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MSC1210 Datasheet(PDF) 22 Page - Texas Instruments |
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MSC1210 Datasheet(HTML) 22 Page - Texas Instruments |
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22 / 83 page  MSC1210 SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004 www.ti.com 22 Family Device Compatibility The hardware functionality and pin configuration across the MSC1210 family are fully compatible. To the user the only difference between family members is the memory configuration. This makes migration between family members simple. Code written for the MSC1210Y2 can be executed directly on an MSC1210Y3, MSC1210Y4, or MSC1210Y5. This gives the user the ability to add or subtract software functions and to freely migrate between family members. Thus, the MSC1210 can become a standard device used across several application platforms. Family Development Tools The MSC1210 is fully compatible with the standard 8051 instruction set. This means that the user can develop software for the MSC1210 with their existing 8051 development tools. Additionally, a complete, integrated development environment is provided with each demo board, and third-party developers also provide support. Power Down Modes The MSC1210 can power several of the on-chip peripherals and put the CPU into IDLE. For more information, see page 26. OVERVIEW The MSC1210 ADC structure is shown in Figure 11. The figure lists the components that make up the ADC, along with the corresponding special function register (SFR) associated with each component. INPUT MULTIPLEXER The input multiplexer provides for any combination of differential inputs to be selected as the input channel, as shown in Figure 12. If AIN0 is selected as the positive differential input channel, any other channel can be selected as the negative differential input channel. With this method, it is possible to have up to eight fully differential input channels. It is also possible to switch the polarity of the differential input pair to negate any offset voltages. In addition, current sources are supplied that will source or sink current to detect open or short circuits on the pins. TEMPERATURE SENSOR On-chip diodes provide temperature sensing capability. When the configuration register for the input MUX is set to all 1s, the diodes are connected to the input of the ADC. All other channels are open. Σ Σ X Input Multiplexer Temperature Sensor Buffer PGA Sample and Hold ADMUX D7 H REFIN+ REFIN − REFIN+ f MO D REFIN − AIN5 AIN6 AIN7 AINCOM ADCON1 DD H ADCON2 DE H ADCON3 DF H OCR GCR ADRES SUMR D3 H D2H D1H D6 H D5H D4H DB H DAH D9H E5 H E4H E3H E2H Offset Calibration Register ADC0N0 DC H ACLK F6 H SSCON E1 H ODAC E6 H Offset DAC ∆Σ ADC Modulator FAST SINC2 SINC3 AUTO ADC Result Register Σ Summation Block V IN AIN2 AIN3 AIN4 AIN0 AIN1 f SA M P f DA TA Gain Calibration Register Burnout Detect AV DD In+ AGND In − Burnout Detect Figure 11. MSC1210 ADC Structure |
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