AT43USB325E-AC Atmel, AT43USB325E-AC Datasheet - Page 108
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AT43USB325E-AC
Manufacturer Part Number
AT43USB325E-AC
Description
IC USB KEYBOARD CTRLR HUB 64LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB325E-AC.pdf
(109 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
ii
AT43USB325
6
7
8
9
10 Ordering Information ........................................................................... 103
11 Packaging Information ........................................................................ 104
12 Errata Sheet .......................................................................................... 105
13 Change Log .......................................................................................... 106
Timer/Counters ...................................................................................... 42
I/O Ports .................................................................................................. 55
Programming the USB Module ............................................................. 63
Electrical Specification .......................................................................... 96
Table of Contents....................................................................................... i
6.1Timer/Counter Prescaler .........................................................................................42
6.28-bit Timer/Counter0 ...............................................................................................43
6.316-bit Timer/Counter1 .............................................................................................45
6.416-bit Timer/Counter1 Operation .............................................................................46
6.5Watchdog Timer ......................................................................................................53
7.1Port A ......................................................................................................................56
7.2Port B ......................................................................................................................57
7.3Port C ......................................................................................................................58
7.4Port D ......................................................................................................................59
7.5Port E ......................................................................................................................60
7.6Port F .......................................................................................................................61
8.1USB Function ..........................................................................................................63
8.2USB Registers .........................................................................................................71
8.3Endpoint Registers ..................................................................................................72
8.4USB Hub .................................................................................................................81
8.5Suspend and Resume .............................................................................................92
9.1Absolute Maximum Ratings .....................................................................................96
9.2DC Characteristics ..................................................................................................96
10.1Standard Package Options .................................................................................103
10.2Green Package Options (Pb/Halide-free/RoHS Compliant) ................................103
11.164AA – LQFP .....................................................................................................104
12.1Problem ...............................................................................................................105
12.2Fix/Workaround ...................................................................................................105
3355C–USB–4/05