参数资料
型号: PIC16C711-20I/SS
厂商: Microchip Technology
文件页数: 109/177页
文件大小: 0K
描述: IC MCU OTP 1KX14 A/D 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,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: 68 x 8
电压 - 电源 (Vcc/Vdd): 4 V ~ 6 V
数据转换器: A/D 4x8b
振荡器型: 外部
工作温度: -40°C ~ 85°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
1997 Microchip Technology Inc.
DS30272A-page 37
PIC16C71X
FIGURE 7-1:
ADCON0 REGISTER (ADDRESS 08h), PIC16C710/71/711
R/W-0
U-0
R/W-0
ADCS1 ADCS0
(1)
CHS1
CHS0
GO/DONE
ADIF
ADON
R = Readable bit
W = Writable bit
U = Unimplemented
bit, read as ‘0’
- n =Value at POR reset
bit7
bit0
bit 7-6:
ADCS1:ADCS0: A/D Conversion Clock Select bits
00
= FOSC/2
01
= FOSC/8
10
= FOSC/32
11
= FRC (clock derived from an RC oscillation)
bit 5:
Unimplemented: Read as '0'.
bit 4-3:
CHS1:CHS0: Analog Channel Select bits
00
= channel 0, (RA0/AN0)
01
= channel 1, (RA1/AN1)
10
= channel 2, (RA2/AN2)
11
= channel 3, (RA3/AN3)
bit 2:
GO/DONE: A/D Conversion Status bit
If ADON = 1:
1 = A/D conversion in progress (setting this bit starts the A/D conversion)
0 = A/D conversion not in progress (This bit is automatically cleared by hardware when the A/D conver-
sion is complete)
bit 1:
ADIF: A/D Conversion Complete Interrupt Flag bit
1 = conversion is complete (must be cleared in software)
0 = conversion is not complete
bit 0:
ADON: A/D On bit
1 = A/D converter module is operating
0 = A/D converter module is shutoff and consumes no operating current
Note 1: Bit5 of ADCON0 is a General Purpose R/W bit for the PIC16C710/711 only. For the PIC16C71, this bit is
unimplemented, read as '0'.
7.0
ANALOG-TO-DIGITAL
CONVERTER (A/D) MODULE
The analog-to-digital (A/D) converter module has four
analog inputs.
The A/D allows conversion of an analog input signal to
a corresponding 8-bit digital number (refer to Applica-
tion Note AN546 for use of A/D Converter). The output
of the sample and hold is the input into the converter,
which generates the result via successive approxima-
tion. The analog reference voltage is software select-
able to either the device’s positive supply voltage (VDD)
or the voltage level on the RA3/AN3/VREF pin.
Applicable Devices
710 71 711 715
The A/D converter has a unique feature of being able
to operate while the device is in SLEEP mode. To oper-
ate in sleep, the A/D conversion clock must be derived
from the A/D’s internal RC oscillator.
The A/D module has three registers. These registers
are:
A/D Result Register (ADRES)
A/D Control Register 0 (ADCON0)
A/D Control Register 1 (ADCON1)
The ADCON0 register, shown in Figure 7-1 and
Figure 7-2, controls the operation of the A/D module.
The ADCON1 register, shown in Figure 7-3 congures
the functions of the port pins. The port pins can be con-
gured as analog inputs (RA3 can also be a voltage ref-
erence) or as digital I/O.
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