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| 型號(hào)： | PIC18F4553 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 28/40/44-Pin High-Performance, Enhanced Flash, USB Microcontrollers with 12-Bit A/D and nanoWatt Technology |
| 中文描述： | 28/40/44-Pin高性能，增強(qiáng)型閃存，USB微控制器與12位A / D和納瓦技術(shù) |
| 文件頁(yè)數(shù)： | 30/46頁(yè) |
| 文件大?。?/td> | 607K |
| 代理商： | PIC18F4553 |
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PIC18F2458/2553/4458/4553
DS39887B-page 28
Preliminary
2007 Microchip Technology Inc.
2.8
Use of the CCP2 Trigger
An A/D conversion can be started by the Special Event
Trigger of the CCP2 module. This requires that the
CCP2M3:CCP2M0 bits (CCP2CON<3:0>) be pro-
grammed as ‘
1011
’ and that the A/D module is enabled
(ADON bit is set). When the trigger occurs, the GO/
DONE bit will be set, starting the A/D acquisition and
conversion, and the Timer1 (or Timer3) counter will be
reset to zero. Timer1 (or Timer3) is reset to automatically
repeat the A/D acquisition period with minimal software
overhead (firmware must move ADRESH:ADRESL to
the desired location). The appropriate analog input
channel must be selected and the minimum acquisition
period is either timed by the user, or an appropriate T
ACQ
time selected before the Special Event Trigger sets the
GO/DONE bit (starts a conversion).
If the A/D module is not enabled (ADON is cleared), the
Special Event Trigger will be ignored by the A/D
module, but will still reset the Timer1 (or Timer3)
counter.
TABLE 2-2:
REGISTERS ASSOCIATED WITH A/D OPERATION
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset
Values
on Page:
INTCON
PIR1
PIE1
IPR1
PIR2
PIE2
IPR2
ADRESH
ADRESL
GIE/GIEH PEIE/GIEL
SPPIF
(1)
SPPIE
(1)
SPPIP
(1)
OSCFIF
OSCFIE
OSCFIP
A/D Result Register High Byte
A/D Result Register Low Byte
TMR0IE
RCIF
RCIE
RCIP
USBIF
USBIE
USBIP
INT0IE
TXIF
TXIE
TXIP
EEIF
EEIE
EEIP
RBIE
SSPIF
SSPIE
SSPIP
BCLIF
BCLIE
BCLIP
TMR0IF
CCP1IF
CCP1IE
CCP1IP
HLVDIF
HLVDIE
HLVDIP
INT0IF
TMR2IF
TMR2IE
TMR2IP
TMR3IF
TMR3IE
TMR3IP
RBIF
TMR1IF
TMR1IE
TMR1IP
CCP2IF
CCP2IE
CCP2IP
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
ADIF
ADIE
ADIP
CMIF
CMIE
CMIP
ADCON0
ADCON1
ADCON2
PORTA
TRISA
PORTB
TRISB
LATB
PORTE
(1)
TRISE
(1)
LATE
(1)
Legend:
Note 1:
—
—
—
—
—
CHS3
VCFG1
ACQT2
RA5
PORTA Data Direction Control Register
RB5
RB4
CHS2
VCFG0
ACQT1
RA4
CHS1
PCFG3
ACQT0
RA3
CHS0
PCFG2
ADCS2
RA2
GO/DONE
PCFG1
ADCS1
RA1
ADON
PCFG0
ADCS0
RA0
19
20
21
(4)
(4)
(4)
(4)
(4)
(4)
(4)
(4)
ADFM
—
—
RB7
PORTB Data Direction Control Register
PORTB Data Latch Register (Read and Write to Data Latch)
RDPU
—
—
—
—
—
—
—
—
— = unimplemented, read as ‘
0
’. Shaded cells are not used for A/D conversion.
These registers and/or bits are not implemented on 28-pin devices and are read as ‘
0
’.
RA6 and its associated latch and data direction bits are enabled as I/O pins based on oscillator configuration;
otherwise, they are read as ‘
0
’.
RE3 port bit is available only as an input pin when the MCLRE Configuration bit is ‘
0
’.
For these Reset values, see the
“PIC18F2455/2550/4455/4550 Data Sheet”
.
RA6
(2)
TRISA6
(2)
RB6
RB3
RB2
RB1
RB0
—
—
—
RE3
(3)
—
—
RE2
(1)
TRISE2
PORTE Data Latch Register
RE1
(1)
TRISE1
RE0
(1)
TRISE0
2:
3:
4:
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| PIC18F4553-I/ML | 功能描述:8位微控制器 -MCU 32KB FLSH 2048 RAM FSUSB 2.0 12B ADC 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| PIC18F4553-I/P | 功能描述:8位微控制器 -MCU 32KB FLSH 2048 RAM FSUSB 2.0 12B ADC 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| PIC18F4553-I/P | 制造商:Microchip Technology Inc 功能描述:8-Bit Microcontroller IC |
| PIC18F4553-I/PT | 功能描述:8位微控制器 -MCU 32KB FLSH 2048 RAM FSUSB 2.0 12B ADC 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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 |
| PIC18F4553T-I/ML | 功能描述:8位微控制器 -MCU 32KB FLSH 2048 RAM FSUSB 2.0 12B ADC 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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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