spear-09-h022 STMicroelectronics, spear-09-h022 Datasheet - Page 59

• Manufacturer Part Number: spear-09-h022
• Description: Spear Head Arm 926, 200k Customizable Easic Gates, Large Ip Portfolio Soc
• Manufacturer: STMicroelectronics

SPEAR-09-H022
20
20.1
20.2
ADC
Overview
The ADC integrated in SPEAr Head200 is the ST-ADC8MUX16 and it is connected to APB
Bus. It is a successive approximation ADC and its main features are:
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For any ADC input channel the number of collected samples for the average can be 1 or 2's
power, up to 128.
Positive and negative reference voltages are supply by dedicated pins:
Functional description
Conversion starts when enabling bit is set to 1; as it finishes, an interrupt signal is generated
(a bit of conversion ready is set to 1). At this point the reading of the data could begin and
when it finishes, conversion ready and the enabling bits becomes 0.
The signals accessible off-chip are listed in
Table 15.
8 bit resolutions
230 Ksps
16 analog input channels (0 - 3.3 V)
INL ± 1 LSB
DNL ± 0.5 LSB
Programmable conversion speed - minimum conversion time 4.3 µs
–
–
AID[15:0]
SIGNAL
positive → VREFP_adc pin
negative → VREFN_adc pin
External pins of ADC macro
DIRECTION
Input
Table 15
Analog channels
External pins of ADC macro.
DESCRIPTION
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ADC