ST10 STMICROELECTRONICS [STMicroelectronics], ST10 Datasheet - Page 41

• Manufacturer Part Number: ST10
• Description: 16-BIT MCU WITH 32K BYTE ROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

XX - ELECTRICAL CHARACTERISTICS (continued)
Notes 1. V
Sample time and conversion time of the ST10C167’s ADC are programmable. The table below should be
used to calculate the above timings.
XX.4 - AC characteristics
Test waveforms
Figure 9 : Input output waveforms
Figure 10 : Float waveforms
ADCON.15|14 (ADCTC)
X000
2. During the sample time the input capacitance C
analog source must allow the capacitance to reach its final voltage level within
analog input voltage have no effect on the conversionresult. Values for the sample clock t
from the table above.
3. This parameter includes the sample time t
the conversion result. Values for the conversion clock t
4. This parameter is fixed by ADC control logic.
5. TUE is tested at V
defined voltage range. The specified TUE is guaranteed only if an overload condition (see I
2 not selected analog input pins and the absolute sum of input overload currents on all analog input pins does not exceed 10mA.
During the reset calibration sequence the maximum TUE may be 4 LSB.
6. During the conversion the ADC’s capacitance must be repeatedly charged or discharged. The internal resistance of the reference
voltage source must allow the capacitance to reach its respective voltage level within t
from the programmed conversion timing.
7. Partially tested, guaranteed by design characterization.
AIN
H
V
0.45V
It begins to float when a 100mV change from the loaded V
or X3FF
2.4V
may exceed V
Load
00
01
10
11
Timing measurements are made at VIH min for a logic ‘1’ and VIL max for a logic ‘0’.
AC inputs during testing are driven at 2.4V for a logic ‘1’ and 0.4V for a logic ‘0’.
For timing purposes a port pin is no longer floating when V
V
H
V
, respectively.
Load
Load
AREF
+0.1V
-0.1V
AGND
= 5.0V, V
or V
Conversion clock t
Reserved, do not use
AREF
AGND
up to the absolute maximum ratings. However, the conversion result in these cases will be
TCL * 24
TCL * 96
TCL * 48
= 0V, V
S
0.2V
0.2V
, the time for determining the digital result and the time to load the result register with
CC
I
DD
DD
= 4.9V. It is guaranteed by design characterization for all other voltages within the
can be charged/discharged by the external source. The internal resistance of the
+0.9
-0.1
CC
CC
Test Points
depend on programming and can be taken from the table above.
Reference
Timing
Points
V
V
OL
OH
ADCON.13|12 (ADSTC)
0.2V
0.2V
OH
DD
DD
/V
00
01
10
-0.1
t
11
+0.9
S
. After the end of the sample time t
OL
LOAD
level occurs (I
CC
SC
changes of 100mV.
. The maximum internal resistance results
depend on programming and can be taken
OV
specification) occurs on maximum of
OH
V
/I
V
Sample clock t
OL
OH
OL
= 20mA).
+0.1V
-0.1V
t
t
t
CC
CC
CC
t
CC
S
* 2
* 4
* 8
ST10C167
, changes of the
SC
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