收藏本站
参数资料
型号： PIC18LF4431-I/PT
厂商： Microchip Technology
文件页数： 40/119页
文件大小： 0K
描述： IC PIC MCU FLASH 8KX16 44TQFP
产品培训模块： Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装： 160
系列： PIC® 18F
核心处理器： PIC
芯体尺寸： 8-位
速度： 40MHz
连通性： I²C，SPI，UART/USART
外围设备： 欠压检测/复位，LVD，电源控制 PWM，QEI，POR，PWM，WDT
输入/输出数： 36
程序存储器容量： 16KB（8K x 16）
程序存储器类型： 闪存
EEPROM 大小： 256 x 8
RAM 容量： 768 x 8
电压 - 电源 (Vcc/Vdd)： 2 V ~ 5.5 V
数据转换器： A/D 9x10b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 44-TQFP
包装： 托盘
产品目录页面： 645 (CN2011-ZH PDF)
2010 Microchip Technology Inc.
DS39616D-page 27
PIC18F2331/2431/4331/4431
2.3
Master Clear (MCLR) Pin
The MCLR pin provides two specific device
functions: Device Reset, and Device Programming
and Debugging. If programming and debugging are
not required in the end application, a direct
connection to VDD may be all that is required. The
addition of other components, to help increase the
application’s resistance to spurious Resets from
voltage
sags,
may
be
beneficial.
A
typical
configuration is shown in Figure 2-1. Other circuit
designs may be implemented, depending on the
application’s requirements.
During programming and debugging, the resistance
and capacitance that can be added to the pin must be
considered. Device programmers and debuggers drive
the MCLR pin. Consequently, specific voltage levels
(VIH and VIL) and fast signal transitions must not be
adversely affected. Therefore, specific values of R1
and C1 will need to be adjusted based on the
application and PCB requirements. For example, it is
recommended that the capacitor, C1, be isolated from
the MCLR pin during programming and debugging
operations by using a jumper (Figure 2-2). The jumper
is replaced for normal run-time operations.
Any components associated with the MCLR pin
should be placed within 0.25 inch (6 mm) of the pin.
FIGURE 2-2:
EXAMPLE OF MCLR PIN
CONNECTIONS
2.4
ICSP Pins
The PGC and PGD pins are used for In-Circuit Serial
Programming (ICSP) and debugging purposes. It
is recommended to keep the trace length between the
ICSP connector and the ICSP pins on the device as
short as possible. If the ICSP connector is expected to
experience an ESD event, a series resistor is recom-
mended, with the value in the range of a few tens of
ohms, not to exceed 100.
Pull-up resistors, series diodes, and capacitors on the
PGC and PGD pins are not recommended as they will
interfere with the programmer/debugger communica-
tions to the device. If such discrete components are an
application requirement, they should be removed from
the circuit during programming and debugging. Alter-
natively, refer to the AC/DC characteristics and timing
requirements information in the respective device
Flash programming specification for information on
capacitive loading limits and pin input voltage high (VIH)
and input low (VIL) requirements.
For device emulation, ensure that the “Communication
Channel Select” (i.e., PGCx/PGDx pins) programmed
into the device matches the physical connections for
the ICSP to the Microchip debugger/emulator tool.
For
more
information
on
available
Microchip
development tools connection requirements, refer to
Section 25.0 “Development Support”
.
Note 1:
R1
10 k is recommended. A suggested
starting value is 10 k
. Ensure that the
MCLR pin VIH and VIL specifications are met.
2:
R2
470 will limit any current flowing into
MCLR from the external capacitor, C, in the
event of MCLR pin breakdown, due to
Electrostatic Discharge (ESD) or Electrical
Overstress (EOS). Ensure that the MCLR pin
VIH and VIL specifications are met.
C1
R2
R1
VDD
MCLR
PIC18FXXXX
JP
相关PDF资料
PDF描述
PIC16C73B-20I/SP IC MCU OTP 4KX14 A/D PWM 28DIP
DSPIC33FJ128GP804-I/PT IC DSPIC MCU/DSP 128K 44TQFP
PIC18LF2525-I/SO IC MCU FLASH 24KX16 28SOIC
PIC16LF84-04I/P IC MCU FLASH 1KX14 EE 18DIP
PIC16C64A-04/P IC MCU OTP 2KX14 PWM 40DIP
相关代理商/技术参数
参数描述
PIC18LF4431T-I/ML 功能描述:8位微控制器 -MCU 16KB 768 RAM 34I/O 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
PIC18LF4431T-I/PT 功能描述:8位微控制器 -MCU 16KB 768 RAM 34I/O 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
PIC18LF4439-I/ML 功能描述:8位微控制器 -MCU 12KB 640 RAM 32I/O 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
PIC18LF4439-I/P 功能描述:8位微控制器 -MCU 12KB 640 RAM 32I/O 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
PIC18LF4439-I/PT 功能描述:8位微控制器 -MCU 12KB 640 RAM 32I/O 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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*