AT90USB1287-MUR Atmel, AT90USB1287-MUR Datasheet - Page 402
![MCU AVR 128K FLASH 16MHZ 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
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
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Table 30-2.
Notes:
402
Symbol
t
t
t
t
t
t
HIGH
SU;STA
HD;DAT
SU;DAT
SU;STO
BUF
1. In AT90USB64/128, this parameter is characterized and not 100% tested.
2. Required only for f
3. C
4. f
5. This requirement applies to all AT90USB64/128 2-wire Serial Interface operation. Other devices connected to the 2-wire
6. The actual low period generated by the AT90USB64/128 2-wire Serial Interface is (1/f
7. The actual low period generated by the AT90USB64/128 2-wire Serial Interface is (1/f
AT90USB64/128
Serial Bus need only obey the general f
than 6 MHz for the low time requirement to be strictly met at f
ment will not be strictly met for f
communicate at full speed (400 kHz) with other AT90USB64/128 devices, as well as any other device with a proper t
acceptance margin.
Parameter
High period of the SCL clock
Set-up time for a repeated START condition
Data hold time
Data setup time
Setup time for STOP condition
Bus free time between a STOP and START
condition
CK
b
= capacitance of one bus line in pF.
= CPU clock frequency
2-wire Serial Bus Requirements (Continued)
Figure 30-3. 2-wire Serial Bus Timing
SCL
SCL
SDA
> 100 kHz.
t
SU;STA
SCL
> 308 kHz when f
SCL
requirement.
t
HD;STA
t
t
of
LOW
CK
f
f
f
f
f
f
= 8 MHz. Still, AT90USB64/128 devices connected to the bus may
f
f
f
f
f
f
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
Condition
t
HIGH
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
≤ 100 kHz
> 100 kHz
SCL
t
HD;DAT
= 100 kHz.
t
LOW
t
SU;DAT
SCL
SCL
250
100
Min
4.0
0.6
4.7
0.6
4.0
0.6
4.7
1.3
0
0
- 2/f
- 2/f
CK
CK
), thus f
), thus the low time require-
t
SU;STO
CK
t
r
3.45
Max
0.9
must be greater
–
–
–
–
–
–
–
–
–
–
7593K–AVR–11/09
t
BUF
LOW
Units
µs
µs
µs
µs
µs
µs
ns
ns
µs
µs
µs
µs
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