PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 188

• 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

PIC18F2331/2431/4331/4431
REGISTER 17-1:
REGISTER 17-2:
DS39616B-page 186
bit 7
bit 6
bit 5-0
bit 7-4
bit 3-2
bit 1-0
bit 7
Legend:
R = Readable bit
-n = Value at POR
PTEN: PWM Time Base Timer Enable bit
1 = PWM time base is ON
0 = PWM time base is OFF
PTDIR: PWM Time Base Count Direction Status bit
1 = PWM time base counts down.
0 = PWM time base counts up.
Unimplemented: Read as ‘0’.
bit 7
PTOPS3:PTOPS0: PWM Time Base Output Postscale Select bits
0000 =1:1 Postscale
0001 =1:2 Postscale
.
.
.
1111 =1:16 Postscale
PTCKPS1:PTCKPS0: PWM Time Base Input Clock Prescale Select bits
00 =PWM time base input clock is Fosc/4
01 =PWM time base input clock is Fosc/16 (1:4 prescale)
10 =PWM time base input clock is Fosc/64 (1:16 prescale)
11 =PWM time base input clock is Fosc/256 (1:64 prescale)
PTMOD1:PTMOD0: PWM Time Base Mode Select bits
11 =PWM time base operates in a Continuous Up/Down mode with interrupts for double PWM
10 =PWM time base operates in a Continuous Up/Down Counting mode.
01 =PWM time base configured for Single-shot mode.
00 =PWM time base operates in a Free Running mode.
Legend:
R = Readable bit
-n = Value at POR
PTOPS3
PTCON0: PWM TIMER CONTROL REGISTER 0
PTCON1: PWM TIMER CONTROL REGISTER 1
R/W-0
PTEN
R/W-0
updates.
PTOPS2
PTDIR
R/W-0
R-0
PTOPS1
R/W-0
U-0
—
W = Writable bit
‘1’= bit is set
W = Writable bit
‘1’ = bit is set
Preliminary
PTOPS0
R/W-0
U-0
—
(1:1 prescale)
PTCKPS1 PTCKPS0 PTMOD1
U = Unimplemented bit, read as ‘0’
R/W-0
‘0’ = bit is cleared
U = Unimplemented bit, read as ‘0’
‘0’ = bit is cleared
U-0
—
R/W-0
U-0
—
 2003 Microchip Technology Inc.
x = bit is unknown
x = bit is unknown
R/W-0
U-0
—
PTMOD0
R/W-0
U-0
—
bit 0
bit 0