PIC16F1937-I/P Microchip Technology, PIC16F1937-I/P Datasheet - Page 109

• Manufacturer Part Number: PIC16F1937-I/P
• Description: IC PIC MCU FLASH 512KX14 40-PDIP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1937-I/P

• Program Memory Type: FLASH
• Program Memory Size: 14KB (8K x 14)
• Package / Case: 40-DIP (0.600", 15.24mm)
• 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
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: EUSART/MI2C/SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14-ch x 10-bit
• A/d Bit Size: 10 bit
• A/d Channels Available: 14
• Height: 4.95 mm
• Length: 53.21 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 14.73 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

8.0
8.1
The oscillator module has a wide variety of clock
sources and selection features that allow it to be used
in a wide range of applications while maximizing perfor-
mance and minimizing power consumption. Figure 8-1
illustrates a block diagram of the oscillator module.
Clock sources can be configured from external
oscillators, quartz crystal resonators, ceramic resonators
and Resistor-Capacitor (RC) circuits. In addition, the
system clock source can be configured from one of three
internal oscillators, with a choice of speeds selectable via
software. Additional clock features include:
• Selectable system clock source between external
• Two-Speed Start-up mode, which minimizes
• Fail-Safe Clock Monitor (FSCM) designed to
FIGURE 8-1:
© 2008 Microchip Technology Inc.
or internal via software.
latency between external oscillator start-up and
code execution.
detect a failure of the external clock source (LP,
XT, HS, EC or RC modes) and switch
automatically to the internal oscillator.
T1OSO
T1OSI
OSC2
OSC1
OSCILLATOR MODULE (WITH
FAIL-SAFE CLOCK MONITOR)
Overview
Oscillator
Oscillator
External
SIMPLIFIED PIC
Oscillator
Internal
500 kHz
16 MHz
Source
31 kHz
Source
Source
Block
Timer1
T1OSCEN
Enable
Oscillator
Sleep
31 kHz (LFINTOSC)
(HFINTOSC)
(MFINTOSC)
16 MHz
500 kHz
®
MCU CLOCK SOURCE BLOCK DIAGRAM
Preliminary
31.25 kHz
FOSC<2:0> = 100
62.5 kHz
125 kHz
500 kHz
250 kHz
16 MHz
8 MHz
4 MHz
2 MHz
1 MHz
31 kHz
IRCF<3:0>
The oscillator module can be configured in one of six
clock modes.
1.
2.
3.
4.
5.
6.
Clock Source modes are configured by the FOSC<2:0>
bits in the Configuration Word Register 1 (CONFIG1).
The internal clock can be generated from two internal
oscillators.
high-frequency oscillator. The MFINTOSC is a
calibrated
LFINTOSC is an uncalibrated low-frequency oscillator.
PIC16F193X/LF193X
EC – External clock.
LP – 32 kHz Low-Power Crystal mode.
XT – Medium Gain Crystal or Ceramic Resonator
Oscillator mode.
HS – High Gain Crystal or Ceramic Resonator
mode.
RC – External Resistor-Capacitor (RC).
INTOSC – Internal oscillator.
4 x PLL
LP, XT, HS, RC, EC
Two-Speed Start-up and other modules
Internal Oscillator
The
medium-frequency
WDT, PWRT, Fail-Safe Clock Monitor
HFINTOSC
FOSC<2:0>
T1OSC
Clock Source Option
for other modules
Control
Clock
SCS<1:0>
Sleep
is
DS41364A-page 107
oscillator.
a
Peripherals
CPU and
calibrated
The