參數(shù)資料
型號(hào): PIC16C782/JW
廠商: Microchip Technology
文件頁(yè)數(shù): 108/186頁(yè)
文件大?。?/td> 0K
描述: IC MCU EPROM 2KX14 COMP 20CDIP
標(biāo)準(zhǔn)包裝: 23
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 13
程序存儲(chǔ)器容量: 3.5KB(2K x 14)
程序存儲(chǔ)器類(lèi)型: EPROM,UV
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x8b; D/A 1x8b
振蕩器型: 內(nèi)部
工作溫度: 0°C ~ 70°C
封裝/外殼: 20-CDIP(0.300",7.62mm)窗口
包裝: 管件
配用: DVA16XP202-ND - ADAPTER DEVICE PIC16C781/782
DM163012-ND - BOARD DEMO PICDEM FOR 16C781/782
AC164028-ND - MODULE SKT PROMATEII 20SOIC/DIP
其它名稱(chēng): Q1137459
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PIC16C781/782
DS41171A-page 26
Preliminary
2001 Microchip Technology Inc.
3.2
PORTA and the TRISA Register
PORTA is an 8-bit wide, bi-directional port with the
exception of RA0, RA1 and RA5, which are inputs only.
The corresponding data direction register is TRISA.
Setting a TRISA bit (= 1) makes the corresponding
PORTA pin an input (i.e., disables the digital output).
Clearing a TRISA bit (= 0) makes the corresponding
PORTA pin an output (i.e., disables the digital output).
Reading the PORTA register reads the status of the
pins, whereas writing to it, writes to the port latch. All
write operations are read-modify-write operations.
Therefore, a write to a port implies that the port pins are
read, this value is then modified and written to the port
data latch.
Pins RA<3:0> are multiplexed with analog functions:
Analog inputs AN<3:0> to the A/D Converter.
VREF1 and VREF2 inputs to the comparators.
OPAMP inverting/non-inverting inputs.
Pins RA<7:4> are multiplexed with digital functions:
Pin RA4 is multiplexed with the TMR0 module
clock input.
Pin RA5 is multiplexed with the device RESET
(MCLR) and programming input (VPP) function.
Pins RA6 and RA7 are multiplexed with the
oscillator/clock I/O functions. RA6 can also be
configured as the TMR1 clock input.
PORTA has the following I/O characteristics:
RA0, RA1, and RA5 are input only.
RA4 is an open drain output. All other PORTA
pins have full CMOS buffer outputs.
All PORTA pins have Schmitt trigger inputs.
EXAMPLE 3-1:
INITIALIZING PORTA
;*
This code block will configure PORTA
;*
as follows
;*
RA<7:4>
digital outputs
;*
RA<3:2>
digital inputs
;*
RA<1:0>
analog inputs
;*
RB<3:0>
digital I/O
;*
Note 1: RB<3:0> configured as digital I/O
;*
Note 2: RA<7:6> availability depends on
;*
the oscillator selection
BANKSEL
PORTA
; Select Bank 0
CLRF
PORTA
; Preset PORTA data
;
reg
BANKSEL
TRISA
; Select Bank 1
MOVLW
B’00001111’; Digital I/O
;
config data
MOVWF
TRISA
; Configure PORTA
;
digital
MOVLW
B’00000011’; Analog I/O config
;
data
MOVWF
ANSEL
; Configure PORTA
;
analog
3.2.1
TRISA, ANSEL, AND CONTROL
PRECEDENCE
The ANSEL and TRISA registers are the primary soft-
ware controls for the configuration of PORTA pins.
TRISA bits tri-state the output drivers of PORTA, and
ANSEL register bits control the digital input buffers. It is
important to program both registers when configuring a
mixed signal port pin, as most peripherals cannot over-
ride the TRISA and ANSEL registers control. Even if a
peripheral has the ability to override control of the
TRISA and ANSEL registers, it is good programming
practice to program both registers appropriately.
There are specific cases in which the TRISA and
ANSEL registers can be overridden by a peripheral or
a configuration bit, see Figures 3-1 through 3-8 for
details.
Note:
When the analog peripherals are using any
of these pins as analog input/output, the
ANSEL register must have the proper
value to individually select the Analog
mode of the corresponding pins.
Note:
Crystal (LP, XT and HS) oscillator configu-
rations
use
pin
RA6/OSC2/CLKOUT/
T1CKI as OSC2. In these modes, setting
or clearing TRISA<6> will have no effect
and the pin will read as a zero (0).
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PIC16C782T-E/SO 功能描述:8位微控制器 -MCU w/Adv Analog 20MHz 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
PIC16C782T-E/SS 功能描述:8位微控制器 -MCU w/Adv Analog 20MHz 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
PIC16C782T-I/SO 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 16 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
PIC16C782T-I/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 16 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
PIC16C8404ISO 制造商:MICROCHIP 功能描述:New