參數(shù)資料
型號(hào)： AT43USB351M-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Full-speed/Low-speed USB Microcontroller with ADC and PWM
中文描述： 8-BIT, MROM, 24 MHz, RISC MICROCONTROLLER, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MS-026BBC, LQFP-48
文件頁(yè)數(shù)： 9/101頁(yè)
文件大?。?/td> 624K
代理商： AT43USB351M-AC
9
AT43USB351M
3302E–USB–7/04
X-, Y- and Z-
Registers
Registers R26..R31 contain some added functions to their general-purpose usage. These reg-
isters are address pointers for indirect addressing of the Data Space. The three indirect
address registers X, Y, and Z are defined as:
In the different addressing modes these address registers have functions as fixed displace-
ment, automatic increment and decrement (see the descriptions for the different instructions).
ALU – Arithmetic
Logic Unit
The high-performance AVR ALU operates in direct connection with all 32 general-purpose
working registers. Within a single clock cycle, ALU operations between registers in the register
file are executed. The ALU operations are divided into three main categories – arithmetic, log-
ical and bit-functions.
Program Memory
The AT43USB351M contains 24K bytes on-chip masked programmable ROM for program
storage. Since all instructions are 16- or 32-bit words, the program memory is organized as
12K x 16. The AT43USB351M Program Counter (PC) is 14 bits wide, thus addressing the
12,288 program memory addresses.
Constant tables can be allocated within the entire program memory address space (see the
LPM - Load Program Memory instruction description).
Read Sequence
Where the functions overlap, the AT43USB351M and the AT43USB355 are binary-compati-
ble. Firmware written for the AT43USB355 will work unaltered on the AT43USB351M as long
as the functions are supported by the AT43USB351M. The only functional difference between
the two devices are:
X-register
15
XH
XL
0
7
0
7
0
R27 ($1B)
R26 ($1A)
Y-register
15
YH
YL
0
7
0
7
0
R29 ($1D)
R28 ($1C)
Z-register
15
ZH
ZL
0
7
0
7
0
R30 ($1F)
R31 ($1E)
Function
AT43USB355
AT43USB351
USB Hub
Hub3 downstream ports and attached function
Function only, No Hub
Port B
PB[0:7]
PB[4:7]
Port D
PD[0:7]
PD[0:6]
Port F
PF[0:3}
No Port F
相關(guān)PDF資料
PDF描述
AT43USB353M-AC Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AC Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355E-AU Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355M-AC Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355M-AU Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB353M 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
AT43USB353M_03 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost USB Microcontroller with Hub, ADC and PWM
AT43USB353M_04 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB353M-AC 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Low Cost Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB355 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset
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