PIC16F1933-I/SO Microchip Technology, PIC16F1933-I/SO Datasheet - Page 6

• Manufacturer Part Number: PIC16F1933-I/SO
• Description: IC MCU 8BIT FLASH 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1933-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 7KB (4K x 14)
• Package / Case: 28-SOIC (7.5mm Width)
• 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: 25
• Eeprom Size: 256 x 8
• Ram Size: 256 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
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: EUSART, MI2C, SPI
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 25
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 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: 10 bit, 11 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F/LF1933
6. Module: Resets
6.1 Reset under Low-Power Conditions
DS80490F-page 6
• Enabling the Brown-out Reset (BOR) circuitry.
• Enabling the Fixed Voltage Reference (FVR)
• Maintaining a source voltage (V
This issue pertains to the PIC16F1933 product
only. The PIC16LF1933 product is not affected by
this issue in any way.
When employing any one of the low-power
oscillators, (ECL mode, LP Mode, LFINTOSC, or
Timer1 Oscillator) while, at the same time, the
source voltage supplied to the V
below 2.7 volts, the device will experience a
Power-on Reset (POR).
Also, when the source voltage supplied to the V
pin is below 2.7 volts and a SLEEP instruction is
executed, the device will experience a Power-on
Reset
regardless of the type of clock source being used
or
employed.
Work around
There are three separate work-arounds available
to avoid this Reset condition. Employing any one
of these work-arounds will avoid this Reset
condition.
The ‘Affected Silicon Revisions’ below refers
only to PIC16F1933.
Affected Silicon Revisions
A1
module.
device above 2.7 volts.
X
which
A2
(POR)
X
power-managed
A3
upon
A4
entering
mode
DD
Sleep
DD
) to the
pin drops
is
mode,
being
DD
7. Module: ADC
7.1 Analog-to-Digital Conversion
1.
2.
An ADC conversion may not complete under these
conditions:
When F
clock source used for the ADC converter.
The ADC is operating from its dedicated internal
FRC oscillator and the device is not in Sleep
mode (any F
When this occurs, the ADC Interrupt Flag (ADIF)
does not get set, the GO/DONE bit does not get
cleared, and the conversion result does not get
loaded into the ADRESH and ADRESL result
registers.
Work around
Method 1: Select the system clock, F
Method 2: Select
Method 3: This method is provided if the
OSC
is greater than 8 MHz and it is the
OSC
the ADC clock source and reduce
the F
less
conversions.
oscillator as the ADC conversion
clock source and perform all
conversions with the device in
Sleep.
application cannot use Sleep
mode and requires continuous
operation at frequencies above 8
MHz. This method requires early
termination
conversion. Provide a fixed time
delay in software to stop the A-to-
D conversion manually, after all
10 bits are converted, but before
the conversion would complete
automatically. The conversion is
stopped by clearing the GO/
DONE bit in software. The GO/
DONE bit must be cleared during
the last ½ T
conversion
completed automatically. Refer to
Figure 1
frequency).
 2010 Microchip Technology Inc.
OSC
when
for details.
the
frequency to 8 MHz or
AD
performing
of
dedicated
cycle, before the
would
an
OSC
have
ADC
ADC
FRC
, as