AT43USB325E-AU Atmel, AT43USB325E-AU Datasheet - Page 6

• Manufacturer Part Number: AT43USB325E-AU
• Description: IC USB KEYBOARD CTRLR 64LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB325E-AU

• 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: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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