AT43USB353M_04 Datasheet, PDF (1/95 Pages) ATMEL Corporation – Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM

Features
• AVR^® 8-bit RISC Microcontroller with 41.5 or 83 ns Instruction Cycle Time
• USB Hub with One Attached and Two External Ports
• USB Function with Three Programmable End-points
• 24 KB Program Memory, 1 KB Data SRAM
• 32 x 8 General-purpose Working Registers
• 15 Programmable I/O Port Pins
• 12-channel 10-bit ADC
• One 8-bit Timer/Counter with Separate Pre-scaler
• One 16-bit Timer/Counter with Separate Pre-scaler and Two PWMs
• External and Internal Interrupt Sources
• Programmable Watchdog Timer
• 6 MHz Oscillator with On-chip PLL
• 5V Operation with On-chip 3.3V Power Supply
• 48-lead LQFP Package
Description
The Atmel AT43USB353M is an 8-bit microcontroller based on the AVR RISC archi-
tecture. By executing powerful instructions in a single clock cycle, the AT43USB353M
achieves throughputs approaching 24 MIPS. The AVR core combines a rich instruc-
tion set with 32 general-purpose working registers. All 32 registers are directly
connected to the ALU allowing two independent registers to be accessed in one single
instruction executed in one clock cycle. The resulting architecture is more code effi-
cient while achieving throughputs up to ten times faster than conventional CISC
microcontrollers.
The AT43USB353M features an on-chip 24-Kbyte of masked ROM program memory
and 1-Kbyte of data memory. It is supported by a standard set of peripherals such as
timer/counter modules, watchdog timer and internal and external interrupt sources.
The major peripheral included in the AT43USB353M is a full-speed USB 2.0 Hub with
an embedded function and a 12-channel Analog-to-Digital Converter (ADC) for use in
applications such as game controllers.
The AT43USB353M is binary compatible with the AT43USB355. Program develop-
ment and debugging for the AT43USB353M uses the AT43DK355, including all its
tools and libraries.
Pin Configuration
Figure 1. AT43USB353M 48-lead LQFP
Low Cost
Full-speed USB
Microcontroller
with Embedded
Hub, ADC and
PWM
AT43USB353M
PD1 1
PD0 2
DP3 3
DM3 4
DP2 5
DM2 6
DP0 7
DM0 8
CEXT1 9
VCC1 10
VSS1 11
PA7 12
36 VSSA
35 CEXTA
34 VCCA
33 ADC0
32 ADC1
31 ADC2
30 ADC3
29 ADC4
28 ADC5
27 ADC6
26 ADC7
25 ADC8
Rev. 3307B–USB–4/04
1