參數(shù)資料
型號： AT90S2313-10PC
廠商： Atmel
文件頁數(shù)： 80/92頁
文件大?。?/td> 0K
描述： IC MCU 2K FLSH 10MHZ UART 20DIP
標準包裝： 18
系列： AVR® 90S
核心處理器： AVR
芯體尺寸： 8-位
速度： 10MHz
連通性： SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 15
程序存儲器容量： 2KB（1K x 16）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 128 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 6 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 20-DIP（0.300"，7.62mm）
包裝： 管件
1997 Microchip Technology Inc.
DS30234D-page 81
PIC16C6X
EXAMPLE 10-2: PWM PERIOD AND DUTY
CYCLE CALCULATION
Desired PWM frequency is 78.125 kHz,
Fosc = 20 MHz
TMR2 prescale = 1
1/78.125 kHz = [(PR2) + 1] 4 1/20 MHz 1
12.8
s
= [(PR2) + 1] 4 50 ns 1
PR2
= 63
Find the maximum resolution of the duty cycle that can
be used with a 78.125 kHz frequency and 20 MHz
oscillator:
1/78.125 kHz = 2
PWM RESOLUTION 1/20 MHz 1
12.8
s= 2PWM RESOLUTION 50 ns 1
256
= 2
PWM RESOLUTION
log(256)
= (PWM Resolution) log(2)
8.0
= PWM Resolution
At most, an 8-bit resolution duty cycle can be obtained
from a 78.125 kHz frequency and a 20 MHz oscillator,
i.e., 0
≤ CCPR1L:CCP1CON<5:4> ≤ 255. Any value
greater than 255 will result in a 100% duty cycle.
In order to achieve higher resolution, the PWM fre-
quency must be decreased. In order to achieve higher
PWM frequency, the resolution must be decreased.
Table 10-3 lists example PWM frequencies and resolu-
tions for Fosc = 20 MHz. The TMR2 prescaler and PR2
values are also shown.
10.3.3
SET-UP FOR PWM OPERATION
The following steps should be taken when conguring
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
TRISC<2> bit.
4.
Set the TMR2 prescale value and enable Timer2
by writing to T2CON.
5.
Congure the CCP1 module for PWM operation.
TABLE 10-3:
EXAMPLE PWM FREQUENCIES AND RESOLUTIONS AT 20 MHz
TABLE 10-4:
REGISTERS ASSOCIATED WITH TIMER1, CAPTURE AND COMPARE
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
1111
PR2 Value
0xFF
0x3F
0x1F
0x17
Maximum Resolution (bits)
10
8
7
5.5
Add
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Value on:
POR,
BOR
Value on
all other
Resets
0Bh,8Bh
10Bh,18Bh
INTCON
GIE
PEIE
T0IE
INTE
RBIE
T0IF
INTF
RBIF
0000 000x 0000 000u
0Ch
PIR1
PSPIF(2)
(3)
RCIF(1)
TXIF(1)
SSPIF
CCP1IF TMR2IF
TMR1IF 0000 0000 0000 0000
0Dh(4)
PIR2
—
CCP2IF ---- ---0 ---- ---0
8Ch
PIE1
PSPIE(2)
(3)
RCIE(1)
TXIE(1)
SSPIE
CCP1IE TMR2IE TMR1IE 0000 0000 0000 0000
8Dh(4)
PIE2
—
CCP2IE ---- ---0 ---- ---0
87h
TRISC
PORTC Data Direction register
1111 1111 1111 1111
0Eh
TMR1L
Holding register for the Least Signicant Byte of the 16-bit TMR1 register
xxxx xxxx uuuu uuuu
0Fh
TMR1H
Holding register for the Most Signicant Byte of the 16-bit TMR1 register
xxxx xxxx uuuu uuuu
10h
T1CON
—
T1CKPS1 T1CKPS0 T1OSCEN T1SYNC TMR1CS TMR1ON --00 0000 --uu uuuu
15h
CCPR1L
Capture/Compare/PWM1 (LSB)
xxxx xxxx uuuu uuuu
16h
CCPR1H
Capture/Compare/PWM1 (MSB)
xxxx xxxx uuuu uuuu
17h
CCP1CON
—
CCP1X
CCP1Y
CCP1M3 CCP1M2 CCP1M1 CCP1M0 --00 0000 --00 0000
1Bh(4)
CCPR2L
Capture/Compare/PWM2 (LSB)
xxxx xxxx uuuu uuuu
1Ch(4)
CCPR2H
Capture/Compare/PWM2 (MSB)
xxxx xxxx uuuu uuuu
1Dh(4)
CCP2CON
—
CCP2X
CCP2Y
CCP2M3 CCP2M2 CCP2M1 CCP2M0 --00 0000 --00 0000
Legend:
x
= unknown, u = unchanged, - = unimplemented locations read as '0’. Shaded cells are not used in these modes.
Note 1:
These bits are associated with the USART module, which is implemented on the PIC16C63/R63/65/65A/R65/66/67 only.
2:
Bits PSPIE and PSPIF are reserved on the PIC16C62/62A/R62/63/R63/66, always maintain these bits clear.
3:
The PIR1<6> and PIE1<6> bits are reserved, always maintain these bits clear.
4:
These registers are associated with the CCP2 module, which is only implemented on the PIC16C63/R63/65/65A/R65/66/67.
相關(guān)PDF資料
PDF描述
AT90S4433-8AC IC MCU 4K FLSH 8MHZ A/D 32TQFP
AT90S8515A-8PC IC MCU 8K FLSH 8MHZ 40DIP
AT90S8535-8PI IC MCU 8K FLSH 8MHZ A/D IT 40DIP
AT90USB1287-16AUR IC MCU AVR 128K ISP USB TQFP64
AT90USB162-16AUR IC AVR MCU 16K FLASH 32TQFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT90S2313-10PI 功能描述:8位微控制器 -MCU 2k bit 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 安裝風格:SMD/SMT
AT90S2313-10SC 功能描述:8位微控制器 -MCU 2K Flash 5V 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 安裝風格:SMD/SMT
AT90S231310SCSL383 制造商:Atmel Corporation 功能描述:
AT90S2313-10SI 功能描述:8位微控制器 -MCU 2K Flash 5V 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 安裝風格:SMD/SMT
AT90S2313-4PC 功能描述:8位微控制器 -MCU 2K Flash 3V 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 安裝風格:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*