AT43USB320A-AC Atmel, AT43USB320A-AC Datasheet - Page 65
AT43USB320A-AC
Manufacturer Part Number
AT43USB320A-AC
Description
IC USB MCU EMBED HUB AVR 100LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB320A-AC.pdf
(115 pages)
Specifications of AT43USB320A-AC
Applications
USB Hub/Microcontroller
Core Processor
AVR
Controller Series
AT43USB
Ram Size
512 x 8
Interface
SPI Serial, USB, UART
Number Of I /o
32
Voltage - Supply
4.4 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Program Memory Type
-
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1443E–USB–4/04
Three I/O memory address locations are allocated for the Port B, one each for the Data Regis-
ter - PORTB, $18($38), Data Direction Register (DDRB), $17($37) and the Port B Input Pins
(PINB), $16($36). The Port B Input Pins address is read only, while the Data Register and the
Data Direction Register are read/write.
The port pins have no selectable pull-up resistors.
The Port B pins with alternate functions are shown in the following table:
Table 24. Port B Pins Alternate Functions
When the pins are used for the alternate function the DDRB and PORTB register has to be set
according to the alternate function description.
Port Pin
PB0
PB1
PB4
PB5
PB6
PB7
Alternate Functions
T0 (Timer/Counter 0 External Counter Input)
T1 (Timer/Counter 1 External Counter Input)
SS (SPI Slave Select Input)
MOSI (SPI Bus Master Output/Slave Input)
MISO (SPI Bus Master Input/Slave Output)
SCK (SPI Bus Serial Clock)
AT43USB320A
65
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