MSP430X20X1 Datasheet, PDF (38/80 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430x20x1, MSP430x20x2, MSP430x20x3
MIXED SIGNAL MICROCONTROLLER
SLAS491A − AUGUST 2005 − REVISED OCTOBER 2005
MSP430x20x2 electrical characteristics over recommended ranges of supply voltage and
operating free-air temperature (unless otherwise noted) (continued)
10-bit ADC, power supply and input range conditions (see Note 1, MSP430x20x2 only)
PARAMETER
TEST CONDITIONS
VCC
MIN TYP MAX UNIT
VCC
VAx
Analog supply voltage range
Analog input voltage range
(see Note 2)
VSS = 0 V
All Ax terminals.
Analog inputs selected in ADC10AE
register.
2.2
3.6 V
0
VCC V
IADC10
ADC10 supply current
(see Note 3)
fADC10CLK = 5.0 MHz
ADC10ON = 1, REFON = 0
ADC10SHT0 = 1, ADC10SHT1 = 0,
ADC10DIV = 0
2.2 V
3V
0.52 1.05
mA
0.6 1.2
IREF+
Reference supply current,
reference buffer disabled
(see Note 4)
fADC10CLK = 5.0 MHz
ADC10ON = 0,
REFON = 1,
REFOUT = 0
REF2_5V=0
REF2_5V=1
2.2 V/3 V
3V
mA
0.25 0.4
mA
IREFB
Reference buffer supply current
(see Note 4)
fADC10CLK = 5.0 MHz
ADC10ON = 0,
REFON = 1,
REF2_5V = 0
REFOUT = 1
ADC10SR=0
ADC10SR=1
2.2 V/3 V
2.2 V/3 V
1.1 1.4 mA
0.46 0.55 mA
CI
Input capacitance
Only one terminal Ax selected at a
time
27 pF
RI
NOTES:
Input MUX ON resistance
0V ≤ VAx ≤ VCC
2.2 V/3 V
2000 Ω
1. The leakage current is defined in the leakage current table with Px.x/Ax parameter.
2. The analog input voltage range must be within the selected reference voltage range VR+ to VR− for valid conversion results.
3. The internal reference supply current is not included in current consumption parameter IADC10.
4. The internal reference current is supplied via terminal VCC. Consumption is independent of the ADC10ON control bit, unless a
conversion is active. The REFON bit enables the built-in reference to settle before starting an A/D conversion.
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