ST62T25CM6/TR STMicroelectronics, ST62T25CM6/TR Datasheet - Page 90

IC MCU 8BIT W/ADC 28-SOIC

ST62T25CM6/TR

Manufacturer Part Number
ST62T25CM6/TR
Description
IC MCU 8BIT W/ADC 28-SOIC
Manufacturer
STMicroelectronics
Series
ST6r
Datasheet

Specifications of ST62T25CM6/TR

Core Processor
ST6
Core Size
8-Bit
Speed
8MHz
Peripherals
LVD, POR, WDT
Number Of I /o
20
Program Memory Size
4KB (4K x 8)
Program Memory Type
OTP
Ram Size
64 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 6 V
Data Converters
A/D 16x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
ST6215CM-Auto ST6225CM-Auto
8-BIT ADC CHARACTERISTICS (Cont’d)
ADC Accuracy
Notes:
1. Negative injection disturbs the analog performance of the device. In particular, it induces leakage currents throughout
2. Data based on characterization results over the whole temperature range, monitored in production.
Figure 73. ADC Accuracy Characteristics
Note: ADC not present on some devices. See device summary on page 1.
90/100
1
Symbol
255
254
253
the device including the analog inputs. To avoid undesirable effects on the analog functions, care must be taken:
- Analog input pins must have a negative injection less than 1mA (assuming that the impedance of the analog voltage
is lower than the specified limits).
- Pure digital pins must have a negative injection less than 1mA. In addition, it is recommended to inject the current as
far as possible from the analog input pins.
|E
|E
|E
7
6
5
4
3
2
1
E
E
0
V
O
G
D
T
L
SSA
|
|
|
Digital Result ADCDR
1
1LSB
Total unadjusted error
Offset error
Gain Error
Differential linearity error
Integral linearity error
E
O
2
IDEAL
3
1)
Parameter
=
1)
V
---------------------------------------- -
4
DDA
5
256
1 LSB
V
1)
E
1)
SSA
6
T
IDEAL
1)
E
7
L
(2)
E
D
Conditions
f
253 254 255 256
OSC
(3)
V
DD
=8MHz
=5V
(1)
2)
E
G
V
DDA
Min
(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.
T
O
G
D
L
=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
-0.31
Typ.
0.72
0.54
1.2
IDEAL
)
2, fosc>1.2MHz
4, fosc>32KHz
Max
Unit
LSB

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