參數(shù)資料
型號(hào): AT89C5131A-RDTIL
廠商: Atmel
文件頁(yè)數(shù): 62/185頁(yè)
文件大小: 0K
描述: IC 8051 MCU FLASH 32K USB 64VQFP
標(biāo)準(zhǔn)包裝: 160
系列: AT89C513x
核心處理器: C52X2
芯體尺寸: 8-位
速度: 48MHz
連通性: I²C,SPI,UART/USART,USB
外圍設(shè)備: LED,POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
EEPROM 大?。?/td> 4K x 8
RAM 容量: 1.25K x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 3.6 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-LQFP
包裝: 托盤(pán)
配用: AT89STK-10-ND - KIT EVAL APPL MASS STORAGE
AT89STK-05-ND - KIT STARTER FOR AT89C5131
其它名稱(chēng): AT89C5131-RDTIL-ND
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dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04
DS70318F-page 154
2008-2012 Microchip Technology Inc.
10.2
Open-Drain Configuration
In addition to the PORT, LAT and TRIS registers for
data control, some digital-only port pins can also be
individually configured for either digital or open-drain
output. This is controlled by the Open-Drain Control
register, ODCx, associated with each port. Setting any
of the bits configures the corresponding pin to act as an
open-drain output.
The open-drain feature allows the generation of
outputs higher than VDD (for example, 5V) on any
desired 5V tolerant pins by using external pull-up
resistors. The maximum open-drain voltage allowed is
the same as the maximum VIH specification.
Refer to “Pin Diagrams” for the available pins and
their functionality.
10.3
Configuring Analog Port Pins
The ADPCFG and TRIS registers control the operation
of the Analog-to-Digital (A/D) port pins. The port pins
that are to function as analog inputs must have their
corresponding TRIS bit set (input). If the TRIS bit is
cleared (output), the digital output level (VOH or VOL)
will be converted.
The ADPCFG register has a default value of 0x0000;
therefore, all pins that share ANx functions are analog
(not digital) by default.
When the PORT register is read, all pins configured as
analog input channels will read as cleared (a low level).
Pins configured as digital inputs will not convert an
analog input. Analog levels on any pin defined as a
digital input (including the ANx pins) can cause the
input buffer to consume current that exceeds the
device specifications.
10.4
I/O Port Write/Read Timing
One instruction cycle is required between a port direction
change or port write operation and a read operation of
the same port. Typically, this instruction would be a NOP.
An example is shown in Example 10-1.
10.5
Input Change Notification
The input change notification function of the I/O
ports
allows
the
dsPIC33FJ06GS101/X02
and
dsPIC33FJ16GSX02/X04 devices to generate interrupt
requests
to
the
processor
in
response
to
a
Change-Of-State (COS) on selected input pins. This
feature can detect input Change-Of-States even in
Sleep mode, when the clocks are disabled. Depending
on the device pin count, up to 30 external signals (CNx
pin) can be selected (enabled) for generating an
interrupt request on a Change-Of-State.
Four control registers are associated with the CN
module. The CNEN1 and CNEN2 registers contain the
interrupt enable control bits for each of the CN input
pins. Setting any of these bits enables a CN interrupt
for the corresponding pins.
Each CN pin also has a weak pull-up connected to it.
The pull-ups act as a current source connected to the
pin, and eliminate the need for external resistors when
the push button or keypad devices are connected. The
pull-ups are enabled separately using the CNPU1 and
CNPU2 registers, which contain the control bits for
each of the CN pins. Setting any of the control bits
enables the weak pull-ups for the corresponding pins.
EQUATION 10-1:
PORT WRITE/READ EXAMPLE
Note:
Pull-ups
on
change
notification
pins
should always be disabled when the port
pin is configured as a digital output.
MOV
0xFF00, W0
; Configure PORTB<15:8> as inputs
MOV
W0, TRISBB
; and PORTB<7:0> as outputs
NOP
; Delay 1 cycle
BTSS
PORTB, #13
; Next Instruction
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AT89C5131A-RDTIM 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Flash Microcontroller with Full Speed USB Device
AT89C5131A-RDTUL 功能描述:8位微控制器 -MCU 32K Flash 3V USB 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
AT89C5131A-RDTUM 功能描述:8位微控制器 -MCU C5130A 32K Flash 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
AT89C5131A-RDTUM 制造商:Atmel Corporation 功能描述:IC 8BIT MCU C51/C251 48MHZ 64-VQFP
AT89C5131A-S3SIL 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Flash Microcontroller with Full Speed USB Device