PIC18F2450-I/ML Microchip Technology Inc., PIC18F2450-I/ML Datasheet - Page 118
PIC18F2450-I/ML
Manufacturer Part Number
PIC18F2450-I/ML
Description
Microcontroller; 16 KB Flash; 768 RAM; 0 EEPROM; 23 I/O; 28-Pin-QFN
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F2450-IML.pdf
(320 pages)
Specifications of PIC18F2450-I/ML
A/d Inputs
10-Channel, 10-Bit
Cpu Speed
12 MIPS
Eeprom Memory
0 Bytes
Input Output
23
Interface
EUSART/USB
Memory Type
Flash
Number Of Bits
8
Package Type
28-pin QFN
Programmable Memory
16K Bytes
Ram Size
768 Bytes
Speed
48 MHz
Timers
1-8-bit, 2-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F2450-I/ML
Manufacturer:
TOSHIBA
Quantity:
2 000
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- Download datasheet (6Mb)
PIC18F2450/4450
11.1
Timer1 can operate in one of these modes:
• Timer
• Synchronous Counter
• Asynchronous Counter
The operating mode is determined by the clock select
bit, TMR1CS (T1CON<1>). When TMR1CS is cleared
(= 0), Timer1 increments on every internal instruction
FIGURE 11-1:
FIGURE 11-2:
DS39760A-page 116
Note 1: When enable bit, T1OSCEN, is cleared, the inverter and feedback resistor are turned off to eliminate power drain.
Note 1: When enable bit, T1OSCEN, is cleared, the inverter and feedback resistor are turned off to eliminate power drain.
T1OSO/T1CKI
T1OSO/T1CKI
Timer1 Operation
T1OSI
T1OSI
Timer1 Oscillator
Timer1 Oscillator
T1OSCEN
T1CKPS1:T1CKPS0
T1SYNC
TMR1ON
TIMER1 BLOCK DIAGRAM (16-BIT READ/WRITE MODE)
TIMER1 BLOCK DIAGRAM
T1OSCEN
T1CKPS1:T1CKPS0
T1SYNC
TMR1ON
(1)
(1)
TMR1CS
TMR1CS
(CCP Special Event Trigger)
(CCP Special Event Trigger)
Clear TMR1
Clear TMR1
Advance Information
Clock
Internal
F
Clock
Internal
F
OSC
OSC
/4
/4
On/Off
1
0
1
0
Prescaler
1, 2, 4, 8
Prescaler
1, 2, 4, 8
cycle (F
on every rising edge of the Timer1 external clock input
or the Timer1 oscillator, if enabled.
When Timer1 is enabled, the RC1/T1OSI/UOE and
RC0/T1OSO/T1CKI pins become inputs. This means
the values of TRISC<1:0> are ignored and the pins are
read as ‘0’.
2
2
OSC
TMR1L
TMR1L
/4). When the bit is set, Timer1 increments
8
Synchronize
8
Sleep Input
Synchronize
Sleep Input
Detect
Detect
High Byte
High Byte
TMR1H
TMR1
TMR1
8
© 2006 Microchip Technology Inc.
8
8
Internal Data Bus
1
0
1
0
Read TMR1L
Write TMR1L
Set
TMR1IF
on Overflow
Set
TMR1IF
on Overflow
Timer1
On/Off
Timer1
On/Off
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