MSC1202

The MSC1201Yx/MSC1202Yx are completely integrated families of mixed-signal devices incorporating a high-resolution, delta-sigma ADC, 8-bit IDAC, 8-channel
multiplexer, burnout detect current sources, selectable buffered input, offset DAC, programmable gain amplifier (PGA), temperature sensor, voltage reference, 8-bit microcontroller, Flash Program Memory, Flash Data Memory, and Data SRAM, as shown in Figure 3.

On-chip peripherals include an additional 32-bit accumulator, basic SPI, basic I2C, USART, multiple digital input/output ports, watchdog timer, low-voltage detect, on-chip power-on reset, brownout reset, timer/counters, system clock divider, PLL, on-chip oscillator, and external interrupts.

The devices accept low-level differential or single-ended signals directly from a transducer. The ADC provides 24 bits (MSC1201) or 16 bits (MSC1202) of re solution and 24 bits (MSC1201) or 16 bits (MSC1202) of no-missing-code performance using a Sinc³ filter with a programmablesample rate. The ADC also has a selectable filter that allows for high-resolution single-cycle conversion.

The microcontroller core is 8051 instruction set compatible. The microcontroller core is an optimized 8051 core that executes up to three times faster than the standard 8051 core, given the same clock source. This makes it possible to run the device at a lower external clock frequency and achieve the same performance at lower power than the standard 8051 core.

The MSC1201Yx/MSC1202Yx allow the user to uniquely configure the Flash Memory map to meet the needs of their application. The Flash is programmable down to +2.7V using serial programming. Flash endurance is typically 1M Erase/Write cycles.

The parts have separate analog and digital supplies, which can be independently powered from +2.7V to +5.25V. At +3V operation, the power dissipation for the part is typically less than 3mW. The MSC1201Yx/MSC1202Yx are both packaged in a QFN-36 package.

The MSC1201Yx/MSC1202Yx are designed for high-resolution measurement applications in smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation.