參數(shù)資料
型號(hào)： AT43USB325E-AU
廠商： ATMEL CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： Multimedia USB Keyboard Controller with Embedded Hub
中文描述： 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 1.40 MM HEIGHT, GREEN, PLASTIC, MS-026ACB, LQFP-64
文件頁(yè)數(shù)： 55/109頁(yè)
文件大?。?/td> 643K
代理商： AT43USB325E-AU
55
3355C–USB–4/05
AT43USB325
7.
I/O Ports
All GPIO ports have true Read-Modify-Write functionality when used as general digital I/O ports.
This means that the direction of one port pin can be changed without unintentionally changing
the direction of any other pin with the SBI and CBI instructions. The same applies for changing
drive value if configured as output or enabling/disabling of pull-up resistors if configured as input.
The keyboard matrix strobe output pins, PA[0:7], PB[0:7] and PE[0:3] have controlled slope driv-
ers. With a load of 100 pF, the output fall time ranges between 75 ns and 300 ns. The keyboard
matrix strobe input pins, PC[0:7] have When the FE3 IMSK bit is set (1), the Function End-point
3 Interrupt is masked.
PE[4:7] have 5V tolerant outputs and each has a built-in series resistor of 330
nominal value.
These output pins are designed for driving an LED connected to the 5V supply.
The dedicated functions are summarized in
Table 7-1
.
In the AT43USB325E Port F[0:3] are used as the SPI signals for the external serial EEPROM.
Once the data from the SEEPROM are loaded to the SRAM, Port F[1:3] become available as
GPIO pins. Only cycling the power to the chip off and on again will temporarily assign these pins
as EEPOM signals.
Table 7-1.
GPIO Function Assignments
Function
GPIO
Scan out[0:7]
PA[0:7]
Scan out[8:15]
PB[0:7]
Scan out[16:19]
PE[0:3]
Scan in[0:7]
PC[0:7]
LED drivers
PE[4:7]
EEPROM Interface
PF[1:3]
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB326 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB326_06 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub
AT43USB326-AC 功能描述:USB 接口集成電路 USB KEYBOARD F/LOGI- TECH - COM TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB326-AU 功能描述:USB 接口集成電路 USB KEYBOARD FOR LOGITECH - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB351M 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
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