參數(shù)資料
型號(hào): PIC16LC7X-04PTL16
廠商: Microchip Technology Inc.
英文描述: 8-Bit CMOS Microcontrollers with A/D Converter
中文描述: 8位CMOS微控制器與A / D轉(zhuǎn)換器
文件頁(yè)數(shù): 26/41頁(yè)
文件大?。?/td> 322K
代理商: PIC16LC7X-04PTL16
PIC16LC74B-16/PTL16
DS30026A-page 26
Preliminary
1999 Microchip Technology Inc.
FIGURE 2-18: A/D CONVERSION TIMING
TABLE 2-17:
A/D CONVERSION REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
130
T
AD
A/D clock period
2.0
3.0
11
6.0
16
9.0
11
μ
s
μ
s
T
AD
μ
s
T
OSC
based, V
REF
full range
A/D RC Mode
131
T
CNV
Conversion time (not including S/H time)
(Note 1)
Note 2
V
DD
= 3.0V, Temp. = 100°C,
Rs = 10K
The minimum time is the amplifier
settling time. This may be used if
the "new" input voltage has not
changed by more than 1 LSb (i.e.,
20.0 mV @ 5.12V) from the last
sampled voltage (as stated on
C
HOLD
).
If the A/D clock source is selected
as RC, a time of T
CY
is added
before the A/D clock starts. This
allows the
SLEEP
instruction to be
executed.
132
T
ACQ
Acquisition time
5*
μ
s
134
T
GO
Q4 to A/D clock start
T
OSC
/2
135
T
SWC
* These parameters are characterized but not tested.
Data in “Typ” column is at 5V, 25
°
C unless otherwise stated. These parameters are for design guidance only and are not
tested.
ADRES register may be read on the following T
CY
cycle.
See A/D section for minimum requirements.
Switching from convert
sample time
1.5 §
T
AD
Note 1:
2:
131
130
132
BSF ADCON0, GO
134
Q4
A/D CLK
A/D DATA
ADRES
ADIF
GO
SAMPLE
OLD_DATA
SAMPLING STOPPED
DONE
NEW_DATA
(T
OSC
/2) (1)
7
6
5
4
3
2
1
0
Note1:
If the A/D clock source is selected as RC, a time of T
CY
is added before the A/D clock starts. This
allows the
SLEEP
instruction to be executed.
1 T
CY
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