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參數(shù)資料
| 型號： | XC164SM |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | 16-Bit Single-Chip Microcontroller with C166SV2 Core |
| 中文描述： | 16位單片機與C166SV2核心 |
| 文件頁數(shù)： | 57/66頁 |
| 文件大?。?/td> | 599K |
| 代理商： | XC164SM |
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XC164SM
Derivatives
Electrical Parameters
Data Sheet
55
V1.0, 2005-11
Sample time and conversion time of the XC164SM’s A/D Converter are programmable.
In compatibility mode, the above timing can be calculated using
Table 4-7
.
The limit values for
f
BC
must not be exceeded when selecting ADCTC.
Converter Timing Example:
Table 4-7
ADCON.15|14
(ADCTC)
00
01
10
11
A/D Converter Computation Table
1)
A/D Converter
Basic Clock
f
BC
f
SYS
/ 4
f
SYS
/ 2
f
SYS
/ 16
f
SYS
/ 8
1) These selections are available in compatibility mode. An improved mechanism to control the ADC input clock
can be selected.
ADCON.13|12
(ADSTC)
00
01
10
11
Sample Time
t
S
t
BC
×
8
t
BC
×
16
t
BC
×
32
t
BC
×
64
Assumptions:
Basic clock
Sample time
Conversion 10-bit:
With post-calibr.
Post-calibr. off
Conversion 8-bit:
With post-calibr.
Post-calibr. off
f
SYS
f
BC
t
S
= 40 MHz (i.e. t
SYS
= 25 ns), ADCTC = ‘01’, ADSTC = ‘00’
= f
SYS
/ 2 = 20 MHz, i.e.
t
BC
= 50 ns
= t
BC
×
8 = 400 ns
t
C10P
t
C10
= 52
×
t
BC
+
t
S
+ 6
×
t
SYS
= (2600 + 400 + 150) ns = 3.15
μ
s
= 40
×
t
BC
+
t
S
+ 6
×
t
SYS
= (2000 + 400 + 150) ns = 2.55
μ
s
t
C8P
t
C8
= 44
×
t
BC
+
t
S
+ 6
×
t
SYS
= (2200 + 400 + 150) ns = 2.75
μ
s
= 32
×
t
BC
+
t
S
+ 6
×
t
SYS
= (1600 + 400 + 150) ns = 2.15
μ
s
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