PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 148
PIC18F4431-E/PT
Manufacturer Part Number
PIC18F4431-E/PT
Description
IC MCU FLASH 8KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC18F2331-ISO.pdf
(392 pages)
4.PIC18F2331-ISO.pdf
(8 pages)
5.PIC18F2331-ISO.pdf
(6 pages)
6.PIC18F2331-ISO.pdf
(16 pages)
7.PIC18LF2331-ISO.pdf
(40 pages)
8.PIC18F4431-EPT.pdf
(396 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
JOHANSON
Quantity:
24 000
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F818-ISO PDF datasheet #2
- PIC18F2331-ISO PDF datasheet #3
- PIC18F2331-ISO PDF datasheet #4
- PIC18F2331-ISO PDF datasheet #5
- PIC18F2331-ISO PDF datasheet #6
- PIC18LF2331-ISO PDF datasheet #7
- PIC18F4431-EPT PDF datasheet #8
- Current page: 148 of 396
- Download datasheet (8Mb)
PIC18F2331/2431/4331/4431
FIGURE 14-1:
14.1
Timer5 combines two 8-bit registers to function as a 16-
bit timer. The TMR5L register is the actual low byte of
the timer; it can be read and written to directly. The high
byte is contained in an unmapped register; it is read
and written to through TMR5H, which serves as a
buffer. Each register increments from 00h to FFh.
A second register pair, PR5H and PR5L, serves as a
period register; it sets the maximum count for the
TMR5 register pair. When TMR5 reaches the value of
PR5, the timer rolls over to 00h and sets the TMR5IF
interrupt flag. A simplified block diagram of the Timer5
module is shown in Figure 2-1.
DS39616B-page 146
Note:
T5CKI
T5PS1:T5PS0
T5SYNC
TMR5ON
Special Event
Trigger Input
from IC1
Timer5 Reset
(external)
Set TMR5IF
Special Event
Trigger Output
TMR5CS
Timer5 Operation
The TIMER5 may be used as a general
purpose timer and as the time base
resource to the Motion Feedback module
(Input Capture or Quadrature Encoder
Interface).
TIMER5 BLOCK DIAGRAM (16-BIT READ/WRITE MODE SHOWN)
Noise
Filter
1
0
Internal
Clock
F
OSC
/4
Reset
Special
Logic
1
0
Event
Logic
Timer5 Reset
Prescaler
1, 2, 4, 8
Preliminary
2
TMR5
PR5
TMR5L
PR5L
Timer5 supports three configurations:
• 16-bit Synchronous Timer
• 16-bit Synchronous Counter
• 16-bit Asynchronous Counter
In Synchronous Timer configuration, the timer is
clocked by the internal device clock. The optional
Timer5 prescaler divides the input by 2, 4, 8, or not at
all (1:1). The TMR5 register pair increments on Q1.
Clearing TMR5CS (= 0) selects the internal device
clock as the timer sampling clock.
In Synchronous Counter configuration, the timer is
clocked by the external clock (T5CKI) with the optional
prescaler. The external T5CKI is selected by setting the
TMR5CS bit (TMR5CS = 1); the internal clock is
selected by clearing TMR5CS. The external clock is
synchronized to the internal clock by clearing the
T5SYNC bit. The input on T5CKI is sampled on every
Q2 and Q4 of the internal clock. The low to rise
transition is decoded on three adjacent samples and
Sleep Input
Synchronize
Comparator
detect
16
16
High Byte
TMR5H
PR5H
TMR5
8
1
0
8
2003 Microchip Technology Inc.
Write TMR5L
Read TMR5L
8
8
8
8
Timer5
On/Off
Internal Data Bus
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