- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄3895 > PIC16F57-I/SO (Microchip Technology)IC MCU FLASH 2KX12 28SOIC PDF資料下載
參數(shù)資料
| 型號(hào)： | PIC16F57-I/SO |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 22/88頁(yè) |
| 文件大小： | 0K |
| 描述： | IC MCU FLASH 2KX12 28SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 標(biāo)準(zhǔn)包裝： | 27 |
| 系列： | PIC® 16F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 20MHz |
| 外圍設(shè)備： | POR，WDT |
| 輸入/輸出數(shù)： | 20 |
| 程序存儲(chǔ)器容量： | 3KB（2K x 12） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 72 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2 V ~ 5.5 V |
| 振蕩器型： | 外部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 638 (CN2011-ZH PDF) |
| 配用： | AC164002-ND - MODULE SKT PROMATEII 18/28SOIC |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)當(dāng)前第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)
2007 Microchip Technology Inc.
DS41213D-page 27
PIC16F5X
5.2
Device Reset Timer (DRT)
The Device Reset Timer (DRT) provides an 18 ms
nominal time-out on Reset regardless of the oscillator
mode used. The DRT operates on an internal RC
oscillator. The processor is kept in Reset as long as the
DRT is active. The DRT delay allows VDD to rise above
VDD min. and for the chosen oscillator to stabilize.
Oscillator circuits, based on crystals or ceramic resona-
tors, require a certain time after power-up to establish
a stable oscillation. The on-chip DRT keeps the device
in a Reset condition for approximately 18 ms after the
voltage on the MCLR/VPP pin has reached a logic high
(VIH) level. Thus, external RC networks connected to
the MCLR input are not required in most cases,
allowing for savings in cost-sensitive and/or space
restricted applications.
The device Reset time delay will vary from chip-to-chip
due to VDD, temperature and process variation. See
AC parameters for details.
The DRT will also be triggered upon a Watchdog Timer
time-out. This is particularly important for applications
using the WDT to wake the PIC16F5X from Sleep
mode automatically.
5.3
Reset on Brown-Out
A Brown-out is a condition where device power (VDD)
dips below its minimum value, but not to zero, and then
recovers. The device should be reset in the event of a
Brown-out.
To reset PIC16F5X devices when a Brown-out occurs,
external Brown-out protection circuits may be built, as
shown in Figure 5-6, Figure 5-7 and Figure 5-8.
FIGURE 5-6:
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
FIGURE 5-7:
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
FIGURE 5-8:
EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 3
This circuit will activate Reset when VDD goes below
Vz + 0.7V (where Vz = Zener voltage).
33k
10k
40k
VDD
MCLR
PIC16F5X
VDD
Q1
This brown-out circuit is less expensive, although
less accurate. Transistor Q1 turns off when VDD is
below a certain level such that:
VDD
R1
R1 + R2
= 0.7V
R2
40k
VDD
MCLR
PIC16F5X
R1
Q1
VDD
This
brown-out
protection
circuit
employs
Microchip Technology’s MCP809 microcontroller
supervisor. The MCP8XX and MCP1XX families
of supervisors provide push-pull and open collec-
tor outputs with both “active-high and active-low”
Reset pins. There are 7 different trip point
selections to accommodate 5V and 3V systems.
MCLR
PIC16F5X
VDD
VSS
RST
MCP809
VDD
Bypass
Capacitor
VDD
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PIC12F1501-I/MC | IC MCU 8BIT 1.75KB FLASH 8-DFN |
| PIC12F1501-I/MF | IC MCU 8BIT 1.75KB FLASH 8-DFN |
| PIC12F510-I/MC | IC PIC MCU FLASH 1024X12 8DFN |
| PIC12F629T-I/MF | IC MCU CMOS 8BIT 1K FLASH 8-DFN |
| PIC12LF1501-E/MS | IC MCU 8BIT 1.75KB FLASH 8MSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC16F57T-E/SO | 功能描述:8位微控制器 -MCU 3KB 72 RAM 20 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| PIC16F57T-E/SS | 功能描述:8位微控制器 -MCU 3KB 72 RAM 20 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| PIC16F57T-I/ML | 制造商:Microchip Technology Inc 功能描述:28 PIN, 3KB STD FLASH, 72 RAM, 20 I/O - Tape and Reel |
| PIC16F57T-I/SO | 功能描述:8位微控制器 -MCU 3KB 72 RAM 20 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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(fēng)格:SMD/SMT |
| PIC16F57T-I/SO-CUT TAPE | 制造商:Microchip 功能描述:PIC16 Series 72 B RAM 3 kB Flash 8-Bit CMOS Microcontroller - SOIC-28 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。