AT43USB326-AU Atmel, AT43USB326-AU Datasheet - Page 10

• Manufacturer Part Number: AT43USB326-AU
• Description: IC USB KEYBOARD CTRLR 48LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB326-AU

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: Mask ROM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: USB
• Number Of I /o: 32
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10
AT43USB326
Table 2. SRAM Organization
I/O Registers
Register File
R30
R31
$00
$01
$3E
$3F
R0
R1
Data Address Space
USB Registers
Internal SRAM
$1FFE
$1FFF
$0000
$0001
$001E
$001F
$0020
$0021
$005E
$005F
$0060
$0061
$025E
$045F
$1F00
3313D–USB–04/06