AT43USB325E-AU Atmel, AT43USB325E-AU Datasheet - Page 65
AT43USB325E-AU
Manufacturer Part Number
AT43USB325E-AU
Description
IC USB KEYBOARD CTRLR 64LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB325E-AC.pdf
(109 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT43USB325E-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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8.1.2
3355C–USB–4/05
Idle State
The following information describes how the AT43USB325’s USB hardware and firmware oper-
ates during a control transfer between the host and the hub’s or function’s control end-point.
This is the default state from power-up.
Legend:
DATA1/DATA0 = Data packet with DATA1 or DATA2 PID
DATA1(0) = Zero length DATA1 packet
RX_OUT_INT
TX_COMPLETE_INT
Write Status
Response
Control
Write Data
Response
Control
RX_OUT_INT
TX_COMPLETE_INT
(
ANY STABLE STATE
RX_SETUP_INT
TX_COMPLETE_INT
Response
Read Status
Response
Setup
Control
Idle
RX_OUT_INT
)
TX_COMPLETE_INT
Read Data
Response
Control
Response
No-data
Status
AT43USB325
65
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