Datasheet

 2010-2013 Microchip Technology Inc. DS40001430E-page 203
PIC16(L)F720/721
FIGURE 23-11: PIC16F720/721 A/D CONVERSION TIMING (NORMAL MODE)
TABLE 23-8: PIC16F720/721 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 1.0 — 9.0 SVDD  2.0V
(2)
4.0 — 16.0 SVDD  2.0V
(2)
A/D Internal RC Oscillator
Period 1.0 2.0 6.0 S
(ADRC mode)
AD131 T
CNV Conversion Time (not including
Acquisition Time)
(1)
— 10.5 — TAD Set GO/DONE bit to new data in A/D
Result register
AD132* T
ACQ Acquisition Time 2 — SVDD = 3.0V, EC or INTOSC Clock
mode
(3)
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are
not tested.
Note 1: The ADRES register may be read on the following T
CY cycle.
2: Setting of 16.0 s T
AD not recommended for temperature > 85°C.
3: If ADRC mode is selected for use with V
DD 2.0V, longer acquisition times will be required (see Section 9.3 “A/D
Acquisition Requirements”)
AD131
AD130
BSF ADCON0, GO
Q4
A/D CLK
A/D Data
ADRES
ADIF
GO
Sample
OLD_DATA
Sampling Stopped
DONE
NEW_DATA
765 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 TCY
4
AD134
(TOSC/2
(1)
)
1 TCY
AD132