PIC16LF720_11 Datasheet, PDF (204/244 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC16(L)F720/721
TABLE 23-8: PIC16F720/721 A/D CONVERSION REQUIREMENTS
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C  TA  +125°C
Param
No.
Sym.
Characteristic
Min.
Typ†
Max. Units
Conditions
AD130* TAD A/D Clock Period
1.0
—
9.0
S VDD  2.0V⁽²⁾
4.0
—
16.0 S VDD  2.0V⁽²⁾
A/D Internal RC Oscillator
Period
(ADRC mode)
1.0
2.0
6.0 S
AD131 TCNV Conversion Time (not including —
Acquisition Time)⁽¹⁾
10.5
— TAD Set GO/DONE bit to new data in A/D
Result register
AD132* TACQ Acquisition Time
2
—
S VDD = 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 TCY cycle.
2: Setting of 16.0 s TAD not recommended for temperature > 85°C.
3: If ADRC mode is selected for use with VDD 2.0V, longer acquisition times will be required (see Section 9.3 “A/D Acqui-
sition Requirements”)
FIGURE 23-11: PIC16F720/721 A/D CONVERSION TIMING (NORMAL MODE)
BSF ADCON0, GO
AD134
Q4
A/D CLK
(TOSC/2⁽¹⁾)
AD131
AD130
1 TCY
A/D Data
7
6
5
4
3
2
1
0
ADRES
ADIF
GO
Sample ^AD132
OLD_DATA
Sampling Stopped
NEW_DATA
1 TCY
DONE
Note 1: If the A/D clock source is selected as RC, a time of TCY is added before the A/D clock starts. This allows the
SLEEP instruction to be executed.
DS41430B-page 204
Preliminary
 2011 Microchip Technology Inc.