PIC16F1938-I/ML Microchip Technology, PIC16F1938-I/ML Datasheet - Page 66

• Manufacturer Part Number: PIC16F1938-I/ML
• Description: IC MCU 8BIT FLASH 28QFN
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 16Fr

Specifications of PIC16F1938-I/ML

• Core Size: 8-Bit
• Program Memory Size: 28KB (16K x 14)
• Oscillator Type: Internal
• 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
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Controller Family/series: PIC16F
• No. Of I/o's: 25
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 1024Byte
• Cpu Speed: 32MHz
• Package: 28QFN EP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 32 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 25
• Interface Type: I2C/SPI/USART
• On-chip Adc: 11-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16F193X/LF193X
3.5.1
The BOR circuit has an output that feeds into the POR
circuit and rearms the POR within the operating range
of the BOR. This early rearming of the POR ensures
that the device will remain in Reset in the event that
V
circuitry.
3.6
A RESET instruction will cause a device Reset. The RI
bit in the PCON register will be set to ‘0’. See Table 3-6
for default conditions after a RESET instruction has
occurred.
3.7
Device Resets on Stack Overflow and Stack Underflow
conditions are enabled by setting the STVREN bit in
Configuration Word 2. When STVREN is set, an overflow
or underflow condition will set the appropriate STKOVF
or STKUNF bit in the PCON register and then cause a
device Reset. When STVREN is cleared, an overflow or
underflow condition will set the appropriate STKOVF or
STKUNF bit, but not cause a device Reset. The STKOVF
or STKUNF bit is cleared by user software or a Power-on
Reset.
3.8
On power-up, the time-out sequence is as follows: first,
PWRT time-out is invoked after POR or BOR has
expired, then OST is activated after the PWRT time-out
has expired. The total time-out will vary based on oscil-
lator configuration and PWRTE bit status. For example,
in EC mode with PWRTE bit = 1 (PWRT disabled),
there will be no time out at all. Figure 3-5, Figure 3-6
and Figure 3-7 depict time-out sequences.
Since the time outs occur from the POR pulse, if MCLR
is kept low long enough, the time-outs will expire. Then,
bringing MCLR high will begin execution immediately
(see Figure 3-6). This is useful for testing purposes or
to synchronize more than one PIC16F193X/LF193X
device operating in parallel.
Table 3-7 shows the Reset conditions for some special
registers.
DS41364C-page 66
DD
falls below the operating range of the BOR
Reset Instruction
Stack Overflow/Underflow
Power-Up Time-out Sequence
BOR HIBERNATE/REARM
Preliminary
© 2009 Microchip Technology Inc.