參數(shù)資料
型號： PIC18F87J11-I/PT
廠商： Microchip Technology
文件頁數(shù)： 62/107頁
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 64KX16 80TQFP
產(chǎn)品培訓模塊： Asynchronous Stimulus
PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標準包裝： 119
系列： PIC® 18F
核心處理器： PIC
芯體尺寸： 8-位
速度： 48MHz
連通性： EBI/EMI，I²C，SPI，UART/USART
外圍設備： 欠壓檢測/復位，LVD，POR，PWM，WDT
輸入/輸出數(shù)： 68
程序存儲器容量： 128KB（64K x 16）
程序存儲器類型： 閃存
RAM 容量： 3930 x 8
電壓 - 電源 (Vcc/Vdd)： 2 V ~ 3.6 V
數(shù)據(jù)轉換器： A/D 15x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 80-TQFP
包裝： 托盤
產(chǎn)品目錄頁面： 644 (CN2011-ZH PDF)
配用： DV164136-ND - DEVELOPMENT KIT FOR PIC18
AC162091-ND - HEADER MPLAB ICD2 18F87J11 64/80
MA180020-ND - MODULE PLUG-IN HPC EXPL 18F87J11
AC164328-ND - MODULE SKT FOR 80TQFP
PIC18F87J11 FAMILY
DS39778E-page 58
2007-2012 Microchip Technology Inc.
A CM Reset behaves similarly to a Master Clear Reset,
RESET
instruction, WDT time-out or Stack Event
Resets. As with all hard and power Reset events, the
device Configuration Words are reloaded from the
Flash Configuration Words in program memory as the
device restarts.
5.6
Power-up Timer (PWRT)
PIC18F87J11 family devices incorporate an on-chip
Power-up Timer (PWRT) to help regulate the Power-on
Reset process. The PWRT is always enabled. The
main function is to ensure that the device voltage is
stable before code is executed.
The Power-up Timer (PWRT) of the PIC18F87J11 fam-
ily devices is an 11-bit counter which uses the INTRC
source as the clock input. This yields an approximate
time interval of 2048 x 32
s = 66 ms. While the PWRT
is counting, the device is held in Reset.
The power-up time delay depends on the INTRC clock
and will vary from chip-to-chip due to temperature and
process variation. See DC Parameter 33 for details.
5.6.1
TIME-OUT SEQUENCE
If enabled, the PWRT time-out is invoked after the POR
pulse has cleared. The total time-out will vary based on
the status of the PWRT. Figure 5-3, Figure 5-4,
and
all
depict
time-out
sequences on power-up with the Power-up Timer
enabled.
Since the time-outs occur from the POR pulse and if
MCLR is kept low long enough, the PWRT will expire.
Bringing MCLR high will begin execution immediately
(Figure 5-5). This is useful for testing purposes, or to
synchronize more than one PIC18FXXXX device
operating in parallel.
TABLE 5-1:
TIME-OUT IN VARIOUS SITUATIONS
FIGURE 5-3:
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD, VDD RISE < TPWRT)
Oscillator
Configuration
Power-up(2) and Brown-out Reset
Exit from
Power-Managed Mode
PWRTEN = 0
PWRTEN = 1
HSPLL
66 ms(1) + 1024 TOSC + 2 ms(2)
1024 TOSC + 2 ms(2)
HS, XT, LP
66 ms(1) + 1024 TOSC
1024 TOSC
EC, ECIO
66 ms(1)
——
RC, RCIO
66 ms(1)
——
INTIO1, INTIO2
66 ms(1)
——
Note 1:
66 ms (65.5 ms) is the nominal Power-up Timer (PWRT) delay.
2:
2 ms is the nominal time required for the PLL to lock.
TPWRT
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
INTERNAL RESET
相關PDF資料
PDF描述
PIC18F87J50-I/PT IC PIC MCU FLASH 64KX16 80TQFP
PIC18F87J72T-I/PT IC MCU 8BIT 128KB FLASH 80TQFP
PIC18F87J90-I/PT IC PIC MCU FLASH 128KB 80-TQFP
PIC18F87K22-I/PTRSL MCU PIC 128K FLASH XLP 80TQFP
PIC18F97J60-I/PF IC PIC MCU FLASH 65KX16 100TQFP
相關代理商/技術參數(shù)
參數(shù)描述
PIC18F87J11T-I/PT 功能描述:8位微控制器 -MCU 128KB Flash 3936bytes RAM 67 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC18F87J50-I/PT 功能描述:8位微控制器 -MCU 128KB Flash 3936 bytes RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC18F87J50T-I/PT 功能描述:8位微控制器 -MCU 128KB FLSH 3936B RAM USB 2.0 nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC18F87J60-I/PT 功能描述:8位微控制器 -MCU 128KB FL 12KB RAM 10BASE-T RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC18F87J60T-I/PT 功能描述:8位微控制器 -MCU 128KB FL 12KB RAM 10BASE-T RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*