PIC18LF4550T-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4550T-I/SO

28/40/44-Pin, High-Performance, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F2455/2550/4455/4550

TABLE 28-29: A/D CONVERSION REQUIREMENTS

Param

No.

Symbol

Characteristic

Min Max Units

Conditions

130 TAD

A/D Clock Period

PIC18FXXXX

PIC18LFXXXX

0.8 25.0(1) μs TOSC based, VREF ≥ 3.0V

1.4 25.0(1) μs VDD = 2.0V,

TOSC based, VREF full range

PIC18FXXXX

—

1

μs A/D RC mode

PIC18LFXXXX

—

3

μs VDD = 2.0V,

A/D RC mode

131 TCNV Conversion Time

(not including acquisition time)(2)

132 TACQ Acquisition Time(3)

11

12

TAD

1.4

—

μs -40°C to +85°C

135 TSWC Switching Time from Convert → Sample

— (Note 4)

137 TDIS Discharge Time

0.2

—

μs

Note 1:

2:

3:

4:

The time of the A/D clock period is dependent on the device frequency and the TAD clock divider.

ADRES registers may be read on the following TCY cycle.

The time for the holding capacitor to acquire the “New” input voltage when the voltage changes full scale

after the conversion (VSS to VDD). The source impedance (RS) on the input channels is 50Ω.

On the following cycle of the device clock.

© 2009 Microchip Technology Inc.

DS39632E-page 405

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