參數(shù)資料
型號(hào)： AT43USB355M-AC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
中文描述： 8-BIT, MROM, 12 MHz, RISC MICROCONTROLLER, PQFP64
封裝： 1.40 MM, PLASTIC, MS-026ACB, LQFP-64
文件頁數(shù)： 10/115頁
文件大?。?/td> 610K
代理商： AT43USB355M-AC
10
AT43USB355
2603G–USB–04/06
The program memory of the AT43USB355E is automatically written with data stored in an
external serial EEPROM during the chip's power-on reset sequence. The power-on reset is
the only way the on-chip program memory of the AT43USB355E will be written or modified.
The two versions of the AT43USB355 are binary compatible. A firmware written for the
AT43USB355E will work unaltered on the AT43USB355M. The only functional difference
between the two versions is with respect to the serial EEPROM interface pins, GPIO PF[0:3].
The differences are:
SPI Serial
EEPROM Interface
(AT43USB355E
Only)
The AT43USB355E is designed to interface directly with a synchronous serial peripheral inter-
face (SPI) SEEPROM such as the Atmel AT25HP256/512. All instructions, addresses and
data are transferred with the MSB first and start with a high-to-low SSN transition.
Note:
The SPI port of the AT43USB355E at PF[0:3] is dedicated for program memory downloading
only. It cannot be accessed by the firmware program.
Figure 4.
AT43USB355E Read Sequence
Read Sequence
1.
The AT43USB35E asserts its SSN output pin and outputs a 3 MHz clock at SCK. It
continues to activate SCK until the completion of the read process.
The AT43USB355E transmits the READ op-code (= 0000011) through its MOSI, fol-
lowed by the 16-bit byte address to be read, x0000. Please note that the
AT43USB355E will send a 16-byte address only. SEEPROM with SPI that requires a
24-bit address cannot be used with the AT43USB355E.
The SEEPROM then shifts out the data through its MISO pin.
The AT43USB35E de-asserts SCK and SSN after 24K bytes data read is complete.
2.
3.
4.
Port F Pins
AT43USB355E
AT43USB355M
PF0
Slave Select Pin
– Its output will be asserted (low) during
downloading of firmware and will stay de-asserted (high) after
download is completed.
NC (No connect)
PF1, PF2, PF3
Functions as serial EEPROM interface signals during
downloading and as GPIO pins after download is completed.
GPIO
AT43USB355E
AT25HP256
SSN
MOSI
MISO
SCK
相關(guān)PDF資料
PDF描述
AT43USB355M-AU Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB380 On-The-Go Upgrade of the AT43USB370 USB 2.0 Full-Speed Host/Function Processor
AT45BR3214B 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY
AT45BR3214B-C1 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY
AT45CS1282 128-megabit 2.7-volt Dual-interface Code Shadow DataFlash
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43USB355M-AU 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Microcontroller with Embedded Hub, ADC and PWM
AT43USB370 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:USB 2.0 Full-Speed Host/Function Processor
AT43USB370E-AC 功能描述:USB 接口集成電路 USB HOST DEVICE CONTROL - COM TEMP RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
AT43USB380 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:On-The-Go Upgrade of the AT43USB370 USB 2.0 Full-Speed Host/Function Processor
AT43USB380E-AC 功能描述:USB 接口集成電路 USB OTG/HOST/FUNC DEVICE CNTRL RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20
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