參數資料
型號: PIC18F6493-I/PT
廠商: Microchip Technology
文件頁數: 35/41頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 8KX16 64TQFP
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 160
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,HLVD,LCD,POR,PWM,WDT
輸入/輸出數: 50
程序存儲器容量: 16KB(8K x 16)
程序存儲器類型: 閃存
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 4.2 V ~ 5.5 V
數據轉換器: A/D 12x12b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 托盤
產品目錄頁面: 643 (CN2011-ZH PDF)
配用: XLT64PT5-ND - SOCKET TRAN ICE 64MQFP/TQFP
PIC18F6393/6493/8393/8493
DS39896C-page 40
2010 Microchip Technology Inc.
2.8
Use of the ECCP2 Trigger
An A/D conversion can be started by the Special Event
Trigger of the ECCP2 module. This requires that the
CCP2M<3:0> bits (CCP2CON<3:0>) be programmed
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
(moving 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 TACQ 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
INTCON
GIE/GIEH PEIE/GIEL TMR0IE
INT0IE
RBIE
TMR0IF
INT0IF
RBIF
(3)
PIR1
—ADIF
RC1IF
TX1IF
SSP1IF
CCP1IF
TMR2IF
TMR1IF
(3)
PIE1
—ADIE
RC1IE
TX1IE
SSP1IE
CCP1IE
TMR2IE
TMR1IE
(3)
IPR1
—ADIP
RC1IP
TX1IP
SSP1IP
CCP1IP
TMR2IP
TMR1IP
(3)
PIR2
OSCFIF
CMIF
BCL1IF
HLVDIF
TMR3IF
CCP2IF
(3)
PIE2
OSCFIE
CMIE
BCL1IE
HLVDIE
TMR3IE
CCP2IE
(3)
IPR2
OSCFIP
CMIP
BCL1IP
HLVDIP
TMR3IP
CCP2IP
(3)
ADRESH
A/D Result Register High Byte
(3)
ADRESL
A/D Result Register Low Byte
(3)
ADCON0
CHS3
CHS2
CHS1
CHS0
GO/DONE
ADON
(3)
ADCON1
VCFG1
VCFG0
PCFG3
PCFG2
PCFG1
PCFG0
(3)
ADCON2
ADFM
ACQT2
ACQT1
ACQT0
ADCS2
ADCS1
ADCS0
(3)
TRISA
TRISA7(1) TRISA6(1)
TRISA5
TRISA4
TRISA3
TRISA2
TRISA1
TRISA0
(3)
TRISF
TRISF7
TRISF6
TRISF5
TRISF4
TRISF3
TRISF2
TRISF1
TRISF0
(3)
TRISH(2)
TRISH7
TRISH6
TRISH5
TRISH4
TRISH3
TRISH2
TRISH1
TRISH0
(3)
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used for A/D conversion.
Note 1: PORTA<7:6> and their direction bits are individually configured as port pins based on various primary
oscillator modes. When disabled, these bits read as ‘0’.
2: These registers are not implemented on 64-pin devices.
3: For these Reset values, see the “PIC18F6390/6490/8390/8490 Data Sheet” (DS39629).
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