Atmel offers an 80C51-based microcontroller family that has on-chip 10 bit, 8-channel ADC and a programmable dual clock system allowing advanced mastering of speed and power consumption. This microcontroller includes a full programmable counter array (PCA) for pulse width modulation (PWM), capture/compare, timers, counters and watchdog capabilities, as well as an industry-standard serial peripheral interface (SPI). According to Atmel they are perfectly suited to applications which require optimisation of power consumption and component count, such as industrial process control and consumer appliances.
A dual system clock allows realtime clock (RTC) function using 32 kHz and one timer. It integrates an internal RC oscillator at 12 MHz, a programmable prescaler and works both with a reference crystal or a ceramic oscillator of 32 kHz or 4 to 33 MHz. The T8xC5111/12 A/D converter can accept an external positive voltage ranging from 2,4 V to Vcc. It also includes an internal positive voltage reference of 2,4 V. The internal voltage reference can also be used externally reducing the need for external component.
The T8xC5111 and T8xC5112 feature respectively 4 and 8 KB of ROM or OTP memory and 256 bytes of RAM. Both ROM and OTPs benefit from the Secured ROM Check (SRM) with 64 bytes encryption array and three security levels. Products operate at 66 MHz at 5 V or 40 MHz at 3 V.
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