參數(shù)資料
型號： PIC16LC716T
廠商： Microchip Technology Inc.
英文描述： 8-Bit CMOS Microcontrollers with A/D Converter and Capture/Compare/PWM
中文描述： 8位CMOS微控制器與A / D轉(zhuǎn)換器和捕捉/比較/ PWM
文件頁數(shù)： 31/108頁
文件大小： 1810K
代理商： PIC16LC716T
PIC16C712/716
1999 Microchip Technology Inc.
Preliminary
DS41106A-page 31
5.0
TIMER1 MODULE
The Timer1 module timer/counter has the following fea-
tures:
16-bit timer/counter
(Two 8-bit registers; TMR1H and TMR1L)
Readable and writable (Both registers)
Internal or external clock select
Interrupt on overflow from FFFFh to 0000h
Reset from CCP module trigger
Timer1 has a control register, shown in Figure 5-1.
Timer1 can be enabled/disabled by setting/clearing
control bit TMR1ON (T1CON<0>).
Figure 5-2 is a simplified block diagram of the Timer1
module.
Additional information on timer modules is available in
the PICmicro Mid-Range Reference Manual,
(DS33023).
5.1
Timer1 Operation
Timer1 can operate in one of these modes:
As a timer
As a synchronous counter
As an asynchronous counter
The operating mode is determined by the clock select
bit, TMR1CS (T1CON<1>).
In timer mode, Timer1 increments every instruction
cycle. In counter mode, it increments on every rising
edge of the external clock input.
When the Timer1 oscillator is enabled (T1OSCEN is
set), the RB2/T1OSI and RB1/T1OSO/T1CKI pins
become inputs. That is, the TRISB<2:1> value is
ignored.
Timer1 also has an internal “reset input”. This reset can
be generated by the CCP module (Section 7.0).
FIGURE 5-1:
T1CON: TIMER1 CONTROL REGISTER
(ADDRESS 10h)
U-0
U-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
—
—
T1CKPS1 T1CKPS0 T1OSCEN
T1SYNC
TMR1CS TMR1ON
R
W = Writable bit
U
= Unimplemented bit,
read as ‘0’
- n = Value at POR reset
= Readable bit
bit7
bit0
bit 7-6:
bit 5-4:
T1CKPS1:T1CKPS0
: Timer1 Input Clock Prescale Select bits
11
= 1:8 Prescale value
10
= 1:4 Prescale value
01
= 1:2 Prescale value
00
= 1:1 Prescale value
bit 3:
T1OSCEN
: Timer1 Oscillator Enable Control bit
1 = Oscillator is enabled
0 = Oscillator is shut off
Note: The oscillator inverter and feedback resistor are turned off to eliminate power drain
bit 2:
T1SYNC
: Timer1 External Clock Input Synchronization Control bit
Unimplemented:
Read as ’0’
TMR1CS = 1
1 = Do not synchronize external clock input
0 = Synchronize external clock input
TMR1CS = 0
This bit is ignored. Timer1 uses the internal clock when TMR1CS = 0.
TMR1CS
: Timer1 Clock Source Select bit
1 = External clock from pin RB1/T1OSO/T1CKI (on the rising edge)
0 = Internal clock (F
OSC
/4)
TMR1ON
: Timer1 On bit
1 = Enables Timer1
0 = Stops Timer1
bit 1:
bit 0:
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PIC16LC716T-04I/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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