PIC16F72-04I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F72-04I/ML

28-Pin, 8-Bit CMOS FLASH Microcontoller with A/D Converter

Microchip Technology 

PIC16F72

FIGURE 14-16: A/D CONVERSION TIMING

BSF ADCON0, GO

134

(TOSC/2)(1)

131

Q4

130

A/D CLK 132

1 TCY

A/D DATA

7

6

5

4

3

2

1

0

ADRES

OLD_DATA

NEW_DATA

ADIF

GO

DONE

SAMPLE

SAMPLING STOPPED

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.

TABLE 14-10: A/D CONVERSION REQUIREMENTS

Param

No.

Sym

Characteristic

Min Typ† Max Units

Conditions

130 TAD A/D Clock Period

PIC16F72

1.6 — — μs TOSC based, VREF ≥ 3.0V

PIC16LF72

2.0 — — μs TOSC based,

2.0V ≤ VREF ≤ 5.5V

PIC16F72

2.0 4.0 6.0 μs A/D RC mode

PIC16LF72 3.0 6.0 9.0 μs A/D RC mode

131 TCNV Conversion Time (not including S/H time)

(Note 1)

9

—

9 TAD

132 TACQ Acquisition Time

5* — — μs 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 CHOLD).

134 TGO Q4 to A/D Clock Start

— TOSC/2 —

— 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.

* 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 TCY cycle.

© 2007 Microchip Technology Inc.

DS39597C-page 105

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