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at90usb asm code
Atmel has announced four new AVR Flash MCUs with USB controller. The AT90USB microcontrollers are designed to address the varied requirements of embedded applications needing USB connectivity in host and function modes.
The AT90USB1286 and AT90USB646 have an USB interface for applications communicating with a USB host. The AT90USB1287 and AT90USB647 comply with the USB On-The-Go (OTG) standard for use as Dual Role Devices (DRD) in applications operating as either host or function device. The USB host capability is key to embedded devices needing to communicate without PC intervention.
The AT90USB1286 and AT90USB1287 have 128 KBytes of In-System Programmable (ISP) Flash, 8 KBytes of RAM and 4 KBytes of EEPROM. The AT90USB646 and AT90USB647 are identical but with half the memory size. All devices have an on-chip bootloader that allows ISP through the USB bus providing unrivalled flexibility from development phase to field update.
A new USB controller has been developed to support all USB modes and OTG. It can be configured to operate in low speed at 1.5 Mbit/s or full speed at 12 Mbit/s. Up to one control and six data endpoints/pipes can be configured simultaneously with a maximum packet size of 64 bytes. The maximum packet size can be extended to a maximum of 256 bytes, for time critical isochronous transfers with the first data endpoint/pipe. Near-maximum USB bandwidth can be achieved with double buffering, without any real-time constraints when the AVR MCU runs at 8 MHz.
On-chip PLL with an external crystal of 2 MHz to 16 MHz provides a 48 MHz clock for USB operation. The new AVR microcontrollers can operate at 8 MHz with a supply voltage of 3V for battery-powered applications. In this case, a typical power consumption of less than 20 mA is measured with the USB host in action. The devices can also be USB powered at 5V and operate up to 16 MHz.
All devices include a hardware multiplier, one USART, one SPI, one TWI, two 8-bit and two 16-bit timers with PWM and RTC, 8-channel 10-bit ADC with differential inputs, a programmable gain amplifier and 48 programmable I/Os.
An extensive software library is offered to support the most-relevant USB classes for the embedded market: Mass Storage Device (MSD), Human Interface Device (HID), Device Firmware Upgrade (DFU), Communication Device Class (CDC), Audio Class, etc.
AT90USB1286 is available now in a QFN64 package at $5.80 for 10,000 units. AT90USB1287 is sampling in QFN64 and TQFP64 packages at $6.20 in quantities of 10,000. AT90USB647 and AT90USB646 will be available later in 2006 at $4.60 and $4.20, respectively, for 10,000 units.
Atmel has announced four new AVR Flash MCUs with USB controller. The AT90USB microcontrollers are designed to address the varied requirements of embedded applications needing USB connectivity in host and function modes.
The AT90USB1286 and AT90USB646 have an USB interface for applications communicating with a USB host. The AT90USB1287 and AT90USB647 comply with the USB On-The-Go (OTG) standard for use as Dual Role Devices (DRD) in applications operating as either host or function device. The USB host capability is key to embedded devices needing to communicate without PC intervention.
The AT90USB1286 and AT90USB1287 have 128 KBytes of In-System Programmable (ISP) Flash, 8 KBytes of RAM and 4 KBytes of EEPROM. The AT90USB646 and AT90USB647 are identical but with half the memory size. All devices have an on-chip bootloader that allows ISP through the USB bus providing unrivalled flexibility from development phase to field update.
A new USB controller has been developed to support all USB modes and OTG. It can be configured to operate in low speed at 1.5 Mbit/s or full speed at 12 Mbit/s. Up to one control and six data endpoints/pipes can be configured simultaneously with a maximum packet size of 64 bytes. The maximum packet size can be extended to a maximum of 256 bytes, for time critical isochronous transfers with the first data endpoint/pipe. Near-maximum USB bandwidth can be achieved with double buffering, without any real-time constraints when the AVR MCU runs at 8 MHz.
On-chip PLL with an external crystal of 2 MHz to 16 MHz provides a 48 MHz clock for USB operation. The new AVR microcontrollers can operate at 8 MHz with a supply voltage of 3V for battery-powered applications. In this case, a typical power consumption of less than 20 mA is measured with the USB host in action. The devices can also be USB powered at 5V and operate up to 16 MHz.
All devices include a hardware multiplier, one USART, one SPI, one TWI, two 8-bit and two 16-bit timers with PWM and RTC, 8-channel 10-bit ADC with differential inputs, a programmable gain amplifier and 48 programmable I/Os.
An extensive software library is offered to support the most-relevant USB classes for the embedded market: Mass Storage Device (MSD), Human Interface Device (HID), Device Firmware Upgrade (DFU), Communication Device Class (CDC), Audio Class, etc.
AT90USB1286 is available now in a QFN64 package at $5.80 for 10,000 units. AT90USB1287 is sampling in QFN64 and TQFP64 packages at $6.20 in quantities of 10,000. AT90USB647 and AT90USB646 will be available later in 2006 at $4.60 and $4.20, respectively, for 10,000 units.
