sak-xc2365a-72fxxl Infineon Technologies Corporation, sak-xc2365a-72fxxl Datasheet - Page 88

• Manufacturer Part Number: sak-xc2365a-72fxxl
• Description: 16/32-bit Single-chip Microcontroller With 32-bit Performance
• Manufacturer: Infineon Technologies Corporation

Sample time and conversion time of the XC236xA’s A/D converters are programmable.
The timing above can be calculated using
The limit values for
Table 19
GLOBCTR.5-0
(DIVA)
000000
000001
000010
:
111110
111111
1) The selected sample time is doubled if broken wire detection is active (due to the presampling phase).
Converter Timing Example A:
Assumptions:
Analog clock
Sample time
Conversion 10-bit:
Conversion 8-bit:
Converter Timing Example B:
Assumptions:
Analog clock
Sample time
Conversion 10-bit:
Conversion 8-bit:
Data Sheet
B
B
B
B
B
A/D Converter Computation Table
f
f
t
t
t
f
f
t
t
t
A/D Converter
Analog Clock
f
f
f
f
f
f
SYS
ADCI
S
C10
C8
SYS
ADCI
S
C10
C8
f
SYS
SYS
SYS
SYS
SYS
SYS
ADCI
/ 2
/ 3
/ (DIVA+1)
/ 63
/ 64
must not be exceeded when selecting the prescaler value.
= 80 MHz (i.e.
=
=
= 13 ×
= 11 ×
= 40 MHz (i.e.
=
=
= 16 ×
= 14 ×
f
t
f
t
SYS
ADCI
SYS
ADCI
/ 4 = 20 MHz, i.e.
/ 3 = 13.3 MHz, i.e.
× 2 = 100 ns
t
t
× 5 = 375 ns
t
t
ADCI
ADCI
ADCI
ADCI
f
ADCI
+ 2 ×
+ 2 ×
+ 2 ×
+ 2 ×
XC2361A, XC2363A, XC2364A, XC2365A
t
t
SYS
SYS
XC2000 Family Derivatives / Base Line
Table
88
t
t
t
t
SYS
SYS
SYS
SYS
INPCRx.7-0
(STC)
00
01
02
:
FE
FF
= 12.5 ns), DIVA = 03
= 25 ns), DIVA = 02
H
H
H
H
H
= 13 × 50 ns + 2 × 12.5 ns = 0.675 μs
= 11 × 50 ns + 2 × 12.5 ns = 0.575 μs
= 16 × 75 ns + 2 × 25 ns = 1.25 μs
= 14 × 75 ns + 2 × 25 ns = 1.10 μs
19.
t
ADCI
t
ADCI
= 50 ns
= 75 ns
Sample Time
t
t
t
t
t
t
t
S
ADCI
ADCI
ADCI
ADCI
ADCI
ADCI
Electrical Parameters
H
, STC = 03
H
, STC = 00
× 2
× 3
× 4
× (STC+2)
× 256
× 257
V2.0, 2009-03
H
1)
H