Information

PIC18F2221/2321/4221/4321
DS80310G-page 26 © 2008 Microchip Technology Inc.
13. Module: Peripheral Highlights
Under the “Peripheral Highlights” section on
page 1, Enhanced Addressable USART module,
the first bullet should be changed to:
- Supports RS-485, RS-232 and LIN/J2602
14. Module: A/D Converter Characteristics
Table 26-24: A/D Converter Characteristics, on
page 363, has been changed to update the offset
error. The table has been reprinted with the
updated values shown in bold text.
TABLE 26-24: A/D CONVERTER CHARACTERISTICS: PIC18F2221/2321/4221/4321 (INDUSTRIAL)
PIC18LF2221/2321/4221/4321 (INDUSTRIAL)
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
A01 N
R Resolution — — 10 bit ΔVREF ≥ 3.0V
A03 E
IL Integral Linearity Error — — <±1 LSb ΔVREF ≥ 3.0V
A04 EDL Differential Linearity Error — — <±1 LSb ΔVREF ≥ 3.0V
A06 EOFF Offset Error — — <±2 LSb ΔVREF ≥ 3.0V
A07 E
GN Gain Error — — <±1 LSb ΔVREF ≥ 3.0V
A10 — Monotonicity Guaranteed
(1)
—VSS ≤ VAIN ≤ VREF
A20 ΔVREF Reference Voltage Range
(V
REFH – VREFL)
1.8
3
—
—
—
—
V
V
V
DD < 3.0V
V
DD ≥ 3.0V
A21 VREFH Reference Voltage High — — VDD + 3.0V V
A22 VREFL Reference Voltage Low VSS – 0.3V — — V
A25 V
AIN Analog Input Voltage VREFL —VREFH V
A30 ZAIN Recommended Impedance of
Analog Voltage Source
——2.5kΩ
A50 I
REF VREF Input Current
(2)
—
—
—
—
5
150
μA
μA
During VAIN acquisition.
During A/D conversion
cycle.
Note 1: The A/D conversion result never decreases with an increase in the input voltage and has no missing codes.
2: V
REFH current is from RA3/AN3/VREF+ pin or VDD, whichever is selected as the VREFH source.
V
REFL current is from RA2/AN2/VREF-/CVREF pin or VSS, whichever is selected as the VREFL source.