PIC16C62B/72A
DS35008C-page 102
Preliminary
1998-2013 Microchip Technology Inc.
FIGURE 13-17: A/D CONVERSION TIMING
TABLE 13-14: A/D CONVERSION REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ†
Max
Unit
s
Conditions
130
T
AD
A/D clock period
PIC16CXX
1.6
—
—
s
T
OSC
based, V
REF
3.0V
PIC16LCXX
2.0
—
—
s
T
OSC
based, V
REF
full range
PIC16CXX
2.0
4.0
6.0
s
A/D RC Mode
PIC16LCXX
3.0
6.0
9.0
s
A/D RC Mode
131
T
CNV
Conversion time (not including S/H
time) (Note 1)
11
—
11
T
AD
132
T
ACQ
Acquisition time
Note 2
5*
20
—
—
—
s
s
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 sam-
pled voltage (as stated on
C
HOLD
).
134
T
GO
Q4 to A/D clock start
—
T
OSC
/2
—
—
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.
135
Tswc Switching from convert
sample
time
1.5 —
—
T
AD
* 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.
Note 1:
ADRES register may be read on the following T
CY
cycle.
2:
See Section 9.1 for min conditions.
131
130
132
BSF ADCON0, GO
Q4
A/D CLK
A/D DATA
ADRES
ADIF
GO
SAMPLE
OLD_DATA
SAMPLING STOPPED
DONE
NEW_DATA
(Tosc/2)
(1)
7
6
5
4
3
2
1
0
Note 1:
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
134
Summary of Contents for PIC16C62B/72A
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