參數(shù)資料
型號(hào): PIC14000-04I/SP
廠商: Microchip Technology
文件頁(yè)數(shù): 116/153頁(yè)
文件大?。?/td> 0K
描述: IC MCU OTP 4KX14 A/D 28DIP
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 15
系列: PIC® 14
核心處理器: PIC
芯體尺寸: 8-位
速度: 4MHz
連通性: I²C
外圍設(shè)備: POR,溫度傳感器,WDT
輸入/輸出數(shù): 20
程序存儲(chǔ)器容量: 7KB(4K x 14)
程序存儲(chǔ)器類型: OTP
RAM 容量: 192 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: 斜率 A/D
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-DIP(0.300",7.62mm)
包裝: 管件
配用: ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
ICE2000-ND - EMULATOR MPLAB-ICE 2000 POD
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)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)當(dāng)前第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)
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 65
PIC14000
9.0
OTHER ANALOG MODULES
The PIC14000 has additional analog modules for
mixed signal applications. These include:
bandgap voltage reference
comparators with programmable references
internal temperature sensor
voltage regulator control
9.1
Bandgap Voltage Reference
The bandgap reference circuit is used to generate a
1.2V nominal stable voltage reference for the A/D and
the low-voltage detector. The bandgap reference is
channel 4 of the analog mux. The bandgap reference
voltage is stored in the calibration space EPROM
(See Table 4-2). To enable the bandgap reference
REFOFF (SLPCON<5>) must be cleared.
9.2
Level-Shift Networks
The RA1/AN1 and RA5/AN5 pins have an internal
level-shift network. A current source and resistor are
used to bias the pin voltage by about +0.5V into a range
usable by the A/D converter. The nominal value of bias
current source is 5
A and the resistor is 100 kohms.
The level-shift function can be turned on by clearing the
LSOFF bit (SLPCON<4>) to '0'.
Note:
The minimum voltage permissible at the
RA1/AN1 and RA5/AN5 pins is -0.3V. The
input protection diodes will begin to turn
on beyond -0.3V, introducing signicant
errors in the A/D readings. Under no con-
ditions should the pin voltage fall below
-0.5V.
9.2.1
ZEROING/FILTERING SWITCHES
The RA1/AN1 and RA5/AN5 inputs also have a
matched pair of pass gates useful for current-measure-
ment applications. One gate is connected between the
pin and the level-shift network. The second pass gate
is connected to ground as shown in Figure 9-1. By set-
ting the ADZERO bit (ADCON0<0>), a zero-current
condition is simulated. Subsequent A/D readings are
calculated relative to this zero count from the A/D. This
zeroing of the current provides very high accuracies at
low current values where it is most needed.
For additional noise ltering or for capturing short dura-
tion periodic pulses, an optional lter capacitor may be
connected from the SUM pin to ground (this feature is
available for RA1/AN1 only). This forms an RC network
with the internal 100 kohm (nominal) bias resistor to act
as a low pass lter. The capacitor size can be adjusted
for the desired time constant.
A switch is included between the output from the
RA1/AN1 level-shift network and the SUM pin. This
switch is closed during A/D sampling periods and is
automatically opened during a zeroing operation (if
ADZERO = '1'). If not required in the system, this pin
should be left oating (not connected).
Setting the LSOFF bit (SLPCON<4>) disables the
level-shift networks, so the RA1/AN1 and RA5/AN5
pins can continue to be used as general-purpose ana-
log inputs.
This document was created with FrameMaker404
相關(guān)PDF資料
PDF描述
C8051F231 IC 8051 MCU 8K FLASH 32LQFP
C8051F230 IC 8051 MCU 8K FLASH 48TQFP
C8051F226 IC 8051 MCU 8K FLASH 48TQFP
1-100526-3 Z-PACK F.CODING KEY
1-100526-2 Z-PACK F.CODING KEY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC14000-20/SO 功能描述:8位微控制器 -MCU 7KB 192 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
PIC14000-20/SP 功能描述:8位微控制器 -MCU 7KB 192 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
PIC14000-20/SS 功能描述:8位微控制器 -MCU 7KB 192 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
PIC14000-20I/P 制造商:Microchip Technology Inc 功能描述:MCU 8BIT PIC14 RISC 7KB EPROM 5V - Bulk
PIC14000-20I/SO 功能描述:8位微控制器 -MCU 7KB 192 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