PIC16F1937-E/MV Microchip Technology, PIC16F1937-E/MV Datasheet - Page 340

• 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

PIC16(L)F1934/6/7
REGISTER 27-7:
DS41364E-page 340
bit 7
Legend:
R = Readable bit
u = Bit is unchanged
‘1’ = Bit is set
bit 7-6
bit 5-4
bit 3
bit 2-0
R/W-0/0
LRLAP<1:0>
LRLAP<1:0>: LCD Reference Ladder A Time Power Control bits
During Time interval A (Refer to
00 = Internal LCD Reference Ladder is powered down and unconnected
01 = Internal LCD Reference Ladder is powered in Low-Power mode
10 = Internal LCD Reference Ladder is powered in Medium-Power mode
11 = Internal LCD Reference Ladder is powered in High-Power mode
LRLBP<1:0>: LCD Reference Ladder B Time Power Control bits
During Time interval B (Refer to
00 = Internal LCD Reference Ladder is powered down and unconnected
01 = Internal LCD Reference Ladder is powered in Low-Power mode
10 = Internal LCD Reference Ladder is powered in Medium-Power mode
11 = Internal LCD Reference Ladder is powered in High-Power mode
Unimplemented: Read as ‘0’
LRLAT<2:0>: LCD Reference Ladder A Time Interval Control bits
Sets the number of 32 kHz clocks that the A Time Interval Power mode is active
For type A waveforms (WFT = 0):
000 = Internal LCD Reference Ladder is always in ‘B’ Power mode
001 = Internal LCD Reference Ladder is in ‘A’ Power mode for 1 clock and ‘B’ Power mode for 15 clocks
010 = Internal LCD Reference Ladder is in ‘A’ Power mode for 2 clocks and ‘B’ Power mode for 14 clocks
011 = Internal LCD Reference Ladder is in ‘A’ Power mode for 3 clocks and ‘B’ Power mode for 13 clocks
100 = Internal LCD Reference Ladder is in ‘A’ Power mode for 4 clocks and ‘B’ Power mode for 12 clocks
101 = Internal LCD Reference Ladder is in ‘A’ Power mode for 5 clocks and ‘B’ Power mode for 11 clocks
110 = Internal LCD Reference Ladder is in ‘A’ Power mode for 6 clocks and ‘B’ Power mode for 10 clocks
111 = Internal LCD Reference Ladder is in ‘A’ Power mode for 7 clocks and ‘B’ Power mode for 9 clocks
For type B waveforms (WFT = 1):
000 = Internal LCD Reference Ladder is always in ‘B’ Power mode.
001 = Internal LCD Reference Ladder is in ‘A’ Power mode for 1 clock and ‘B’ Power mode for 31 clocks
010 = Internal LCD Reference Ladder is in ‘A’ Power mode for 2 clocks and ‘B’ Power mode for 30 clocks
011 = Internal LCD Reference Ladder is in ‘A’ Power mode for 3 clocks and ‘B’ Power mode for 29 clocks
100 = Internal LCD Reference Ladder is in ‘A’ Power mode for 4 clocks and ‘B’ Power mode for 28 clocks
101 = Internal LCD Reference Ladder is in ‘A’ Power mode for 5 clocks and ‘B’ Power mode for 27 clocks
110 = Internal LCD Reference Ladder is in ‘A’ Power mode for 6 clocks and ‘B’ Power mode for 26 clocks
111 = Internal LCD Reference Ladder is in ‘A’ Power mode for 7 clocks and ‘B’ Power mode for 25 clocks
R/W-0/0
LCDRL: LCD REFERENCE LADDER CONTROL REGISTERS
W = Writable bit
x = Bit is unknown
‘0’ = Bit is cleared
R/W-0/0
LRLBP<1:0>
Figure
Figure
R/W-0/0
27-4):
27-4):
U = Unimplemented bit, read as ‘0’
-n/n = Value at POR and BOR/Value at all other Resets
U-0
—
R/W-0/0
 2008-2011 Microchip Technology Inc.
LRLAT<2:0>
R/W-0/0
R/W-0/0
bit 0