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MSC1211 Description
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1.1 MSC1211 Description
The MSC1211 is a precision 24-bit delta-sigma analog-to-digital converter
(ADC) with an 8051 microcontroller, and up to 32K of flash memory. It has eight
differential/single-ended analog inputs. The delta-sigma architecture
employed in the MSC1211 enables the device to achieve 22 bits of effective
resolution (0.45 ppm RMS noise) at a data rate of 10Hz. It can be programmed
for other data rates up to 1kHz that have lower effective resolution. In addition
to the standard 8051 peripherals and functions, the MSC1211 includes four
16-bit digital-to-analog converters (DACs), a 32-bit accumulator, a high-speed
SPI or I
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C interface, a 16-bit PWM output, data flash memory, 1,280 bytes of
data RAM, dual UARTS, and dual DPTR registers.
The MSC1211 has an enhanced 8051 core that only requires 4 clock cycles per
machine cycle. It has extra timers, watchdog, brownout and low-voltage detect
circuits, power management control and hardware breakpoint registers.
1.2 EVM System Overview
A block diagram of the MSC1211EVM is shown in Figure 1–1.
During normal operation, programs are developed on the PC and then down-
loaded into the MSC1211 for execution. The primary development environ-
ment is Raisonance for assembly and C language programming. There is also
a BASIC–52 and a Basic interpreter available from MDL–Labs.
Figure 1–1. MSC1211EVM Block Diagram