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參數(shù)資料
| 型號(hào)： | PIC16C715 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 8-Bit CMOS Microcontroller with A/D Converter(每個(gè)I/O口有25mA驅(qū)動(dòng)/吸收電流，微控制器) |
| 中文描述： | 8位CMOS微控制器與A / D轉(zhuǎn)換器（每個(gè)的I / O口有25毫安驅(qū)動(dòng)/吸收電流，微控制器） |
| 文件頁(yè)數(shù)： | 23/120頁(yè) |
| 文件大?。?/td> | 764K |
| 代理商： | PIC16C715 |
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1996 Microchip Technology Inc.
Advance Information
DS30560A-page 23
PIC16C715
5.0
I/O PORTS
Some pins for these I/O ports are multiplexed with an
alternate function for the peripheral features on the
device. In general, when a peripheral is enabled, that
pin may not be used as a general purpose I/O pin.
5.1
PORTA is a 5-bit latch.
The RA4/T0CKI pin is a Schmitt Trigger input and an
open drain output. All other RA port pins have TTL input
levels and full CMOS output drivers. All pins have data
direction bits (TRIS registers) which can configure
these pins as output or input.
Setting a TRISA register bit puts the corresponding out-
put driver in a hi-impedance mode. Clearing a bit in the
TRISA register puts the contents of the output latch on
the selected pin(s).
Reading the PORTA register reads the status of the
pins whereas writing to it will write 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 modified, and then written to the port
data latch.
PORTA and TRISA Registers
Pin RA4 is multiplexed with the Timer0 module clock
input to become the RA4/T0CKI pin.
Other PORTA pins are multiplexed with analog inputs
and analog V
REF
input. The operation of each pin is
selected by clearing/setting the control bits in the
ADCON1 register (A/D Control Register1).
The TRISA register controls the direction of the RA
pins, even when they are being used as analog inputs.
The user must ensure the bits in the TRISA register are
maintained set when using them as analog inputs.
EXAMPLE 5-1:
INITIALIZING PORTA
CLRF PORTA ; Initialize PORTA by
; clearing output
; data latches
BSF STATUS, RP0 ; Select Bank 1
MOVLW 0xCF ; Value used to
; initialize data
; direction
MOVWF TRISA ; Set RA<3:0> as inputs
; RA<4> as outputs
Note:
On a Power-on Reset, these pins are con-
figured as analog inputs and read as '0'.
FIGURE 5-1:
BLOCK DIAGRAM OF RA3:RA0
Data bus
WR PORT
WR TRIS
RD PORT
Data Latch
TRIS Latch
P
V
SS
I/O pin
To A/D Converter
Note: I/O pin has protection diodes to V
DD
and V
SS
.
Q
D
Q
CK
Q
D
Q
CK
EN
Q
D
EN
N
Analog
input
mode
TTL
input
buffer
V
DD
RD TRIS
This document was created with FrameMaker 4 0 4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC16C715/JW | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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 |
| PIC16C715-04/P | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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 |
| PIC16C715-04/P | 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU 16C715 DIP18 |
| PIC16C715-04/P | 制造商:Microchip Technology Inc 功能描述:Microcontroller IC Number of I/Os:13 |
| PIC16C715-04/SO | 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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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