ST10F280 datasheet(105/186 Pages) STMICROELECTRONICS

105 / 186 page

ST10F280

105/186

13 - A/D CONVERTER

13.1 - A/D Converter Module

A 10-bit A/D converter with 2 x 16 multiplexed

input channels and a sample and hold circuit is

integrated on-chip. This A/D Converter does not

have the self-calibration feature. Thus, guaran-

teed Total Unadjusted Error is + 2 LSB. Refer to

Section 20.3.1 - A/D Converter Characteristics for

detailled characteristics. The sample time (for

loading the capacitors) and the conversion time is

programmable and can be adjusted to the exter-

nal circuitry. Convertion time is fully equivalent to

the one of previous generation A/D self-calibrated

Converter.

To remove high frequency components from the

analog input signal, a low-pass filter must be con-

nected at the ADC input.

Overrun error detection/protection is controlled by

the ADDAT register. Either an interrupt request is

generated when the result of a previous conver-

sion has not been read from the result register at

the time the next conversion is complete, or the

next conversion is suspended until the previous

result has been read. For applications which

require less than 16 analog input channels, the

remaining channel inputs can be used as digital

input port pins.

The A/D converter of the ST10F280 supports four

different conversion modes:

Single channel conversion mode the analog

level on a specified channel is sampled once and

converted to a digital result.

Single channel continuous mode the analog

level on a specified channel is repeatedly sampled

and converted without software intervention.

Auto scan mode the analog levels on a pre-spec-

ified number of channels are sequentially sampled

and converted.

Auto scan continuous mode the number of

pre-specified channels is repeatedly sampled and

converted.

Channel Injection Mode injects a channel into a

running

sequence

without

disturbing

this

sequence. The peripheral event controller stores

the conversion results in memory without entering

and exiting interrupt routines for each data transfer.

ST10F280 数据表(PDF) 105 Page - STMicroelectronics

ST10F280 数据表(HTML) 105 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载