PIC16F1938-I/SO Microchip Technology, PIC16F1938-I/SO Datasheet - Page 334
PIC16F1938-I/SO
Manufacturer Part Number
PIC16F1938-I/SO
Description
IC MCU 8BIT FLASH 28SOIC
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16LF1933-ISS.pdf
(508 pages)
3.PIC16LF1933-ISS.pdf
(46 pages)
4.PIC16F1938-ISS.pdf
(10 pages)
Specifications of PIC16F1938-I/SO
Core Size
8-Bit
Program Memory Size
28KB (16K x 14)
Core Processor
PIC
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
25
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Controller Family/series
PIC16F
Eeprom Memory Size
256Byte
Ram Memory Size
1024Byte
Cpu Speed
32MHz
No. Of Timers
5
Interface
EUSART, I2C, SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16F1938-I/SO
Manufacturer:
MITSUMI
Quantity:
12 000
Part Number:
PIC16F1938-I/SO
Manufacturer:
MICROCHI
Quantity:
20 000
- PIC16F722-ISS PDF datasheet
- PIC16LF1933-ISS PDF datasheet #2
- PIC16LF1933-ISS PDF datasheet #3
- PIC16F1938-ISS PDF datasheet #4
- Current page: 334 of 508
- Download datasheet (5Mb)
PIC16F193X/LF193X
26.2
The LCD module has 3 possible clock sources:
• F
• T1OSC
• LFINTOSC
The first clock source is the system clock divided by
256 (F
about 1 kHz output when the system clock is 8 MHz.
The divider is not programmable. Instead, the LCD
prescaler bits LP<3:0> of the LCDPS register are used
to set the LCD frame clock rate.
The second clock source is the T1OSC. This also gives
about 1 kHz when a 32.768 kHz crystal is used with the
Timer1 oscillator. To use the Timer1 oscillator as a
clock source, the T1OSCEN bit of the T1CON register
should be set.
The third clock source is the 31 kHz LFINTOSC, which
provides approximately 1 kHz output.
The second and third clock sources may be used to
continue running the LCD while the processor is in
Sleep.
FIGURE 26-2:
DS41364D-page 334
OSC
Nominal = 31 kHz
T1OSC 32 kHz
F
OSC
Crystal Osc.
OSC
/256
LFINTOSC
LCD Clock Source Selection
/256). This divider ratio is chosen to provide
÷256
LCD CLOCK GENERATION
CS<1:0>
÷2
÷4
LMUX<1:0>
Preliminary
Static
1/2
1/3,
1/4
4-bit Prog
Using bits CS<1:0> of the LCDCON register can select
any of these clock sources.
26.2.1
A 4-bit counter is available as a prescaler for the LCD
clock. The prescaler is not directly readable or writable;
its value is set by the LP<3:0> bits of the LCDPS register,
which determine the prescaler assignment and prescale
ratio.
The prescale values are selectable from 1:1 through
1:16.
Prescaler
LP<3:0>
Power Control
LCD PRESCALER
To Ladder
Counter
÷ 32
2009 Microchip Technology Inc.
Segment
Clock
Ring Counter
÷1, 2, 3, 4
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