| Part Numbers | Manufacturer Name | Datasheet | Core Processor | Core Size | Speed | Connectivity | RAM Size | Number of I/O | Program Memory Size | Program Memory Type | EEPROM Size | Voltage - Supply (Vcc/Vdd) | Data Converters | Oscillator Type | Operating Temperature | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AT43USB325E-AU | ATMEL CORP | AVR | - | - | - | 512 x 8 | 42 | - | SRAM (16 kB) | - | 4.4 V ~ 5.25 V | - | - | -40°C ~ 85°C | 64-LQFP | |
| AT43USB355E-AU | ATMEL CORP | AVR | - | - | - | 1K x 8 | 27 | - | SRAM (24 kB) | - | 4.4 V ~ 5.25 V | - | - | -40°C ~ 85°C | 64-LQFP | |
| AT43USB326-AU | ATMEL CORP | AVR | - | - | - | 512 x 8 | 32 | - | Mask ROM (16 kB) | - | 4.4 V ~ 5.25 V | - | - | -40°C ~ 85°C | 48-LQFP | |
| AT43USB320A-AC | ATMEL CORP | AVR | - | - | - | 512 x 8 | 32 | - | - | - | 4.4 V ~ 5.25 V | - | - | 0°C ~ 70°C | 100-LQFP | |
| AT43USB325E-AC | ATMEL CORP | AVR | - | - | - | 512 x 8 | 42 | - | SRAM (16 kB) | - | 4.4 V ~ 5.25 V | - | - | 0°C ~ 70°C | 64-LQFP | |
| AT43USB326-AC | ATMEL CORP | AVR | - | - | - | 512 x 8 | 32 | - | Mask ROM (16 kB) | - | 4.4 V ~ 5.25 V | - | - | 0°C ~ 70°C | 48-LQFP | |
| AT43USB355E-AC | ATMEL CORP | AVR | - | - | - | 1K x 8 | 27 | - | SRAM (24 kB) | - | 4.4 V ~ 5.25 V | - | - | 0°C ~ 70°C | 64-LQFP |
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