macsehw/hardware/fpga/bbu/docs/index.md

MC68000 CPU datasheets:

20100924/http://www.freescale.com/files/archives/doc/ref_manual/M68000PRM.pdf
20100925/http://www.freescale.com/files/32bit/doc/ref_manual/MC68000UM.pdf

MC68000 CPU datasheets UPDATED URLS:

20201230/https://www.nxp.com/docs/en/reference-manual/M68000PRM.pdf
20201230/https://www.nxp.com/docs/en/reference-manual/MC68000UM.pdf

Inside Macintosh, the old printed volumes mainly pertaining to the Macintosh 512k but still a very useful reference:

20110506/http://www.pagetable.com/?p=50
20110506/http://www.weihenstephan.org/~michaste/pagetable/mac/Inside_Macintosh.pdf

For newer info, see the online website format in the Internet Archive Wayback Machine.

20190525/https://web.archive.org/web/20000306231850/http://developer.apple.com/techpubs/mac/Devices/Devices-122.html

Next, the datasheets for all the other chips on the Macintosh SE Main Logic Board: 6522 VIA, Zilog 8530 SCC, NCR 5380 SCSI, 84-PLCC socket pinout for mapping the BBU pinout. And, for the sake of understanding how to program asynchronous DRAM timings, a random asynchronous DRAM chip's datasheet.

20201018/http://koyado.com/Heathkit/Z67-IDE-plus_files/NCR_5380_SCSI_Interface_Chip_Design_Manual_May85.pdf
20201116/http://www.applelogic.org/files/Z8530UM.pdf
20201117/http://archive.6502.org/datasheets/rockwell_r6522_via.pdf
20201018/http://www.assmann-wsw.com/fileadmin/datasheets/ASS_0981_CO.pdf
20201018/https://media.digikey.com/pdf/Data%20Sheets/Rohm%20PDFs/MSM51V17405F.pdf