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ST72589BW Datasheet(PDF) 151 Page - STMicroelectronics

Part # ST72589BW
Description  8-BIT MCU WITH NESTED INTERRUPTS, DOT MATRIX LCD, ADC, TIMERS, PWM-BRM, SPI, SCI, I²C, CAN INTERFACES
PDF  158 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72589BW Datasheet(HTML) 151 Page - STMicroelectronics

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MEMORY AND PERIPHERAL CHARACTERISTICS - ADC (Cont’d)
*Note:
ADC Accuracy vs. Negative Injection Current:
For Iinj-=0.8mA, the typical leakage induced inside the die is 1.6µA and the effect on the ADC accuracy is a loss of 1 LSB
by 10K
Ω increase of the external analog source impedance.
These measurements results and recommendations are done in the worst condition of injection:
- negative injection
- injection to an Input with analog capability,adjacent to the enabled Analog Input
- at 5V VDD supply, and worse temperature case.
ADC Analog to Digital Converter (8-bit) for ROM devices
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fADC
Analog control frequency
fADC = fCPU/2
4
MHz
|TUE|
Total unadjusted error*
fCPU=8MHz, fADC=4MHz
VDD=VDDA=5V
1.5
LSB
OE
Offset error*
-1
1
GE
Gain Error*
-0.6
0.6
|DLE|
Differential linearity error*
1
|ILE|
Integral linearity error*
1.2
VAIN
Conversion range voltage
VSSA
VDDA
V
IADC
A/D conversion supply current
fCPU=8MHz, fADC=4MHz
VDD=VDDA=5V
1mA
tSTAB
Stabilization time after enable ADC
1
µs
tLOAD
Sample capacitor loading time
1
4
µs
1/fADC
tCONV
Hold conversion time
2
8
µs
1/fADC
RAIN
External input resistor
15
ΚΩ
RADC
Internal input resistor
1.5
ΚΩ
CSAMPLE Sample capacitor
6
pF



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