AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 148
AT91SAM7S256D-AU
Manufacturer Part Number
AT91SAM7S256D-AU
Description
ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
Manufacturer
Atmel
Series
SAM7S256r
Datasheet
1.AT91SAM7S256D-AU.pdf
(775 pages)
Specifications of AT91SAM7S256D-AU
Rohs
yes
Core
ARM
Processor Series
AT91SAM
Data Bus Width
16 bit/32 bit
Maximum Clock Frequency
55 MHz
Program Memory Size
256 KB
Data Ram Size
64 KB
On-chip Adc
Yes
Operating Supply Voltage
3 V to 3.6 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
LQFP-64
Mounting Style
SMD/SMT
Interface Type
2-Wire, I2S, SPI, USART
Length
7 mm
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7S256D-AU
Manufacturer:
ATMEL
Quantity:
101
- Current page: 148 of 775
- Download datasheet (5Mb)
21.5.3.1
21.5.3.2
The device uses the USB communication device class (CDC) drivers to take advantage of the installed PC RS-232
software to talk over the USB. The CDC class is implemented in all releases of Windows
WindowsXP. The CDC document, available at www.usb.org, describes a way to implement devices such as ISDN
modems and virtual COM ports.
The Vendor ID is Atmel’s vendor ID 0x03EB. The product ID is 0x6124. These references are used by the host
operating system to mount the correct driver. On Windows systems, the INF files contain the correspondence
between vendor ID and product ID.
The USB protocol is a master/slave protocol. This is the host that starts the enumeration sending requests to the
device through the control endpoint. The device handles standard requests as defined in the USB Specification.
Table 21-2.
The device also handles some class requests defined in the CDC class.
Table 21-3.
Unhandled requests are STALLed.
There are two communication endpoints and endpoint 0 is used for the enumeration process. Endpoint 1 is a 64-
byte Bulk OUT endpoint and endpoint 2 is a 64-byte Bulk IN endpoint. SAM-BA Boot commands are sent by the
host through the endpoint 1. If required, the message is split by the host into several data payloads by the host
driver.
If the command requires a response, the host can send IN transactions to pick up the response.
Request
GET_DESCRIPTOR
SET_ADDRESS
SET_CONFIGURATION
GET_CONFIGURATION
GET_STATUS
SET_FEATURE
CLEAR_FEATURE
Request
SET_LINE_CODING
GET_LINE_CODING
SET_CONTROL_LINE_STATE
Enumeration Process
Communication Endpoints
Handled Standard Requests
Handled Class Requests
Definition
Returns the current device configuration value.
Sets the device address for all future device access.
Sets the device configuration.
Returns the current device configuration value.
Returns status for the specified recipient.
Used to set or enable a specific feature.
Used to clear or disable a specific feature.
Definition
Configures DTE rate, stop bits, parity and number of
character bits.
Requests current DTE rate, stop bits, parity and number
of character bits.
RS-232 signal used to tell the DCE device the DTE
device is now present.
SAM7S Series [DATASHEET]
®
6175M–ATARM–26-Oct-12
, from Windows98SE to
148
Related parts for AT91SAM7S256D-AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT EVAL FOR ARM AT91SAM7S
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU, MPU & DSP Development Tools KICKSTART KIT ATMEL AT91SAM7S
Manufacturer:
IAR Systems
Part Number:
Description:
MCU ARM9 64K SRAM 144-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU FLASH 256K 100LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MPU 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM9 ULTRA LOW PWR 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM9 324-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU ARM9 SAMPLING 217CBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 217-LFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 208-PQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM 512K HS FLASH 100-LQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU ARM 512K HS FLASH 100-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM9 MCU 200 MHZ 324-TFBGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM MCU 16BIT 128K 256BGA
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC ARM7 MCU 32BIT 128K 64LQFP
Manufacturer:
Atmel
Datasheet: