Datasheet

MCP19111
DS22331A-page 32  2013 Microchip Technology Inc.
FIGURE 5-7: A/D CONVERSION TIMING (NORMAL MODE)
TABLE 5-7: MCP19111 A/D CONVERSION REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  T
A
 +125°C
Param
No.
Sym Characteristic Min Typ
†
Max Units Conditions
AD130* T
AD
A/D Clock Period 1.6 — 9.0 µs T
OSC
-based, V
REF
3.0V
3.0 — 9.0 µs T
OSC
-based, V
REF
full range
A/D Internal RC Oscillator
Period 3.0 6.0 9.0 µs
ADCS<1:0> = 11 (ADRC mode)
At V
DD
= 2.5V
1.6 4.0 6.0 µs At V
DD
= 5.0V
AD131 T
CNV
Conversion Time
(not including Acquisition
Time)
(1)
—11—T
AD
Set GO/DONE bit to new data in
A/D Result register
AD132* T
ACQ
Acquisition Time 11.5 — µs
AD133* T
AMP
Amplifier Settling Time — — 5 µs
AD134 T
GO
Q4 to A/D Clock Start —
—
T
OSC
/2
T
OSC
/
2+T
CY
—
—
—
— 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.
* These parameters are characterized but not tested.
† Data in ‘Typ’ column is at V
IN
=12V (V
DD
= 5V), +25°C unless otherwise stated. These parameters are for
design guidance only and are not tested.
Note 1: ADRESH and ADRESL registers may be read on the following T
CY
cycle.
131
130
132
BSF ADCON0, GO
Q4
A/D CLK
A/D DATA
ADRES
ADIF
GO
SAMPLE
OLD_DATA
SAMPLING STOPPED
DONE
NEW_DATA
987 3210
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.
1/2 T
CY
6
134