參數(shù)資料
型號(hào): PIC18F87J93-I/PT
廠商: Microchip Technology
文件頁(yè)數(shù): 22/54頁(yè)
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 128KX4 80-TQFP
產(chǎn)品培訓(xùn)模塊: PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 119
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 48MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,LCD,LVD,POR,PWM,WDT
輸入/輸出數(shù): 67
程序存儲(chǔ)器容量: 128KB(64K x 16)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 3923 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 12x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 80-TQFP
包裝: 托盤
產(chǎn)品目錄頁(yè)面: 644 (CN2011-ZH PDF)
2009 Microchip Technology Inc.
Preliminary
DS39948A-page 27
PIC18F87J93 FAMILY
2.0
12-BIT ANALOG-TO-DIGITAL
CONVERTER (A/D) MODULE
The Analog-to-Digital (A/D) converter module has
12 inputs for all PIC18F87J93 family devices. This
module allows conversion of an analog input signal to
a corresponding 12-bit digital number.
The module has these registers:
A/D Result High Register (ADRESH)
A/D Result Low Register (ADRESL)
A/D Control Register 0 (ADCON0)
A/D Control Register 1 (ADCON1)
A/D Control Register 2 (ADCON2)
The ADCON0 register, shown in Register 2-1, controls
the operation of the A/D module. The ADCON1
register,
shown
in
configures
the
functions of the port pins. The ADCON2 register,
shown in Register 2-3, configures the A/D clock
source, programmed acquisition time and justification.
REGISTER 2-1:
ADCON0: A/D CONTROL REGISTER 0
R/W-0
U-0
R/W-0
ADCAL
CHS3
CHS2
CHS1
CHS0
GO/DONE
ADON
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
ADCAL: A/D Calibration bit
1
= Calibration is performed on next A/D conversion
0
= Normal A/D converter operation (no calibration is performed)
bit 6
Unimplemented: Read as ‘0’
bit 5-2
CHS<3:0>: Analog Channel Select bits
0000
= Channel 00 (AN0)
0001
= Channel 01 (AN1)
0010
= Channel 02 (AN2)
0011
= Channel 03 (AN3)
0100
= Channel 04 (AN4)
0101
= Channel 05 (AN5)
0110
= Channel 06 (AN6)
0111
= Channel 07 (AN7)
1000
= Channel 08 (AN8)
1001
= Channel 09 (AN9)
1010
= Channel 10 (AN10)
1011
= Channel 11 (AN11)
11xx
= Unused
bit 1
GO/DONE: A/D Conversion Status bit
When ADON = 1:
1
= A/D conversion in progress
0
= A/D Idle
bit 0
ADON: A/D On bit
1
= A/D converter module is enabled
0
= A/D converter module is disabled
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