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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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AT90USB646_0607 데이터시트(PDF) 90 Page - ATMEL Corporation |
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AT90USB646_0607 데이터시트(HTML) 90 Page - ATMEL Corporation |
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90 / 435 page  90 7593D–AVR–07/06 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 Signal Name PE7/INT7/AIN.1/ UVCON PE6/INT6/AIN.0 PE5/INT5/ TOSC1 PE4/INT4/ TOSC2 PUOE 0 0 0 0 PUOV 0 0 0 0 DDOE UVCONE 0 0 0 DDOV UVCONE 0 0 0 PVOE UVCONE 0 0 0 PVOV UVCON 0 0 0 DIEOE INT7 ENABLE INT6 ENABLE INT5 ENABLE INT4 ENABLE DIEOV 1 1 1 1 DI INT7 INPUT INT6 INPUT INT5 INPUT INT4 INPUT AIO AIN1 INPUT AIN0 INPUT – – Table 10-17. Overriding Signals for Alternate Functions in PE3..PE0 Signal Name PE3/UID PE2/ALE/HWB PE1/RD PE0/WR PUOE UIDE 0 SRE SRE PUOV 1 0 0 0 DDOE UIDE SRE SRE SRE DDOV 0 1 1 0 PVOE 0 SRE SRE SRE PVOV 0 ALE RD WR DIEOE UIDE 0 0 0 DIEOV 1 0 0 1 DI UID HWB – – PE0 0 0 0 0 AIO – – – – |
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