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型号： PIC18F87J93T-I/PT
厂商： Microchip Technology
文件页数： 27/54页
文件大小： 0K
描述： IC PIC MCU FLASH 128KB 80-TQFP
产品培训模块： PIC18 J Series MCU Overview
标准包装： 1,200
系列： PIC® 18F
核心处理器： PIC
芯体尺寸： 8-位
速度： 48MHz
连通性： I²C，LIN，SPI，UART/USART
外围设备： 欠压检测/复位，LCD，LVD，POR，PWM，WDT
输入/输出数： 67
程序存储器容量： 128KB（64K x 16）
程序存储器类型： 闪存
RAM 容量： 3923 x 8
电压 - 电源 (Vcc/Vdd)： 2 V ~ 3.6 V
数据转换器： A/D 12x12b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 80-TQFP
包装： 带卷 (TR)
2009 Microchip Technology Inc.
Preliminary
DS39948A-page 31
PIC18F87J93 FAMILY
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 2.1
“A/D Acquisition Requirements”. After this acquisi-
tion time has elapsed, the A/D conversion can be
started. An acquisition time can be programmed to
occur between setting the GO/DONE bit and the actual
start of the conversion.
The following steps should be followed to do 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 acquisition time (ADCON2)
Select A/D conversion clock (ADCON2)
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 (if required).
4.
Start conversion:
Set GO/DONE bit (ADCON0<1>)
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 registers (ADRESH:ADRESL);
clear ADIF bit, if required.
7.
For 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 2 TAD is
required before next acquisition starts.
FIGURE 2-2:
ANALOG INPUT MODEL
VAIN
CPIN
RS
ANx
5 pF
VDD
VT = 0.6V
ILEAKAGE
RIC
≤ 1k
Sampling
Switch
SS
RSS
CHOLD = 25 pF
VSS
Sampling Switch
12
3
4
(k
Ω)
VDD
±100 nA
Legend: CPIN
VT
ILEAKAGE
RIC
SS
CHOLD
= Input Capacitance
= Threshold Voltage
= Leakage Current at the pin due to
= Interconnect Resistance
= Sampling Switch
= Sample/Hold Capacitance (from DAC)
various junctions
= Sampling Switch Resistance
RSS
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PIC18F87J94-I/PT 制造商:Microchip Technology Inc 功能描述:80 PINS, 128KB FLASH, 4KB RAM, 16MIPS, NANOWATT XLP, LCD, US - Trays 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 128KB FLASH 80TQFP 制造商:Microchip Technology Inc 功能描述:80 pins, 128KB Flash, 4KB RAM, 16MIPS, nanoWatt XLP, LCD, USB, 80 TQFP 12x12x1mm
PIC18F87J94T-I/PT 制造商:Microchip Technology Inc 功能描述:80 PINS, 128KB FLASH, 4KB RAM, 16MIPS, NANOWATT XLP, LCD, US - Tape and Reel 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 128KB FLASH 80TQFP 制造商:Microchip Technology Inc 功能描述:8-bit Microcontrollers - MCU 80 pins, 128KB Flash 4KB RAM, 16MIPS
PIC18F87K22-E/PT 功能描述:8位微控制器 -MCU 128KB Flash,4KB RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F87K22-I/PT 功能描述:8位微控制器 -MCU 128kB Flash 4kB RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
PIC18F87K22-I/PT 制造商:Microchip Technology Inc 功能描述:MCU, 8BIT, 128K FLASH, XLP, 80TQFP
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