sak-xc161cj-16f40f Infineon Technologies Corporation, sak-xc161cj-16f40f Datasheet - Page 67

• Manufacturer Part Number: sak-xc161cj-16f40f
• Description: 16-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

Sample time and conversion time of the XC161’s A/D Converter are programmable. In
compatibility mode, the above timing can be calculated using
The limit values for
Table 15
ADCON.15|14
(ADCTC)
00
01
10
11
1) These selections are available in compatibility mode. An improved mechanism to control the ADC input clock
Converter Timing Example:
Assumptions:
Basic clock
Sample time
Conversion 10-bit:
With post-calibr.
Post-calibr. off
Conversion 8-bit:
With post-calibr.
Post-calibr. off
Data Sheet
can be selected.
A/D Converter Computation Table
f
f
t
t
t
t
t
A/D Converter
Basic Clock
f
f
f
f
SYS
BC
S
C10P
C10
C8P
C8
f
SYS
SYS
SYS
SYS
BC
must not be exceeded when selecting ADCTC.
/ 4
/ 2
/ 16
/ 8
= 40 MHz (i.e.
=
=
= 52 ×
= 40 ×
= 44 ×
= 32 ×
f
t
SYS
BC
× 8 = 400 ns
/ 2 = 20 MHz, i.e.
t
t
t
t
f
BC
BC
BC
BC
BC
+
+
+
+
t
t
t
t
S
S
S
S
t
+ 6 ×
+ 6 ×
+ 6 ×
+ 6 ×
SYS
65
ADCON.13|12
(ADSTC)
00
01
10
11
= 25 ns), ADCTC = ‘01’, ADSTC = ‘00’
t
t
t
t
SYS
SYS
SYS
SYS
t
BC
= (2600 + 400 + 150) ns = 3.15 µs
= (2000 + 400 + 150) ns = 2.55 µs
= (2200 + 400 + 150) ns = 2.75 µs
= (1600 + 400 + 150) ns = 2.15 µs
1)
= 50 ns
Table
Sample Time
t
t
t
t
t
S
BC
BC
BC
BC
Electrical Parameters
× 8
× 16
× 32
× 64
15.
XC161CJ-16F
Derivatives
V2.4, 2006-08