PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 193

• Manufacturer Part Number: PIC18F4431-E/PT
• Description: IC MCU FLASH 8KX16 44TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4431-E/PT

• Core Size: 8-Bit
• Program Memory Size: 16KB (8K x 16)
• Oscillator Type: Internal
• Core Processor: PIC
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 9x10b
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Controller Family/series: PIC18
• No. Of I/o's: 36
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 768Byte
• Cpu Speed: 40MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

FIGURE 17-7:
 2003 Microchip Technology Inc.
PTMR_INT_REQ
PTMR_INT_REQ
PRESCALER = 1:1
PRESCALER = 1:4
Note 1: Interrupt flag bit PTIF is sampled here (every Q1).
PTDIR bit
PTDIR bit
PTIF bit
PTIF bit
F
PTMR
PTMR
OSC
/4
Q1
Qc
1
1
Q2
Qc
002h
PWM TIME BASE INTERRUPTS, UP/DOWN COUNTING MODE
002h
Q3
Qc
Q4
Qc
Q1
Qc
1
1
Q2
Qc
001h
001h
PIC18F2331/2431/4331/4431
Q3
Qc
Preliminary
Q4
Qc
Q1
1
Qc
1
Q4
Q2
Qc
Q4
000h
000h
Q3
Qc
Q4
Qc
Q1
1
Qc
1
Q2
Qc
001h
001h
Q3
Qc
Q4
Qc
Q1
Qc
DS39616B-page 191
Q2
Qc
002h
002h
Q3
Qc
Q4
Qc