參數(shù)資料
型號(hào)： PIC14000-04I/SP
廠商： Microchip Technology
文件頁數(shù)： 72/153頁
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
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 25
PIC14000
5.0
I/O PORTS
The PIC14000 has three ports, PORTA, PORTC and
PORTD, described in the following paragraphs.
Generally, PORTA is used as the analog input port.
PORTC is used for general purpose I/O and for host
communication. PORTD provides additional I/O lines.
Four lines of PORTD may function as analog inputs.
5.1
PORTA and TRISA
PORTA is a 4-bit wide port with data register located at
location 05h and corresponding data direction register
(TRISA) at 85h. PORTA can operate as either
analog inputs for the internal A/D converter or as
general purpose digital I/O ports. These inputs are
Schmitt Triggers when used as digital inputs, and have
CMOS drivers as outputs.
PORTA pins are multiplexed with analog inputs.
ADCON1<1:0> bits control whether these pins are
analog or digital as shown in Section 8.7. When cong-
ured to the digital mode, reading the PORTA register
reads the status of the pins whereas writing to it will
write to the port latch. When selected as an analog
input, these pins will read as ‘0’s.
The TRISA register controls the direction of the PORTA
pins, even when they are being used as analog inputs.
The user must make sure to keep the pins congured
as inputs when using them as analog inputs. A ‘1’ in
each location congures the corresponding port pin as
an input. This register resets to all ‘1’s, meaning all
PORTA pins are initially inputs. The data register
should be initialized prior to conguring the port as out-
PORTA inputs go through a Schmitt Trigger AND gate
that is disabled when the input is in analog mode. Refer
Note that bits RA<7:4> are unimplemented and always
read as ‘0’. Unused inputs should not be left oating to
avoid leakage currents. All pins have input protection
diodes to VDD and VSS.
EXAMPLE 5-1:
INITIALIZING PORTA
Note:
On Reset, PORTA is congured as analog
inputs
CLRF
PORTA
;Initialize PORTA by setting
;output data latches
BSF
STATUS, RP0
;Select Bank1
MOVLW 0x0F
;Value used to initialize
;data direction
MOVWF TRISA
;Set RA<3:0> as inputs
FIGURE 5-1:
PORTA BLOCK DIAGRAM
D
Q
CK Q
D
Q
CK Q
D
Q
EN
Data
Bus
Write
PORTA
Write
TRISA
Read
TRISA
Read
PORTA
To A/D Converter
Note: I/O pins have protection diodes to VDD and VSS.
P
N
I/O
Pin
VSS
VDD
Schmitt Trigger
Analog Input Mode
Input Buffer
This document was created with FrameMaker404
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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
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