PIC16F648A-I/P Microchip Technology Inc., PIC16F648A-I/P Datasheet - Page 34
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PIC16F648A-I/P
Manufacturer Part Number
PIC16F648A-I/P
Description
18 PIN, 7 KB FLASH, 256 RAM, 16 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F648A-IP.pdf
(132 pages)
Specifications of PIC16F648A-I/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
256 Bytes
Input Output
16
Interface
USART
Memory Type
Flash
Number Of Bits
8
Package Type
18-pin PDIP
Programmable Memory
7K Bytes
Ram Size
256 Bytes
Speed
20 MHz
Timers
2-8-bit, 1-16-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:
PIC16F648A-I/P
Manufacturer:
MICROCHIP
Quantity:
2 100
Part Number:
PIC16F648A-I/P
Manufacturer:
MICROCH
Quantity:
20 000
PIC16F630/676
5.0
The PIC16F630/676 devices have a 16-bit timer.
Figure 5-1 shows the basic block diagram of the Timer1
module. Timer1 has the following features:
• 16-bit timer/counter (TMR1H:TMR1L)
• Readable and writable
• Internal or external clock selection
• Synchronous or asynchronous operation
• Interrupt on overflow from FFFFh to 0000h
• Wake-up upon overflow (Asynchronous mode)
• Optional external enable input (T1G)
• Optional LP oscillator
FIGURE 5-1:
DS40039C-page 32
TIMER1 MODULE WITH GATE
CONTROL
INTOSC
w/o CLKOUT
T1OSCEN
LP
OSC1
OSC2
TIMER1 BLOCK DIAGRAM
Set Flag bit
TMR1IF on
Overflow
LP Oscillator
TMR1H
TMR1
TMR1L
Clock
F
Internal
OSC
/4
The Timer1 Control register (T1CON), shown in
Register 5-1, is used to enable/disable Timer1 and
select the various features of the Timer1 module.
TMR1CS
1
0
Note:
T1CKPS<1:0>
T1SYNC
Additional information on timer modules is
available in the PICmicro
Reference Manual, (DS33023).
Prescaler
1, 2, 4, 8
0
1
2
TMR1ON
TMR1GE
TMR1ON
TMR1GE
2003 Microchip Technology Inc.
Synchronized
Clock Input
SLEEP Input
Synchronize
Detect
TM
T1G
Mid-Range