ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 155

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 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.
• 256 Bytes Data Eeprom With Read-out Protection. 300k 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

ST7DALIF2
Table 90.
1.
2.
Figure 93. ADC accuracy characteristics with amplifier disabled
Glossary:
E
curves.
E
E
E
E
point correlation line.
Symbol
T
O
G
D
L
=Total Unadjusted Error: maximum deviation between the actual and the ideal transfer
=Integral Linearity Error: maximum deviation between any actual transition and the end
|E
|E
|E
=Differential Linearity Error: maximum deviation between actual steps and the ideal one.
|E
|E
=Offset Error: deviation between the first actual transition and the first ideal one.
=Gain Error: deviation between the last ideal transition and the last actual one.
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.
Data based on characterization results over the whole temperature range, not tested in production.
O
G
D
T
L
|
|
|
|
|
1023
1022
1021
7
6
5
4
3
2
1
Total unadjusted error
(1)
Offset error
Gain Error
Differential linearity
error
Integral linearity error
0
V
ADC Accuracy with V
SS
Digital Result ADCDR
2)
Parameter
1
E
O
1LSB
2)
2)
2
IDEAL
3
=
V
------------------------------- -
( Ideal transfer curve )
4
DD
2)
1024
–
f
V
V
CPU
5
SS
1 LSB
DD
DD
=5.0 V
=8 MHz, f
E
6
=5.0 V
T
IDEAL
E
7
L
Conditions
INJ(PIN)
ADC
E
=4 MHz
D
and ΣI
1021 1022 1023 1024
INJ(PIN)
(2)
,
( example of actual transfer curve )
in
Section 20.2
E
( endpoint correlation line )
G
Electrical characteristics
Typ
V
1.5
2.5
2.5
3
2
DD
does not affect the ADC
V
Max
in
4.5
4.5
4.5
(LSB
6
5
1)
IDEAL
)
155/171
Unit
LSB