Datasheet

PIC18F2221/2321/4221/4321 FAMILY
DS39689F-page 336 © 2009 Microchip Technology Inc.
27.1 DC Characteristics: Supply Voltage
PIC18F2221/2321/4221/4321 (Industrial)
PIC18LF2221/2321/4221/4321 (Industrial)
PIC18LF2221/2321/4221/4321
(Industrial)
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for industrial
PIC18F2221/2321/4221/4321
(Industrial, Extended)
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ T
A ≤ +85°C for industrial
-40°C ≤ T
A ≤ +125°C for extended
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
D001 V
DD Supply Voltage
PIC18LF2X21/4X21 2.0 — 5.5 V
PIC18F2X21/4X21 4.2 — 5.5 V
D001C AVDD Analog Supply Voltage VDD – 0.3V — VDD + 0.3V V
D001D AV
SS Analog Ground Voltage VSS – 0.3V — VSS + 0.3V V
D002 V
DR RAM Data Retention
Voltage
(1)
1.5 — — V
D003 V
POR VDD Start Voltage
to Ensure Internal
Power-on Reset Signal
— — 0.7 V See section on Power-on Reset for
details
D004 S
VDD VDD Rise Rate
to Ensure Internal
Power-on Reset Signal
0.05 — — V/ms See section on Power-on Reset for
details
V
BOR Brown-out Reset Voltage
D005 PIC18LF2X21/4X21
BORV<1:0> = 11 2.00 2.11 2.22 V
BORV<1:0> = 10 2.65 2.79 2.93 V
D005 All devices
BORV<1:0> = 01
(2)
4.11 4.33 4.55 V
BORV<1:0> = 00 4.36 4.59 4.82 V
Legend: Shading of rows is to assist in readability of the table.
Note 1: This is the limit to which V
DD can be lowered in Sleep mode, or during a device Reset, without losing RAM data.
2: With BOR enabled, full-speed operation (F
OSC = 40 MHz) is supported until a BOR occurs. This is valid although
V
DD may be below the minimum voltage for this frequency.