AT43USB325E-AC datasheet, PDF - EEWORLD Datasheet

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AT43USB325E-AC: DescriptionMultimedia USB Keyboard Controller with Embedded Hub; CategoryThe embedded processor and controller Microcontrollers and processors; File Size636KB，109 Pages; ManufacturerAtmel (Microchip)

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AT43USB325E-AC Overview

Multimedia USB Keyboard Controller with Embedded Hub

AT43USB325E-AC Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Atmel (Microchip)
Parts packaging code	QFP
package instruction	LFQFP, QFP64,.47SQ,20
Contacts	64
Reach Compliance Code	unknow
Has ADC	NO
Address bus width
bit size	8
CPU series	AVR RISC
maximum clock frequency	6 MHz
DAC channel	NO
DMA channel	NO
External data bus width
JESD-30 code	S-PQFP-G64
JESD-609 code	e0
length	10 mm
Humidity sensitivity level	1
Number of I/O lines	39
Number of terminals	64
Maximum operating temperature	70 °C
Minimum operating temperature
PWM channel	YES
Package body material	PLASTIC/EPOXY
encapsulated code	LFQFP
Encapsulate equivalent code	QFP64,.47SQ,20
Package shape	SQUARE
Package form	FLATPACK, LOW PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)	225
power supply	5 V
Certification status	Not Qualified
RAM (bytes)	512
rom(word)	16384
ROM programmability	MROM
Maximum seat height	1.6 mm
speed	12 MHz
Maximum slew rate	40 mA
Maximum supply voltage	5.25 V
Minimum supply voltage	4.4 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	10 mm
uPs/uCs/peripheral integrated circuit type	MICROCONTROLLER, RISC
Base Number Matches	1

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Features

•

AVR

8-bit RISC Microcontroller with 83 ns Instruction Cycle Time

USB Hub with One Attached and Four External Ports

USB Keyboard Function with Four Programmable Endpoints

16 KB Program Memory, 512-Byte Data SRAM

32 x 8 General-purpose Working Registers

42 Programmable I/O Port Pins

Support for 20 x 8 Keyboard Matrix

Keyboard Scan Inputs with Pull-up Resistor

Four LED Driver Outputs

One 8-bit Timer/Counter with Separate Pre-scaler

One 16-bit Timer/Counter with Separate Pre-scaler and Dual 8-, 9- or 10-bit PWM

External and Internal Interrupt Sources

Programmable Watchdog Timer

6-MHz Oscillator with On-chip PLL

5V Operation with On-chip 3.3V Power Supply

64-lead LQFP Package

Multimedia

USB Keyboard

Controller with

Embedded Hub

AT43USB325

1. Description

The Atmel AT43USB325 is an 8-bit microcontroller based on the AVR RISC architec-

ture. By executing powerful instructions in a single clock cycle, the AT43USB325

achieves throughputs approaching 12 MIPS. The AVR core combines a rich instruc-

tion set with 32 general-purpose working registers. All 32 registers are directly

connected to the ALU allowing two independent registers to be accessed in one single

instruction executed in one clock cycle. The resulting architecture is more code effi-

cient while achieving throughputs up to ten times faster than conventional CISC

microcontrollers.

The AT43USB325 features an on-chip 16-Kbyte program memory and

512 bytes of data memory. It is supported by a standard set of peripherals such as

timer/counter modules, watchdog timer and internal and external interrupt sources.

The major peripheral included in the AT43USB325 is the USB Hub with an embedded

function and GPIO ports designed for use in a keyboard controller. The embedded

function has 4 endpoints that makes the AT43USB325 extremely suitable for key-

boards supporting the consumer page as described in the “USB Usage Tables”.

The AT43USB325 comes in two versions. The program memory of the

AT43USB325E is an SRAM that is automatically written from an external serial

EEPROM during power on. The AT43USB325M has a masked ROM program mem-

ory. The two versions are pin, function and binary compatible.

3355C–USB–4/05

AT43USB325E-AC Related Products

	AT43USB325E-AC	AT43USB325	AT43USB325E-AU	AT43USB325_05
Description	Multimedia USB Keyboard Controller with Embedded Hub	Multimedia USB Keyboard Controller with Embedded Hub	Multimedia USB Keyboard Controller with Embedded Hub	Multimedia USB Keyboard Controller with Embedded Hub

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