參數(shù)資料
型號(hào)： AT43USB325E-AC
廠商： ATMEL CORP
元件分類： 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, PLASTIC, MS-026-ACB, LQFP-64
文件頁(yè)數(shù)： 4/109頁(yè)
文件大?。?/td> 643K
代理商： AT43USB325E-AC
4
3355C–USB–4/05
AT43USB325
1.3
Signal Description
Name
Type
Function
V
CC1, 2
Power Supply/Ground
5V Power Supply
CEXT1, 2
Output
External Capacitors for Internal Voltage Regulator
– A high quality 2.2μF capacitor must
be connected to CEXT1 and 0.33 μF to CEXT2 for proper operation of the chip.
V
SS1
,
2
Power Supply/Ground
Ground
XTAL1
Input
Oscillator Input
– Input to the inverting oscillator amplifier.
XTAL2
Output
Oscillator Output
– Output of the inverting oscillator amplifier.
LFT
Input
PLL Filter
– For proper operation of the PLL, this pin should be connected through a 0.01 μF
capacitor in parallel with a 100
resistor in series with a 0.1 μF capacitor to ground (VSS).
Both capacitors must be high quality ceramic.
DPO
Bi-directional
Upstream Plus USB I/O
– This pin should be connected to CEXT1 through an external
1.5 k
pull-up resistor. DP0 and DM0 form the differential signal pin pairs connected to the
Host Controller or an upstream Hub.
DMO
Bi-directional
Upstream Minus USB I/O
DP[2:5]
Bi-directional
Port Plus USB I/O
– Each of these pins should be connected to VSS through an external
15 k
resistor. DP[2:5] and DM[2:5] are the differential signal pin pairs to connect
downstream USB devices.
DM[2:5]
Bi-directional
Port Minus USB I/O
– Each of these pins should be connected to VSS through an external
15 k
resistor.
PA[0:7]
Bi-directional
Port A[0:7]
– Bi-directional 8-bit I/O port with controlled slew rate. These pins are used as
eight of the keyboard matrix column output strobes. PA[0:7] = COL[0:7].
Port B[0:7]
– Bi-directional 8-bit I/O port controlled slew rate. These pins are used
as the eight of the keyboard matrix column output strobes: PB[0:7] = COL[8:15].
PB0 has a dual function: the input to timer/counter0.
PB[0:7]
Bi-directional
PC[0:7]
Bi-directional
Port C[0:7]
– Bi-directional 8-bit I/O port with internal pull-ups. These pins are used as
keyboard matrix row input signals. PC[0:7] = ROW [0:7].
PD[0,1,3:7]
Bi-directional
Port D[0,1,3:7]
– Bi-directional I/O ports. Port D[1,4:7] have dual functions as shown below:
Port Pin
Alternate Function
PD1
T1, Timer/Counter1 External Input
PD3
INT1, External Interrupt Input 1
PD4
INTA, External Interrupt Input A
PD5
INTB, External Interrupt Input B
PD6
INTC, External Interrupt Input C
PD7
INTD, External Interrupt Input D
PE[0:3]
Bi-directional
Port E[0:3]
– Bi-directional I/O port with controlled slew rate which can be used as four
additional keyboard column output strobes, COL[16:19].
PE[4:7]
Bi-directional
PE[4:7]
– Bi-directional I/O port. PE[4:7] have built-in series limiting resistors and can be
used to drive LEDs directly
Port Pin
PB0
Alternate Function
T0, Timer/Counter0 external input
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB325E-AU 功能描述:USB 接口集成電路 USB KEYBOARD CONTROL w/HUB - IND TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB326_06 制造商:ATMEL 制造商全稱: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
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