PIC16LF1902T-I/SS Microchip Technology, PIC16LF1902T-I/SS Datasheet - Page 153
![3.5KB Flash, 128B RAM, LCD, 11x10b ADC, NanoWatt XLP 28 SSOP .209in T/R](/photos/16/9/160971/ssop-28_sml.jpg)
PIC16LF1902T-I/SS
Manufacturer Part Number
PIC16LF1902T-I/SS
Description
3.5KB Flash, 128B RAM, LCD, 11x10b ADC, NanoWatt XLP 28 SSOP .209in T/R
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF1902-EMV.pdf
(240 pages)
Specifications of PIC16LF1902T-I/SS
Processor Series
PIC16LF190x
Core
PIC
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
2 KB
Data Ram Size
128 B
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
25
Number Of Timers
2
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SSOP-28
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
-
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
25
Eeprom Size
-
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Lead Free Status / Rohs Status
Details
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18.3
The LCD module can be configured for one of three
bias types:
• Static Bias (2 voltage levels: V
• 1/2 Bias (3 voltage levels: V
• 1/3 Bias (4 voltage levels: V
FIGURE 18-3:
2011 Microchip Technology Inc.
V
2/3 V
VLCD3
VLCD2
VLCD1
LCD
)
LCD
LCD Bias Voltage Generation
and V
VLCD3PE
VLCD2PE
LCD
VLCD1PE
)
LCD BIAS VOLTAGE GENERATION BLOCK DIAGRAM
V
DD
SS
SS
SS
, 1/2 V
, 1/3 V
and V
LCD
LCD
LCD
,
and
)
Preliminary
LCDCST<2:0>
TABLE 18-2:
So that the user is not forced to place external compo-
nents and use up to three pins for bias voltage generation,
internal contrast control and an internal reference ladder
are provided internally to the PIC16LF1902/3. Both of
these features may be used in conjunction with the exter-
nal VLCD<3:1> pins, to provide maximum flexibility. Refer
to
LCD Bias 0
LCD Bias 1
LCD Bias 2
LCD Bias 3
Figure
LCDA
LCDIRE
18-3.
PIC16LF1902/3
Static Bias
V
LCD BIAS VOLTAGES
V
LCD
—
—
SS
Power Mode Switching
3
(LRLAP or LRLBP)
LCDA
BIASMD
2
A
B
1/2 Bias
1/2 V
1/2 V
V
V
LCD
SS
2
2
DD
DD
DS41455B-page 153
3
lcdbias3
lcdbias2
lcdbias0
lcdbias1
1/3 Bias
1/3 V
2/3 V
V
V
LCD
SS
DD
DD
3
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