STM8S005C6T6 datasheet(88/103 Pages) STMICROELECTRONICS

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Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in the I/O

port pin characteristics section does not affect the ADC accuracy.

Table 45: ADC accuracy with RAIN < 10 kΩ RAIN, VDDA = 3.3 V

Unit

Max

(1)

Typ

Conditions

Parameter

Symbol

LSB

2.0

1.1

fADC = 2 MHz

Total unadjusted error

(2)

|ET|

2.5

1.6

fADC = 4 MHz

1.5

0.7

fADC = 2 MHz

Offset error

(2)

|EO|

2.0

1.3

fADC = 4 MHz

1.5

0.2

fADC = 2 MHz

Gain error

(2)

|EG|

2.0

0.5

fADC = 4 MHz

1.0

0.7

fADC = 2 MHz

Differential linearity error

(2)

|ED|

1.0

0.7

fADC = 4 MHz

1.5

0.6

fADC = 2 MHz

Integral linearity error

(2)

|EL|

1.5

0.6

fADC = 4 MHz

(1) Data based on characterisation results, not tested in production.

(2) ADC accuracy vs. negative injection current: Injecting negative current on any of the

analog input pins should be avoided as this significantly reduces the accuracy of the

conversion being performed on another analog input. It is recommended to add a Schottky

diode (pin to ground) to standard analog pins which may potentially inject negative current.

Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in I/O port

pin characteristics does not affect the ADC accuracy.

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STM8S005K6 STM8S005C6

Electrical characteristics

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