參數(shù)資料
型號: SAF-XE164H-96F66L
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, MICROCONTROLLER, PQFP100
封裝: 0.50 MM PITCH, GREEN, PLASTIC, LQFP-100
文件頁數(shù): 98/113頁
文件大?。?/td> 1498K
代理商: SAF-XE164H-96F66L
XE164x
XE166 Family Derivatives
Electrical Parameters
Preliminary
Data Sheet
83
V2.0, 2008-03
Sample time and conversion time of the XE164’s A/D converters are programmable. The
timing above can be calculated using Table 18.
The limit values for
f
ADCI must not be exceeded when selecting the prescaler value.
Converter Timing Example A:
Converter Timing Example B:
Table 18
A/D Converter Computation Table
GLOBCTR.5-0
(DIVA)
A/D Converter
Analog Clock
f
ADCI
INPCRx.7-0
(STC)
Sample Time
t
S
000000B
f
SYS
00H
t
ADCI × 2
000001B
f
SYS / 2
01H
t
ADCI × 3
000010B
f
SYS / 3
02H
t
ADCI × 4
:
f
SYS / (DIVA+1)
:
t
ADCI × (STC+2)
111110B
f
SYS / 63
FEH
t
ADCI × 256
111111B
f
SYS / 64
FFH
t
ADCI × 257
Assumptions:
f
SYS
= 66 MHz (i.e.
t
SYS = 15.2 ns), DIVA = 03H, STC = 00H
Analog clock
f
ADCI
=
f
SYS / 4 = 16.5 MHz, i.e. tADCI = 60.6 ns
Sample time
t
S
=
t
ADCI × 2 = 121 ns
Conversion 10-bit:
t
C10
= 13
× t
ADCI + 2 × tSYS = 13 × 60.6 ns + 2 × 15.2 ns = 0.82 s
Conversion 8-bit:
t
C8
= 11
× t
ADCI + 2 × tSYS = 11 × 60.6 ns + 2 × 15.2 ns = 0.70 s
Assumptions:
f
SYS
= 40 MHz (i.e.
t
SYS = 25 ns), DIVA = 02H, STC = 03H
Analog clock
f
ADCI
=
f
SYS / 3 = 13.3 MHz, i.e. tADCI = 75 ns
Sample time
t
S
=
t
ADCI × 5 = 375 ns
Conversion 10-bit:
t
C10
= 16
× t
ADCI + 2 × tSYS = 16 × 75 ns + 2 × 25 ns = 1.25 s
Conversion 8-bit:
t
C8
= 14
× t
ADCI + 2 × tSYS = 14 × 75 ns + 2 × 25 ns = 1.10 s
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