PIC16F1937T-I/MV Microchip Technology, PIC16F1937T-I/MV Datasheet - Page 337
![14KB Flash, 512B RAM, 256B EEPROM, LCD, 1.8-5.5V 40 UQFN 5x5x0.5mm T/R](/photos/16/12/161286/qfn44_sml.jpg)
PIC16F1937T-I/MV
Manufacturer Part Number
PIC16F1937T-I/MV
Description
14KB Flash, 512B RAM, 256B EEPROM, LCD, 1.8-5.5V 40 UQFN 5x5x0.5mm T/R
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16F1937-EMV.pdf
(472 pages)
Specifications of PIC16F1937T-I/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
+ 85 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 ~ 85°C
Lead Free Status / Rohs Status
Details
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27.4.3
As an LCD segment is electrically only a capacitor, cur-
rent is drawn only during the interval where the voltage
is switching. To minimize total device current, the LCD
internal reference ladder can be operated in a different
power mode for the transition portion of the duration.
This
(Register
FIGURE 27-4:
2008-2011 Microchip Technology Inc.
Segment Clock
Segment Data
Ladder Power
32 kHz Clock
LRLAT<2:0>
Power Mode
COM0-SEG0
is
Control
27-7).
AUTOMATIC POWER MODE
SWITCHING
COM0
controlled
SEG0
LCD INTERNAL REFERENCE LADDER POWER MODE SWITCHING DIAGRAM –
TYPE A
‘H00
by
Power Mode A
LRLAT<2:0>
the
‘H01
LCDRL
‘H02
‘H03
register
Single Segment Time
‘H04
‘H05
The LCDRL register allows switching between two
power modes, designated ‘A’ and ‘B’. ‘A’ Power mode
is active for a programmable time, beginning at the
time when the LCD segments transition. ‘B’ Power
mode is the remaining time before the segments or
commons change again. The LRLAT<2:0> bits select
how long, if any, that the ‘A’ Power mode is active.
Refer to
To implement this, the 5-bit prescaler used to divide
the 32 kHz clock down to the LCD controller’s 1 kHz
base rate is used to select the power mode.
‘H3
Power Mode B
‘H06
PIC16(L)F1934/6/7
Figure
‘H07
27-4.
‘H0E
‘H0F
DS41364E-page 337
-V
V
V
V
V
V
V
‘H00
1
0
1
0
1
0
1
Mode A
‘H01
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