st10f269z1 STMicroelectronics, st10f269z1 Datasheet - Page 146

• Manufacturer Part Number: st10f269z1
• Description: St10f269 16-bit Mcu With Mac Unit, 256k Byte Flash Memory And 12k Byte Ram
• Manufacturer: STMicroelectronics

Table 43 : ADC Sampling and Conversion Timing (TQFP144 devices)
A complete conversion will take 14
time includes the conversion itself, the sample time and the time required to transfer the digital value to
the result register.
21.4 - AC characteristics
21.4.1 - Test Waveforms
Figure 66 : Input / Output Waveforms
Figure 67 : Float Waveforms
21.4.2 - Definition of Internal Timing
The internal operation of the ST10F269 is
controlled by the internal CPU clock f
edges of the CPU clock can trigger internal (for
146/184
ADCON.15/14
ADCTC
For timing purposes a port pin is no longer floating when V
It begins to float when a 100mV change from the loaded V
AC inputs during testing are driven at 2.4V for a logic ‘1’ and 0.4V for a logic ‘0’.
Timing measurements are made at V
00
01
10
11
0.45V
2.4V
V
Load
V
V
Reserved, do not use
Load
Load
TCL = 1/2 x f
+0.1V
-0.1V
TCL x 24
TCL x 96
TCL x 48
Conversion Clock t
XTAL
t
0.2V
0.2V
CC
At f
+ 2 t
DD
DD
CPU
CPU
Reserved
IH
+0.9
-0.1
0.375 s
0.75 s
CC
1.5 s
. Both
SC
Test Points
min for a logic ‘1’ and V
= 32MHz
+ 4 TCL (fastest convertion rate = 6.06 s at 32MHz). This
Reference
Timing
Points
V
V
OL
OH
0.2V
0.2V
example pipeline) or external (for example bus
cycles) operations.
The specification of the external timing (AC
Characteristics) therefore depends on the time
ADCON.13/12
DD
DD
ADSTC
-0.1
+0.9
00
01
10
11
OH
LOAD
/V
OL
IL
changes of ±100mV.
max for a logic ‘0’.
level occurs (I
t
t
t
CC
CC
CC
t
SC
t
CC
x 2
x 4
x 8
Sample Clock t
=
V
V
OL
OH
OH
+0.1V
-0.1V
/I
and ADCTC = 00
OL
At f
= 20mA).
CPU
0.375 s
ST10F269
0.75 s
1.50 s
3.00 s
SC
= 32MHz