ST7LITE25F2 STMicroelectronics, ST7LITE25F2 Datasheet - Page 116

• Manufacturer Part Number: ST7LITE25F2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7LITE25F2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55˚C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

ST7LITE2
ADC CHARACTERISTICS (Cont’d)
ADC Accuracy with V
Notes:
1. Data based on characterization results over the whole temperature range, not tested in production.
2. Injecting negative current on any of the analog input pins significantly reduces the accuracy of any conversion being
performed on any analog input.
Analog pins can be protected against negative injection by adding a Schottky diode (pin to ground). Injecting negative
current on digital input pins degrades ADC accuracy especially if performed on a pin close to the analog input pins.
Any positive injection current within the limits specified for I
accuracy.
Figure 90. ADC Accuracy Characteristics with amplifier disabled
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Symbol
1023
1022
1021
|E
|E
|E
|E
|E
7
6
5
4
3
2
1
0
O
G
T
D
L
V
|
|
|
|
|
SS
Digital Result ADCDR
1LSB
1
Total unadjusted error
Offset error
Gain Error
Differential linearity error
Integral linearity error
E
O
2
IDEAL
Parameter
3
2)
=
2)
V
------------------------------- -
4
DD
DD
1024
=5.0V
–
5
1 LSB
V
SS
2)
2)
E
6
T
IDEAL
2)
E
7
L
f
CPU
(2)
=8MHz, f
E
D
1021 1022 1023 1024
(3)
Conditions
ADC
=4MHz
INJ(PIN)
(1)
E
G
and ΣI
1)
V
, V
DD
DD
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
between the actual and the ideal transfer curves.
E
transition and the first ideal one.
E
transition and the last actual one.
E
between actual steps and the ideal one.
E
between any actual transition and the end point
correlation line.
INJ(PIN)
T
O
G
D
L
=5.0V
=Total Unadjusted Error: maximum deviation
=Integral Linearity Error: maximum deviation
=Differential Linearity Error: maximum deviation
=Offset Error: deviation between the first actual
=Gain Error: deviation between the last ideal
V
in
(LSB
in
Section 13.8
IDEAL
Typ
1.5
2.5
2.5
3
2
)
does not affect the ADC
Max
4.5
4.5
4.5
6
5
1)
Unit
LSB