参数资料
型号: RFPIC12F675H-E/SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, RISC MICROCONTROLLER, PDSO20
封装: 0.209 INCH, PLASTIC, MO-150, SSOP-20
文件页数: 48/123页
文件大小: 5438K
代理商: RFPIC12F675H-E/SS
rfPIC12F675
DS70091A-page 28
Preliminary
2003 Microchip Technology Inc.
5.0
TIMER1 MODULE WITH GATE
CONTROL
The rfPIC12F675 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
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.
FIGURE 5-1:
TIMER1 BLOCK DIAGRAM
Note:
Additional information on timer modules is
available in the PICmicroTM Mid-Range
Reference Manual (DS33023).
TMR1H
TMR1L
LP Oscillator
T1SYNC
TMR1CS
T1CKPS<1:0>
SLEEP Input
F
OSC/4
Internal
Clock
Prescaler
1, 2, 4, 8
Synchronize
Detect
1
0
1
Synchronized
Clock Input
2
OSC1
OSC2
Set Flag bit
TMR1IF on
Overflow
TMR1
TMR1ON
TMR1GE
TMR1ON
TMR1GE
INTOSC
T1OSCEN
LP
w/o CLKOUT
T1G
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