- 您现在的位置：买卖IC网 > PDF目录3872 > PIC12C672-10/SM (Microchip Technology)IC MCU OTP 2KX14 A/D 8-SOIJ PDF资料下载
参数资料
| 型号： | PIC12C672-10/SM |
| 厂商： | Microchip Technology |
| 文件页数： | 84/129页 |
| 文件大小： | 0K |
| 描述： | IC MCU OTP 2KX14 A/D 8-SOIJ |
| 产品培训模块： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 标准包装： | 90 |
| 系列： | PIC® 12C |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 10MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 5 |
| 程序存储器容量： | 3.5KB（2K x 14） |
| 程序存储器类型： | OTP |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 5.5 V |
| 数据转换器： | A/D 4x8b |
| 振荡器型： | 内部 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 包装： | 管件 |
| 配用： | XLT08SO-1-ND - SOCKET TRANSITION 8SOIC 150/208 AC164312-ND - MODULE SKT FOR PM3 16SOIC ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING 309-1048-ND - ADAPTER 8-SOIC TO 8-DIP 309-1047-ND - ADAPTER 8-SOIC TO 8-DIP AC124001-ND - MODULE SKT PROMATEII 8DIP/SOIC |
| 其它名称： | PIC12C672-10/SMR PIC12C672-10/SMR-ND |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页当前第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页
PIC12C67X
DS30561B-page 58
1999 Microchip Technology Inc.
9.4
Power-on Reset (POR), Power-up
Timer (PWRT) and Oscillator Start-up
Timer (OST)
9.4.1
POWER-ON RESET (POR)
The on-chip POR circuit holds the chip in reset until
VDD has reached a high enough level for proper opera-
tion. To take advantage of the POR, just tie the MCLR
pin through a resistor to VDD. This will eliminate exter-
nal RC components usually needed to create a Power-
on Reset. A maximum rise time for VDD is specified.
See Electrical Specifications for details.
When the device starts normal operation (exits the
reset condition), device operating parameters (voltage,
frequency, temperature, ...) must be met to ensure
operation. If these conditions are not met, the device
must be held in reset until the operating conditions are
met.
For additional information, refer to Application Note
AN607, "
Power-up Trouble Shooting."
9.4.2
POWER-UP TIMER (PWRT)
The Power-up Timer provides a fixed 72 ms nominal
time-out on power-up only, from the POR. The Power-
up Timer operates on an internal RC oscillator. The
chip is kept in reset as long as the PWRT is active. The
PWRT’s time delay allows VDD to rise to an acceptable
level. A configuration bit is provided to enable/disable
the PWRT.
The power-up time delay will vary from chip to chip due
to VDD, temperature and process variation. See
9.4.3
OSCILLATOR START-UP TIMER (OST)
The Oscillator Start-up Timer (OST) provides 1024
oscillator cycle (from OSC1 input) delay after the
PWRT delay is over. This ensures that the crystal oscil-
lator or resonator has started and stabilized.
The OST time-out is invoked only for XT, LP and HS
modes and only on Power-on Reset or wake-up from
SLEEP.
9.4.4
TIME-OUT SEQUENCE
On power-up, the Time-out Sequence is as follows:
first, PWRT time-out is invoked after the POR time
delay has expired; then, OST is activated. The total
time-out will vary, based on oscillator configuration and
the status of the PWRT. For example, in RC mode with
the PWRT disabled, there will be no time-out at all.
sequences on power-up.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the time-outs will expire. Then
bringing MCLR high will begin execution immediately
(Figure 9-9). This is useful for testing purposes or to
synchronize more than one PIC12C67X device operat-
ing in parallel.
9.4.5
POWER CONTROL (PCON)/STATUS
REGISTER
The Power Control/Status Register, PCON (address
8Eh), has one bit. See Register 4-6 for register.
Bit1 is POR (Power-on Reset). It is cleared on a Power-
on Reset and is unaffected otherwise. The user sets
this bit following a Power-on Reset. On subsequent
resets, if POR is ‘0’, it will indicate that a Power-on
Reset must have occurred.
TABLE 9-4:
TIME-OUT IN VARIOUS SITUATIONS
TABLE 9-5:
STATUS/PCON BITS AND THEIR SIGNIFICANCE
Legend: u = unchanged, x = unknown.
Oscillator Configuration
Power-up
Wake-up from SLEEP
PWRTE = 0
PWRTE = 1
XT, HS, LP
72 ms + 1024TOSC
1024TOSC
INTRC, EXTRC
72 ms
—
POR
TO
PD
01
1
Power-on Reset
00
x
Illegal, TO is set on POR
0x
0
Illegal, PD is set on POR
10
u
WDT Reset
10
0
WDT Wake-up
1u
u
MCLR Reset during normal operation
11
0
MCLR Reset during SLEEP or interrupt wake-up from SLEEP
相关PDF资料 |
PDF描述 |
|---|---|
| PIC16LF628A-I/P | IC MCU FLASH 2KX14 EEPROM 18DIP |
| PIC18LF14K50-I/MQ | IC PIC MCU FLASH 768KX16 20-QFN |
| PIC16F1934-I/P | IC PIC MCU FLASH 256KX7 40-PDIP |
| PIC16CE623-04/P | IC MCU OTP 512X14 EE COMP 18DIP |
| PIC16F1939-I/PT | IC MCU 8BIT FLASH 44TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC12C672T | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter |
| PIC12C672T-04 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter |
| PIC12C672T-04/JM | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter |
| PIC12C672T-04/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit CMOS Microcontroller with A/D Converter |
| PIC12C672T-04/SM | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 6 I/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。