參數資料
型號: PIC16C710-20/P
廠商: Microchip Technology
文件頁數: 115/177頁
文件大小: 0K
描述: IC MCU OTP 512X14 A/D 18DIP
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 25
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設備: 欠壓檢測/復位,POR,WDT
輸入/輸出數: 13
程序存儲器容量: 896B(512 x 14)
程序存儲器類型: OTP
RAM 容量: 36 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
數據轉換器: A/D 4x8b
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 18-DIP(0.300",7.62mm)
包裝: 管件
配用: ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1059-ND - ADAPTER 18 ZIF BD W/18SO PLUGS
DVA16XP180-ND - ADAPTER DEVICE FOR MPLAB-ICE
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
PIC16C71X
DS30272A-page 42
1997 Microchip Technology Inc.
7.4
A/D Conversions
Example 7-2 shows how to perform an A/D conversion.
The RA pins are congured as analog inputs. The ana-
log reference (VREF) is the device VDD. The A/D inter-
rupt is enabled, and the A/D conversion clock is FRC.
The conversion is performed on the RA0 pin (channel
0).
Clearing the GO/DONE bit during a conversion will
abort the current conversion. The ADRES register will
NOT be updated with the partially completed A/D con-
version sample. That is, the ADRES register will con-
tinue to contain the value of the last completed
conversion (or the last value written to the ADRES reg-
ister). After the A/D conversion is aborted, a 2TAD wait
is required before the next acquisition is started. After
this 2TAD wait, an acquisition is automatically started
on the selected channel.
Note:
The GO/DONE bit should NOT be set in
the same instruction that turns on the A/D.
EXAMPLE 7-2:
A/D CONVERSION
BSF
STATUS, RP0
; Select Bank 1
CLRF
ADCON1
; Configure A/D inputs
BCF
STATUS, RP0
; Select Bank 0
MOVLW
0xC1
; RC Clock, A/D is on, Channel 0 is selected
MOVWF
ADCON0
;
BSF
INTCON, ADIE
; Enable A/D Interrupt
BSF
INTCON, GIE
; Enable all interrupts
;
Ensure that the required sampling time for the selected input channel has elapsed.
;
Then the conversion may be started.
;
BSF
ADCON0, GO
; Start A/D Conversion
:
; The ADIF bit will be set and the GO/DONE bit
:
;
is cleared upon completion of the A/D Conversion.
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