New 8-bit family has 50% less power consumption and higher performance

9 October 2002 DSP, Micros & Memory

Philips Semiconductors has released a new family of 8-bit microcontrollers that it claims require 50% less power, making them ideal for handheld portable devices. The 80C51X2 family of microcontrollers support both 6-clock and 12-clock operation, and performs over a wide operating range of 2,7 to 5,5 V with up to 50% less power consumption when compared to the original 12 clock 80C51 family.

By supporting 6-clock operation to an oscillator frequency of 30 MHz, the 80C51X2 performance range is extended to approximately twice the original 80C51 maximum performance. This lets designers stay with the 80C51 in applications requiring higher performance without having to change architectures. Additionally, selecting the 6-clock mode benefits the design by improving electromagnetic compatibility (EMC), reducing power consumption and lowering system cost.

The 80C51X2 family is based on a high-performance static CMOS 80C51 design for low-power, low-voltage systems. Two software selectable modes of power reduction, either idle or power-down, help designers optimise the microcontroller for ultra low power operation. The idle mode freezes the CPU while allowing the RAM, timers, serial port, and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the oscillator, causing all other chip functions (except response to external interrupts/reset) to be inoperative. Because the design is static, the clock can be stopped without loss of user data and the execution can be resumed from the point when the clock was stopped. These features offer flexibility in handheld portable applications.

The family of 80C51X2 is suitable for a wide range of applications and consists of 14 microcontrollers which includes romless devices and devices with up to 32K Flash, one time programmable (OTP) or ROM memory.

For more information contact Mutronics (Value Added Distributor), 011 608 1460.

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