AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 89

• Manufacturer Part Number: AT90USB1286-16MU
• Description: Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
• Manufacturer: ATMEL [ATMEL Corporation]

7593A–AVR–02/06
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
0
INT5 ENABLE
1
INT5 INPUT
–
AT90USB64/128
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
–
89