AT90USB1287-MUR Atmel, AT90USB1287-MUR Datasheet - Page 295
AT90USB1287-MUR
Manufacturer Part Number
AT90USB1287-MUR
Description
MCU AVR 128K FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB646-MU.pdf
(461 pages)
Specifications of AT90USB1287-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Processor Series
AT90USBx
Core
AVR8
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525, ATAVRQTOUCHX
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 295 of 461
- Download datasheet (5Mb)
23.14 IN Pipe management
7593K–AVR–11/09
If the OUT Pipe is composed of multiple banks, this also switches to the next data bank. The
TXOUT and FIFOCON bits are automatically updated by hardware regarding the status of the
next bank.
The Pipe must be configured first.
When the Host requires data from the device, the firmware has to determine first the IN mode to
use using the INMODE bit:
The IN request generation will start when the firmware clear the PFREEZE bit.
• INMODE = 0. The INRQX register is taken in account. The Host controller will perform
• INMODE = 1. The USB controller will perform infinite IN request until the firmware freezes the
(INRQX+1) IN requests on the selected Pipe before freezing the Pipe. This mode avoids to
have extra IN requests on a Pipe.
Pipe.
Example with 1 OUT data bank
Example with 2 OUT data banks
Example with 2 OUT data banks
FIFOCON
FIFOCON
FIFOCON
TXOUT
TXOUT
TXOUT
SW
SW
SW
write data from CPU
write data from CPU
write data from CPU
BANK 0
BANK 0
BANK 0
SW
SW
SW
OUT
OUT
OUT
SW
SW
write data from CPU
write data from CPU
(bank 0)
DATA
BANK 1
BANK 1
(bank 0)
(bank 0)
DATA
DATA
ACK
HW
SW
HW
HW
ACK
ACK
SW
OUT
SW
SW
SW
OUT
write data from CPU
write data from CPU
write data from CPU
(bank 1)
DATA
AT90USB64/128
BANK 0
BANK0
BANK0
ACK
(bank 1)
DATA
SW
OUT
ACK
295
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