ST10F166 datasheet(20/62 Pages) STMICROELECTRONICS

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ST10F166

9 A/D CONVERTER

For analog signal measurement, a 10-bit A/D converter with 10 multiplexed input

channels, a sample and hold circuit has been integrated on-chip. It uses the method

of successive approximation which returns the conversion result for an analog chan-

nel within 9.75

µs (@fosc = 40 MHz).

Overrun error detection capability is provided for the conversion result register (ADD-

AT): an interrupt request will be generated when the result of a previous conversion

has not been read from the result register at the time the next conversion is complete.

For applications which require less than 10 analog input channels, the remaining

channels can be used as digital input port pins.

The A/D converter of the ST10F166 supports four different conversion modes. In the

standard Single Channel conversion mode, the analog level on a specified channel is

once sampled and converted into a digital result. In the Single Channel Continuous

mode, the analog level is repeatedly sampled and converted without software inter-

vention. In the Auto Scan mode, the analog levels on a prespecified number of chan-

nels are sequentially sampled and converted. In the Auto Scan Continuous mode, the

number of prespecified channels is repeatedly sampled and converted.

The Peripheral Event Controller (PEC) may be used to automatically store the con-

version results into a table in memory for later evaluation, without requiring the over-

head of entering and exiting interrupt routines for each data transfer.

ST10F166 数据表(PDF) 20 Page - STMicroelectronics