
2001 Microchip Technology Inc.
Preliminary
DS39544A-page 145
PIC16C925/926
FIGURE 15-3:
LCD VOLTAGE WAVEFORM
TABLE 15-1:
LCD MODULE ELECTRICAL SPECIFICATIONS
TABLE 15-2:
VLCD CHARGE PUMP ELECTRICAL SPECIFICATIONS
VLCD3
VLCD2
VLCD1
VSS
D223
D224
Parameter
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
D200
VLCD3
LCD Voltage on pin
VLCD3
VDD - 0.3
—
Vss + 7.0
V
D201
VLCD2
LCD Voltage on pin
VLCD2
Vss - 0.3
—
VLCD3V
D202
VLCD1
LCD Voltage on pin
VLCD1
Vss - 0.3
—
VLCD3V
D220
VOH
Output High
Voltage
Max VLCDN - 0.1
—
Max VLCDN
V
COM outputs IOH = 25
A
SEG outputs IOH = 3
A
D221
VOL
Output Low Voltage
Min VLCDN
—
Min VLCDN + 0.1
V
COM outputs IOL = 25
A
SEG outputs IOL = 3
A
D222
FLCDRC
LCDRC Oscillator
Frequency
514
22
kHz
VDD = 5V, -40°C to +85°C
D223
TrLCD
Output Rise Time
——
200
s
COM outputs Cload = 5,000 pF
SEG outputs Cload = 500 pF
VDD = 5.0V, T = 25
°C
D224
TfLCD
Output Fall Time(1)
TrLCD - 0.05
TrLCD
—
TrLCD + 0.05
TrLCD
s
COM outputs Cload = 5,000 pF
SEG outputs Cload = 500 pF
VDD = 5.0V, T = 25
°C
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: 0 ohm source impedance at VLCD.
Parameter
No.
Symbol
Characteristic
Min
Typ
Max
Units
Conditions
D250
IVADJ
VLCDADJ Regulated Current Output
—
10
—
A
D252
IVADJ/ VDD VLCDADJ Current VDD Rejection
——
0.1
A/V
D265
VVADJ
VLCDADJ Voltage
Limits
PIC16C925/926
1.0
—
2.3
V
PIC16LC925/926
1.0
VDD - 0.7V
V
VDD < 3V
Note 1: For design guidance only.