參數(shù)資料
型號(hào)： SAB-XC164SM-8F40F
廠商： INFINEON TECHNOLOGIES AG
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP64
封裝： PLASTIC, TQFP-64
文件頁數(shù)： 53/66頁
文件大?。?/td> 613K
代理商： SAB-XC164SM-8F40F
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
A/D Converter Computation Table
1)
1) These selections are available in compatibility mode. An improved mechanism to control the ADC input clock
can be selected.
ADCON.15|14
(ADCTC)
A/D Converter
Basic Clock
f
BC
ADCON.13|12
(ADSTC)
Sample Time
t
S
00
f
SYS / 4
00
t
BC × 8
01
f
SYS / 2
01
t
BC × 16
10
f
SYS / 16
10
t
BC × 32
11
f
SYS / 8
11
t
BC × 64
Assumptions:
f
SYS
= 40 MHz (i.e. t
SYS = 25 ns), ADCTC = ‘01’, ADSTC = ‘00’
Basic clock
f
BC
= f
SYS / 2 = 20 MHz, i.e. tBC = 50 ns
Sample time
t
S
= t
BC × 8 = 400 ns
Conversion 10-bit:
With post-calibr.
t
C10P
= 52
× t
BC + tS + 6 × tSYS = (2600 + 400 + 150) ns = 3.15 s
Post-calibr. off
t
C10
= 40
× t
BC + tS + 6 × tSYS = (2000 + 400 + 150) ns = 2.55 s
Conversion 8-bit:
With post-calibr.
t
C8P
= 44
× t
BC + tS + 6 × tSYS = (2200 + 400 + 150) ns = 2.75 s
Post-calibr. off
t
C8
= 32
× t
BC + tS + 6 × tSYS = (1600 + 400 + 150) ns = 2.15 s
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