参数资料
型号: PIC16C712-20E/SS
厂商: Microchip Technology
文件页数: 51/106页
文件大小: 0K
描述: IC MCU OTP 1KX14 A/D PWM 20SSOP
产品培训模块: Asynchronous Stimulus
标准包装: 67
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 13
程序存储器容量: 1.75KB(1K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
包装: 管件
配用: 309-1016-ND - ADAPTER 20-SSOP TO 18-DIP
2005 Microchip Technology Inc.
DS41106B-page 47
PIC16C712/716
The ADRES register contains the result of the A/D
conversion. When the A/D conversion is complete, the
result is loaded into the ADRES register, the GO/DONE
bit (ADCON0<2>) is cleared and the A/D Interrupt Flag
bit ADIF is set. The block diagram of the A/D module is
shown in Figure 8-3.
The value that is in the ADRES register is not modified
for a Power-on Reset. The ADRES register will contain
unknown data after a Power-on Reset.
After the A/D module has been configured as desired,
the selected channel must be acquired before the
conversion is started. The analog input channels must
have their corresponding TRIS bits selected as an
input. To determine acquisition time, see Section 8.1
tion time has elapsed, the A/D conversion can be
started. The following steps should be followed for
doing an A/D conversion:
1.
Configure the A/D module:
Configure analog pins/voltage reference/
and digital I/O (ADCON1)
Select A/D input channel (ADCON0)
Select A/D conversion clock (ADCON0)
Turn on A/D module (ADCON0)
2.
Configure A/D interrupt (if desired):
Clear ADIF bit
Set ADIE bit
Set GIE bit
3.
Wait the required acquisition time.
4.
Start conversion:
Set GO/DONE bit (ADCON0)
5.
Wait for A/D conversion to complete, by either:
Polling for the GO/DONE bit to be cleared
OR
Waiting for the A/D interrupt
6.
Read A/D Result register (ADRES), clear bit
ADIF if required.
7.
For the next conversion, go to step 1 or step 2
as required. The A/D conversion time per bit is
defined as TAD. A minimum wait of 2TAD is
required before next acquisition starts.
FIGURE 8-3:
A/D BLOCK DIAGRAM
(Input voltage)
VIN
VREF
(Reference
voltage)
VDD
PCFG2:PCFG0
CHS2:CHS0
000
or
010
or
110
or 111
001
or
011
or
101
RA3/AN3/VREF
RA2/AN2
RA1/AN1
RA0/AN0
011
010
001
000
A/D
Converter
100
or
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