PIC16F1937-E/MV Microchip Technology, PIC16F1937-E/MV Datasheet - Page 335

• Manufacturer Part Number: PIC16F1937-E/MV
• Description: 14KB Flash, 512B RAM, 256B EEPROM, LCD, 1.8-5.5V 40 UQFN 5x5x0.5mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1937-E/MV

• Processor Series: PIC16F
• Core: PIC
• Program Memory Type: Flash
• Program Memory Size: 14 KB
• Data Ram Size: 256 B
• Interface Type: MI2C, SPI, EUSART
• Number Of Timers: 5
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: UQFN-40
• Development Tools By Supplier: MPLAB IDE Software
• Minimum Operating Temperature: - 40 C
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 32MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 36
• Eeprom Size: 256 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Lead Free Status / Rohs Status: Details

27.3
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 27-3:
 2008-2011 Microchip Technology Inc.
V
2/3 V
VLCD3
VLCD2
VLCD1
LCD
)
LCD
1.024V from
FVR
LCD Bias Voltage Generation
and V
VLCD3PE
VLCD2PE
LCD
VLCD1PE
)
x 3
LCD BIAS VOLTAGE GENERATION BLOCK DIAGRAM
V
DD
SS
SS
3.072V
SS
, 1/2 V
, 1/3 V
and V
LCD
LCD
LCD
,
and
)
LCDCST<2:0>
TABLE 27-2:
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. Both of these features may be
used in conjunction with the external VLCD<3:1> pins, to
provide maximum flexibility. Refer to
LCD Bias 0
LCD Bias 1
LCD Bias 2
LCD Bias 3
PIC16(L)F1934/6/7
LCDIRE
LCDA
LCDIRS
LCDA
LCDIRE
LCDIRS
Static Bias
V
LCD BIAS VOLTAGES
V
LCD
—
—
SS
3
LCDA
BIASMD
1/2 Bias
1/2 V
1/2 V
V
V
LCD
SS
LCDRLP0
LCDRLP1
Figure
DD
DD
DS41364E-page 335
3
lcdbias3
lcdbias2
lcdbias0
lcdbias1
27-3.
1/3 Bias
1/3 V
2/3 V
V
V
LCD
SS
DD
DD
3