- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄368026 > PIC27CR43 (Microchip Technology Inc.) High-Performance 8-Bit CMOS EPROM/ROM Microcontroller(每個(gè)I/O口有20mA吸收,35mA驅(qū)動(dòng),4K位PROM，微控制器) PDF資料下載
參數(shù)資料
| 型號(hào)： | PIC27CR43 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | High-Performance 8-Bit CMOS EPROM/ROM Microcontroller(每個(gè)I/O口有20mA吸收,35mA驅(qū)動(dòng),4K位PROM，微控制器) |
| 中文描述： | 高性能的8位CMOS存儲(chǔ)器/ ROM的微控制器（每個(gè)的I / O口有20mA的吸收，35毫安驅(qū)動(dòng)，4K的位胎膜早破，微控制器） |
| 文件頁(yè)數(shù)： | 15/241頁(yè) |
| 文件大?。?/td> | 1548K |
| 代理商： | PIC27CR43 |
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)當(dāng)前第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)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)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)
1996 Microchip Technology Inc.
DS30412B-page 15
PIC17C4X
4.0
RESET
The PIC17CXX differentiates between various kinds of
reset:
Power-on Reset (POR)
MCLR reset during normal operation
WDT Reset (normal operation)
Some registers are not affected in any reset condition;
their status is unknown on POR and unchanged in any
other reset. Most other registers are forced to a “reset
state” on Power-on Reset (POR), on MCLR or WDT
Reset and on MCLR reset during SLEEP. They are not
affected by a WDT Reset during SLEEP, since this reset
is viewed as the resumption of normal operation. The
TO and PD bits are set or cleared differently in different
reset situations as indicated in Table 4-3. These bits are
used in software to determine the nature of reset. See
Table 4-4 for a full description of reset states of all reg-
isters.
A simplified block diagram of the on-chip reset circuit is
shown in Figure 4-1.
Note:
While the device is in a reset state, the
internal phase clock is held in the Q1 state.
Any processor mode that allows external
execution will force the RE0/ALE pin as a
low output and the RE1/OE and RE2/WR
pins as high outputs.
4.1
Power-on Reset (POR), Power-up
Timer (PWRT), and Oscillator Start-up
Timer (OST)
4.1.1
POWER-ON RESET (POR)
The Power-on Reset circuit holds the device in reset
until V
DD
is above the trip point (in the range of 1.4V -
2.3V). The PIC17C42 does not produce an internal
reset when V
DD
declines. All other devices will produce
an internal reset for both rising and falling V
advantage of the POR, just tie the MCLR/V
directly (or through a resistor) to V
external RC components usually needed to create
Power-on Reset. A minimum rise time for V
required. See Electrical Specifications for details.
DD
. To take
PP
pin
DD
. This will eliminate
DD
is
4.1.2
POWER-UP TIMER (PWRT)
The Power-up Timer provides a fixed 96 ms time-out
(nominal) on power-up. This occurs from rising edge of
the POR signal and after the first rising edge of MCLR
(detected high). The Power-up Timer operates on an
internal RC oscillator. The chip is kept in RESET as
long as the PWRT is active. In most cases the PWRT
delay allows the V
DD
to rise to an acceptable level.
The power-up time delay will vary from chip to chip and
to V
DD
and temperature. See DC parameters for
details.
FIGURE 4-1:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
S
R
Q
External
Reset
MCLR
V
DD
OSC1
WDT
Module
V
DD
rise
detect
OST/PWRT
On-chip
RC OSC
WDT
Time_Out
Reset
Power_On_Reset
OST
10-bit Ripple counter
PWRT
Chip_Reset
10-bit Ripple counter
Power_Up
(Enable the PWRT timer
only during Power_Up)
(Power_Up + Wake_Up) (XT + LF)
(Enable the OST if it is Power_Up or Wake_Up
from SLEEP and OSC type is XT or LF)
E
E
This RC oscillator is shared with the WDT
when not in a power-up sequence.
This document was created with FrameMaker 4 0 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PIC17C752 | 64/68 Pin 8 Bit High-Performance 8-Bit CMOS EPROM/ROM Microcontroller(驅(qū)動(dòng)/吸收電流高，4路捕捉，3路PWM) |
| PIC17C756 | 64/68 Pin 8 Bit High-Performance 8-Bit CMOS EPROM/ROM Microcontroller(驅(qū)動(dòng)/吸收電流高，4路捕捉，3路PWM的微控制器) |
| pic17c756a | 64/68-Pin 8-Bit OTP High-Performance Microcontroller(具ADC的8位CMOS微控制器) |
| PIC17FR42 | High-Performance 8-Bit CMOS FlexROM Microcontroller(每個(gè)I/O口有25mA驅(qū)動(dòng)/吸收電流,并行從動(dòng)口,2路捕捉/PWM的微控制器) |
| PIC17FR43 | High-Performance 8-Bit CMOS FlexROM Microcontroller(每個(gè)I/O口有25mA驅(qū)動(dòng)/吸收電流,并行從動(dòng)口,2路捕捉/PWM的微控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC-28041TM2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| PIC-28042TM2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| PIC-28043TM2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| PIC-28044TM2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| PIC-28045TM2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。