PIC18LF2439-I/SP Microchip Technology, PIC18LF2439-I/SP Datasheet - Page 106
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PIC18LF2439-I/SP
Manufacturer Part Number
PIC18LF2439-I/SP
Description
IC MCU FLASH 6KX16 EE A/D 28DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Specifications of PIC18LF2439-I/SP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
12KB (6K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
640 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
21
Number Of Timers
16 bit
Operating Supply Voltage
2 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
DV164005, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
5 bit
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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PIC18FXX39
11.1
Timer1 can operate in one of these modes:
• As a timer
• As a synchronous counter
• As an asynchronous counter
FIGURE 11-1:
FIGURE 11-2:
DS30485A-page 104
TMR1IF
Overflow
Interrupt
Flag bit
T13CKI
Timer1 Operation
Data Bus<7:0>
Write TMR1L
Read TMR1L
TMR1IF
Overflow
Interrupt
Flag bit
T13CKI
TIMER1 BLOCK DIAGRAM
TIMER1 BLOCK DIAGRAM: 16-BIT READ/WRITE MODE
8
High Byte
TMR1H
Timer 1
8
TMR1H
8
TMR1
TMR1
TMR1L
TMR1L
8
Clock
Internal
F
OSC
Clock
F
Internal
Preliminary
OSC
/4
/4
TMR1CS
TMR1ON
1
0
TMR1CS
On/Off
1
0
TMR1ON
on/off
The Operating mode is determined by the clock select
bit, TMR1CS (T1CON<1>). When TMR1CS = 0,
Timer1 increments every instruction cycle. When
TMR1CS = 1, Timer1 increments on every rising edge
of the external clock input.
T1CKPS1:T1CKPS0
Prescaler
1, 2, 4, 8
T1CKPS1:T1CKPS0
T1SYNC
T1SYNC
Prescaler
1, 2, 4, 8
2
0
1
1
0
2
2002 Microchip Technology Inc.
Synchronized
Clock Input
Synchronize
SLEEP Input
Synchronized
Clock Input
Synchronize
SLEEP Input
det
det
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