參數(shù)資料
型號(hào)： 16LF628A
廠(chǎng)商： Microchip Technology Inc.
元件分類(lèi)： 8位微控制器
英文描述： FLASH-Based 8-Bit CMOS Microcontrollers
中文描述： 基于閃存的8位CMOS微控制器
文件頁(yè)數(shù)： 61/168頁(yè)
文件大?。?/td> 3760K
代理商： 16LF628A
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)當(dāng)前第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)
2002 Microchip Technology Inc.
Preliminary
DS40044A-page 59
PIC16F627A/628A/648A
9.3.2
PWM DUTY CYCLE
The PWM duty cycle is specified by writing to the
CCPR1L register and to the CCP1CON<5:4> bits. Up
to 10-bit resolution is available: the CCPR1L contains
the eight MSbs and the CCP1CON<5:4> contains the
two LSbs. This 10-bit value is represented by
CCPR1L:CCP1CON<5:4>. The following equation is
used to calculate the PWM duty cycle in time:
CCPR1L and CCP1CON<5:4> can be written to at any
time, but the duty cycle value is not latched into
CCPR1H until after a match between PR2 and TMR2
occurs (i.e., the period is complete). In PWM mode,
CCPR1H is a read-only register.
The CCPR1H register and a 2-bit internal latch are
used to double buffer the PWM duty cycle. This double
buffering is essential for glitch less PWM operation.
When the CCPR1H and 2-bit latch match TMR2 con-
catenated with an internal 2-bit Q clock or 2 bits of the
TMR2 prescaler, the CCP1 pin is cleared.
Maximum PWM resolution (bits) for a given PWM
frequency:
For an example PWM period and duty cycle calcula-
tion, see the PICmicro Mid-Range Reference Man-
ual (DS33023).
9.3.3
SET-UP FOR PWM OPERATION
The following steps should be taken when configuring
the CCP module for PWM operation:
1.
Set the PWM period by writing to the PR2 regis-
ter.
2.
Set the PWM duty cycle by writing to the
CCPR1L register and CCP1CON<5:4> bits.
3.
Make the CCP1 pin an output by clearing the
TRISB<3> bit.
4.
Set the TMR2 prescale value and enable Timer2
by writing to T2CON.
5.
Configure the CCP1 module for PWM operation.
TABLE 9-3:
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 20 MHz
TABLE 9-4:
REGISTERS ASSOCIATED WITH PWM AND TIMER2
(CCPR1L:CCP1CON<5:4>)
Tosc
TMR2 prescale
value
PWM duty cycle
=
Note:
If the PWM duty cycle value is longer than
the PWM period the CCP1 pin will not be
cleared.
Resolution
log
--------------------------------------------------------------------------- bits
log(2)
---------------------TMR2 Prescaler
=
PWM
PWM Frequency
1.22 kHz
4.88 kHz
19.53 kHz
78.12 kHz
156.3 kHz
208.3 kHz
Timer Prescaler (1, 4, 16)
16
4
1
1
1
1
PR2 Value
0xFF
0xFF
0xFF
0x3F
0x1F
0x17
Maximum Resolution (bits)
10
10
10
8
7
6.5
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on
POR
Value on
all other
RESETS
0Bh, 8Bh,
10Bh, 18Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x
0000 000u
0Ch
PIR1
EEIF
CMIF
RCIF
TXIF
—
CCP1IF
TMR2IF
TMR1IF
0000 -000
0000 -000
8Ch
PIE1
EEIE
CMIE
RCIE
TXIE
—
CCP1IE
TMR2IE
TMR1IE
0000 -000
0000 -000
86h, 186h
TRISB
PORTB Data Direction Register
1111 1111
1111 1111
11h
TMR2
Timer2 module’s register
0000 0000
0000 0000
92h
PR2
Timer2 module’s period register
1111 1111
1111 1111
12h
T2CON
—
TOUTPS3 TOUTPS2
TOUTPS1
TOUTPS0
TMR2ON
T2CKPS1 T2CKPS0
-000 0000
uuuu uuuu
15h
CCPR1L
Capture/Compare/PWM register1 (LSB)
xxxx xxxx
uuuu uuuu
16h
CCPR1H
Capture/Compare/PWM register1 (MSB)
xxxx xxxx
uuuu uuuu
17h
CCP1CON
—
—
CCP1X
CCP1Y
CCP1M3
CCP1M2
CCP1M1
CCP1M0
--00 0000
--00 0000
Legend:
x
= unknown,
u
= unchanged,
-
= unimplemented read as '0'. Shaded cells are not used by PWM and Timer2.
相關(guān)PDF資料
PDF描述
16F628 CAT 5E CROSSOVER PATCH CORD CABLE BLUE 1 FT
16M0 PC SERIAL MODEM CBL 50 FT
16M0B APPLE IIC CABLE TO IWRTR MODEM
16M0BC KEYBD.EXT. MINI DIN 4 MM 6 FT
16M0BS KEYBD.EXT. MINI DIN 4 MM 10 FT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
16LH 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:Precision Linear Transducers, Designed for Mounting in Hydraulic or Pneumatic Cylinder, Conductive Plastic Element (REC)
16LH_08 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:Precision Linear Transducers, Designed for Mounting in Hydraulic or Pneumatic Cylinder
16LH4A152WE 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:Precision Linear Transducers, Designed for Mounting in Hydraulic or Pneumatic Cylinder
16LH4D152WE 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:Precision Linear Transducers, Designed for Mounting in Hydraulic or Pneumatic Cylinder
16LH4E152WE 制造商:VISHAY 制造商全稱(chēng):Vishay Siliconix 功能描述:Precision Linear Transducers, Designed for Mounting in Hydraulic or Pneumatic Cylinder
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*