PIC18LF4331-I/P Microchip Technology, PIC18LF4331-I/P Datasheet - Page 151
![IC PIC MCU FLASH 4KX16 40DIP](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC18LF4331-I/P
Manufacturer Part Number
PIC18LF4331-I/P
Description
IC PIC MCU FLASH 4KX16 40DIP
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
(4 pages)
8.PIC18LF2331-ISO.pdf
(40 pages)
9.PIC18F4331-EP.pdf
(400 pages)
Specifications of PIC18LF4331-I/P
Core Size
8-Bit
Program Memory Size
8KB (4K x 16)
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)
2 V ~ 5.5 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Controller Family/series
PIC18
No. Of I/o's
36
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
No. Of Timers
4
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC18LF4331-I/P
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
PIC18LF4331-I/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
- PIC18LF2331-ISO PDF datasheet #8
- PIC18F4331-EP PDF datasheet #9
- Current page: 151 of 400
- Download datasheet (7Mb)
In Synchronous Counter mode 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
the Timer5 is incremented on the next Q1. The T5CKI
minimum pulse-width high and low time must be
greater than T
In Asynchronous Counter mode configuration, Timer5
is clocked by the external clock (T5CKI) with the
optional prescaler. In this mode, T5CKI is not synchro-
nized to the internal clock. By setting TMR5CS, the
external input clock (T5CKI) can be used as the
counter sampling clock. When T5SYNC is set, the
external clock is not synchronized to the internal device
clock.
The timer count is not reset automatically when the
module is disabled. The user may write the Counter
register to initialize the counter.
14.1.1
Timer5 has two operating modes: Continuous Count
and Single-Shot.
Continuous Count mode is selected by clearing the
T5MOD control bit (= 0). In this mode, the Timer5 time
base will start incrementing according to the prescaler
settings until a TMR5/PR5 match occurs, or until TMR5
rolls over (FFFFh to 0000h). The TMR5IF interrupt flag
is set, the TMR5 register is reset on the following input
clock edge and the timer continues to count for as long
as the TMR5ON bit remains set.
Single-Shot mode is selected by setting T5MOD (= 1).
In this mode, the Timer5 time base begins to increment
according to the prescaler settings until a TMR5/PR5
match occurs. This causes the TMR5IF interrupt flag to
be set, the TMR5 register pair to be cleared on the
following input clock edge and the TMR5ON bit to be
cleared by the hardware to halt the timer.
The Timer5 time base can only start incrementing in
Single-Shot mode under two conditions:
1.
2.
© 2007 Microchip Technology Inc.
Note:
Timer5 is enabled (TMR5ON is set), or
Timer5 is disabled and a Special Event Trigger
Reset is present on the Timer5 Reset input. (See
Section 14.7 “Timer5 Special Event Trigger
Reset Input” for additional information).
The Timer5 module does NOT prevent
writes to the PR5 registers (PR5H:PR5L)
while the timer is enabled. Writing to PR5
while the timer is enabled may result in
unexpected period match events.
CONTINUOUS COUNT AND
SINGLE-SHOT OPERATION
CY
/2.
PIC18F2331/2431/4331/4431
Preliminary
14.2
As noted, the actual high byte of the Timer5 register
pair is mapped to TMR5H, which serves as a buffer.
Reading TMR5L will load the contents of the high byte
of the register pair into the TMR5H register. This allows
the user to accurately read all 16 bits of the register pair
without having to determine whether a read of the high
byte, followed by the low byte, is valid due to a rollover
between reads.
Since the actual high byte of the Timer5 register pair is
not directly readable or writable, it must be read and
written to through the Timer5 High Byte Buffer register
(TMR5H). The T5 high byte is updated with the con-
tents of TMR5H when a write occurs to TMR5L. This
allows a user to write all 16 bits to both the high and low
bytes of Timer5 at once. Writes to TMR5H do not clear
the Timer5 prescaler. The prescaler is only cleared on
writes to TMR5L.
14.2.1
Read-modify-write instructions, like BSF and BCF, will
read the contents of a register, make the appropriate
changes and place the result back into the register. The
write portion of a read-modify-write instruction of
TMR5H will not update the contents of the high byte of
TMR5 until a write of TMR5L takes place. Only then will
the contents of TMR5H be placed into the high byte of
TMR5.
14.3
The Timer5 clock input (either T
may be divided by using the Timer5 programmable
prescaler. The prescaler control bits, T5PS1:T5PS0
(T5CON<4:3>), select a prescale factor of 2, 4, 8 or no
prescale.
The Timer5 prescaler is cleared by any of the following:
• A write to the Timer5 register
• Disabling Timer5 (TMR5ON = 0)
• A device Reset such as Master Clear, POR or
BOR
Note:
16-Bit Read/Write and Write Modes
Timer5 Prescaler
16-BIT READ-MODIFY-WRITE
Writing to the T5CON register does not
clear the Timer5.
CY
or the external clock)
DS39616C-page 149
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