AT43USB325E-AC Atmel, AT43USB325E-AC Datasheet - Page 6
AT43USB325E-AC
Manufacturer Part Number
AT43USB325E-AC
Description
IC USB KEYBOARD CTRLR HUB 64LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB325E-AC.pdf
(109 pages)
Specifications of AT43USB325E-AC
Applications
Keyboard Controller
Core Processor
AVR
Program Memory Type
SRAM (16 kB)
Controller Series
AT43USB
Ram Size
512 x 8
Interface
SPI, 3-Wire Serial
Number Of I /o
42
Voltage - Supply
4.4 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Figure 1-3.
6
AT43USB325
AT43USB325 Enhanced RISC Architecture with USB Keyboard Controller and Hub
Instruction
Instruction
Program
Register
Memory
Decoder
Control
8 x 16
Lines
Program
Counter
General-purpose
Status and
Registers
11 GPIO
Hub and
Function
32 x 8
Control
ALU
512 x 8
SRAM
Lines
USB
8 Strobe Inputs
Timer/Counter
Timer/Counter
4 LED Drives
20 Strobe
Watchdog
Interrupt
Outputs
Unit
Timer
8-bit
16-bit
3355C–USB–4/05
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