AT43USB325E-AU Atmel, AT43USB325E-AU Datasheet - Page 45

• 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

6.3
Figure 6-3.
3355C–USB–4/05
16-bit Timer/Counter1
15
15
15
15
TIMER/COUNTER1 OUTPUT COMPARE REGISTER A
Timer/Counter1 Block Diagram
OVERFLOW IRQ
REGISTER (TIMSK)
TIMER INT. MASK
T/C1 INPUT CAPTURE REGISTER (ICR1)
T/C1
TIMER/COUNTER1 (TCNT1)
16-BIT COMPARATOR
8
8
8
8
T/C1 COMPARE
7
7
7
MATCHA IRQ
7
REGISTER (TIFR)
TIMER INT. FLAG
CAPTURE
TRIGGER
T/C1 COMPARE
MATCHB IRQ
0
0
0
0
REGISTER A (TCCR1A)
15
15
TIMER/COUNTER1 OUTPUT COMPARE REGISTER B
T/C1 CONTROL
CAPTURE IRQ
T/C1INPUT
16-BIT COMPARATOR
CONTROL
LOGIC
8
8
REGISTER B (TCCR1B)
7
7
T/C1 CONTROL
AT43USB325
0
0
CK
T1
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