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| 型號： | PIC16F84A-04E/SO |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 16/81頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU CMOS 4MHZ 1K FLASH 18SOIC |
| 標準包裝： | 42 |
| 系列： | PIC® 16F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 4MHz |
| 外圍設(shè)備： | POR，WDT |
| 輸入/輸出數(shù)： | 13 |
| 程序存儲器容量： | 1.75KB（1K x 14） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大小： | 64 x 8 |
| RAM 容量： | 68 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4 V ~ 5.5 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 18-SOIC（0.295"，7.50mm 寬） |
| 包裝： | 管件 |
| 配用： | I3-DB16F84A-ND - BOARD DAUGHTER ICEPIC3 |
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2001 Microchip Technology Inc.
DS35007B-page 21
PIC16F84A
6.0
SPECIAL FEATURES OF THE
CPU
What
sets
a
microcontroller
apart
from
other
processors are special circuits to deal with the needs of
real time applications. The PIC16F84A has a host of
such features intended to maximize system reliability,
minimize
cost
through
elimination
of
external
components, provide power saving operating modes
and offer code protection. These features are:
OSC Selection
RESET
- Power-on Reset (POR)
- Power-up Timer (PWRT)
- Oscillator Start-up Timer (OST)
Interrupts
Watchdog Timer (WDT)
SLEEP
Code Protection
ID Locations
In-Circuit Serial Programming (ICSP)
The PIC16F84A has a Watchdog Timer which can be
shut-off only through configuration bits. It runs off its
own RC oscillator for added reliability. There are two
timers that offer necessary delays on power-up. One is
the Oscillator Start-up Timer (OST), intended to keep
the chip in RESET until the crystal oscillator is stable.
The other is the Power-up Timer (PWRT), which pro-
vides a fixed delay of 72 ms (nominal) on power-up
only. This design keeps the device in RESET while the
power supply stabilizes. With these two timers on-chip,
most applications need no external RESET circuitry.
SLEEP mode offers a very low current power-down
mode. The user can wake-up from SLEEP through
external RESET, Watchdog Timer Time-out or through
an interrupt. Several oscillator options are provided to
allow the part to fit the application. The RC oscillator
option saves system cost while the LP crystal option
saves power. A set of configuration bits are used to
select the various options.
Additional information on special features is available
in the PICmicro Mid-Range Reference Manual
(DS33023).
6.1
Configuration Bits
The configuration bits can be programmed (read as '0'),
or left unprogrammed (read as '1'), to select various
device configurations. These bits are mapped in
program memory location 2007h.
Address 2007h is beyond the user program memory
space and it belongs to the special test/configuration
memory space (2000h - 3FFFh). This space can only
be accessed during programming.
REGISTER 6-1:
PIC16F84A CONFIGURATION WORD
R/P-u
R/P-u R/P-u
R/P-u
R/P-u R/P-u R/P-u
R/P-u
CP
PWRTE WDTE
F0SC1
F0SC0
bit13
bit0
bit 13-4
CP: Code Protection bit
1
= Code protection disabled
0
= All program memory is code protected
bit 3
PWRTE: Power-up Timer Enable bit
1
= Power-up Timer is disabled
0
= Power-up Timer is enabled
bit 2
WDTE: Watchdog Timer Enable bit
1
= WDT enabled
0
= WDT disabled
bit 1-0
FOSC1:FOSC0: Oscillator Selection bits
11
= RC oscillator
10
= HS oscillator
01
= XT oscillator
00
= LP oscillator
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| PIC16F84A-04I/P | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz Ind Temp PDIP18 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 |
| PIC16F84A-04I/P | 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 16F84 DIP18 |
| PIC16F84A-04I/SO | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz Ind Temp SOIC18 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 |
| PIC16F84A-04I/SO | 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F84 SOIC18 |
| PIC16F84A-04I/SS | 功能描述:8位微控制器 -MCU 1.75KB 68 RAM 13 I/O 4MHz IndTemp SSOP20 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 |
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