Datasheet

PIC18F2220/2320/4220/4320
DS39599G-page 322 © 2007 Microchip Technology Inc.
TABLE 26-2: COMPARATOR SPECIFICATIONS
TABLE 26-3: VOLTAGE REFERENCE SPECIFICATIONS
FIGURE 26-4: LOW-VOLTAGE DETECT CHARACTERISTICS
Operating Conditions: 3.0V < V
DD < 5.5V, -40°C < TA < +125°C, unless otherwise stated.
Param
No.
Sym Characteristics Min Typ Max Units Comments
D300 VIOFF Input Offset Voltage — ±5.0 ±10 mV
D301 V
ICM Input Common Mode Voltage* 0 — VDD – 1.5 V
D302 CMRR Common Mode Rejection Ratio* 55 — — dB
300
300A
T
RESP Response Time
(1)*
—150400
600
ns
ns
PIC18FXX20
PIC18LFXX20
301 T
MC2OV Comparator Mode Change to
Output Valid*
—— 10μs
* These parameters are characterized but not tested.
Note 1: Response time measured with one comparator input at (V
DD – 1.5)/2, while the other input transitions
from V
SS to VDD.
Operating Conditions: 3.0V < VDD < 5.5V, -40°C < TA < +125°C, unless otherwise stated.
Param
No.
Sym Characteristics Min Typ Max Units Comments
D310 V
RES Resolution VDD/24 — VDD/32 LSb
D311 VRAA Absolute Accuracy —
—
—
—
1/2
1/2
LSb
LSb
Low Range (VRR = 1)
High Range (VRR = 0)
D312 VR
UR Unit Resistor Value (R)* —2k— Ω
310 T
SET Settling Time
(1)*
— — 10 μs
* These parameters are characterized but not tested.
Note 1: Settling time measured while VRR = 1 and VR<3:0> transitions from ‘0000’ to ‘1111’.
VLVD
LVDIF
VDD
(LVDIF set by hardware)
(LVDIF can be
cleared in software)