AT90USB1287 Atmel Corporation, AT90USB1287 Datasheet - Page 88
AT90USB1287
Manufacturer Part Number
AT90USB1287
Description
Manufacturer
Atmel Corporation
Specifications of AT90USB1287
Flash (kbytes)
128 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
48
Ext Interrupts
16
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device + OTG
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
10
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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88
AT90USB64/128
ALE is the external data memory Address latch enable.
HWB allows to execute the bootloader section after reset when tied to ground during external
reset pulse. The HWB mode of this pin is active only when the HWBE fuse is enable.
• RD – Port E, Bit 1
RD is the external data memory read control enable.
• WR – Port E, Bit 0
WR is the external data memory write control enable.
Table 10-16. Overriding Signals for Alternate Functions PE7..PE4
Table 10-17. Overriding Signals for Alternate Functions in PE3..PE0
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
PE0
AIO
PE7/INT7/AIN.1/
UVCON
0
0
UVCONE
UVCONE
UVCONE
UVCON
INT7 ENABLE
1
INT7 INPUT
AIN1 INPUT
PE3/UID
UIDE
1
UIDE
0
0
0
UIDE
1
UID
0
–
PE2/ALE/HWB
0
0
SRE
1
SRE
ALE
0
0
HWB
0
–
PE6/INT6/AIN.0
0
0
0
0
0
0
INT6 ENABLE
1
INT6 INPUT
AIN0 INPUT
PE1/RD
SRE
0
SRE
1
SRE
RD
0
0
–
0
–
PE5/INT5/
TOSC1
0
0
0
0
0
INT5 ENABLE
1
–
0
INT5 INPUT
PE0/WR
SRE
0
SRE
0
SRE
WR
0
1
–
0
–
PE4/INT4/
TOSC2
0
0
0
0
0
0
INT4 ENABLE
1
INT4 INPUT
–
7593K–AVR–11/09
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