AT43USB325E-AC Atmel, AT43USB325E-AC Datasheet - Page 91

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

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

Figure 8-1.
3355C–USB–4/05
Port Power Management
BUS_POWER
GND
Figure 8-1
hub design with global overcurrent protection and ganged power switching.
shows a simplified diagram of a power management circuit of an AT43USB325 based
PWRN
IN
CTL
GND
SWITCH
AT43USB325
OVCN
FLG
OUT
VCC
PORT2_POWER
PORT2_GND
PORT3_POWER
PORT3_GND
PORT4_POWER
PORT4_GND
PORT5_POWER
PORT5_GND
AT43USB325
91