PIC16F1939-I/PT Microchip Technology Inc., PIC16F1939-I/PT Datasheet - Page 85

• Manufacturer Part Number: PIC16F1939-I/PT
• Description: 44 TQFP 10x10x1mm TRAY, 28KB Flash, 1KB RAM, 256B EEPROM, LCD, 1.8-5.5V
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F1939-I/PT

• A/d Inputs: 14-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 8 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 36
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 40-pin TQFP
• Programmable Memory: 28K Bytes
• Ram Size: 1K Bytes
• Speed: 32 MHz
• Temperature Range: –40 to 125 °C
• Timers: 4-8-bit, 1-16-bit
• Voltage, Range: 1.8-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

6.0
There are multiple ways to reset this device:
• Power-on Reset (POR)
• Brown-out Reset (BOR)
• MCLR Reset
• WDT Reset
• RESET instruction
• Stack Overflow
• Stack Underflow
• Programming mode exit
To allow V
can be enabled to extend the Reset time after a BOR
or POR event.
A simplified block diagram of the On-Chip Reset Circuit
is shown in Figure 6-1.
FIGURE 6-1:
 2009 Microchip Technology Inc.
MCLR
V
DD
Programming Mode Exit
RESET Instruction
RESETS
DD
Pointer
Stack
to stabilize, an optional power-up timer
Brown-out
Power-on
Time-out
Sleep
Reset
Reset
WDT
Stack Overflow/Underflow Reset
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
External Reset
MCLRE
Enable
BOR
LFINTOSC
Preliminary
Zero
PIC16F193X/LF193X
PWRTEN
PWRT
64 ms
DS41364D-page 85
Device
Reset