bit timers, counters and pulsewidth modulators (PWMs).

For example, the new device can integrate a full-duplex UART, I2C, SPI, two 10bit ADCs, and a 28:1 low-on-resistance analogue multiplexer in a single chip, whereas competing devices require a multichip solution.

This lowers the overall device count, reduces board size and lowers BOM cost in addition to improving system quality and reliability.

The CY8C21x34, is available in 16 SOIC, 20/28 SSOP and 32 5x5 MLF.

It operates between 2.4 and 5.25V from -40 to +85C.

The product is in production and priced as low as $0.99 in 10,000-unit quantities.

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