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confusion about Synopsys 90nm Generic Library.

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lubee

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Hi, All

I have download Synopsys 90nm Generic Library which is used for education.

it contains so many items, one corn lib of which (SAED_EDK90nm_ccs_models_hvt) is listed as below,

The directories and files are contained in the lib of SAED_EDK90nm_ccs_models_hvt

clock_gating/
isoao/
level_shifters/
level_shifters_ss/
retention/
retention_sr/
saed90nm_max_hth_hvt_ccs.db
saed90nm_max_hth_hvt_ccs.lib
saed90nm_max_htm_hvt_ccs.db
saed90nm_max_htm_hvt_ccs.lib
saed90nm_max_hvt_ccs.db
saed90nm_max_hvt_ccs.lib
saed90nm_max_lt_hvt_ccs.db
saed90nm_max_lt_hvt_ccs.lib
saed90nm_max_lth_hvt_ccs.db
saed90nm_max_lth_hvt_ccs.lib
saed90nm_max_ltm_hvt_ccs.db
saed90nm_max_ltm_hvt_ccs.lib
saed90nm_max_nt_hvt_ccs.db
saed90nm_max_nt_hvt_ccs.lib
saed90nm_max_nth_hvt_ccs.db
saed90nm_max_nth_hvt_ccs.lib
saed90nm_max_tm_hvt_ccs.db
saed90nm_max_tm_hvt_ccs.lib
saed90nm_min_ht_hvt_ccs.db
saed90nm_min_ht_hvt_ccs.lib
saed90nm_min_htl_hvt_ccs.db
saed90nm_min_htl_hvt_ccs.lib
saed90nm_min_htm_hvt_ccs.db
saed90nm_min_htm_hvt_ccs.lib
saed90nm_min_hvt_ccs.db
saed90nm_min_hvt_ccs.lib
saed90nm_min_ltl_hvt_ccs.db
saed90nm_min_ltl_hvt_ccs.lib
saed90nm_min_ltm_hvt_ccs.db
saed90nm_min_ltm_hvt_ccs.lib
saed90nm_min_nt_hvt_ccs.db
saed90nm_min_nt_hvt_ccs.lib
saed90nm_min_ntl_hvt_ccs.db
saed90nm_min_ntl_hvt_ccs.lib
saed90nm_min_tm_hvt_ccs.db
saed90nm_min_tm_hvt_ccs.lib
saed90nm_typ_ht_hvt_ccs.db
saed90nm_typ_ht_hvt_ccs.lib
saed90nm_typ_htl_hvt_ccs.db
saed90nm_typ_htl_hvt_ccs.lib
saed90nm_typ_htm_hvt_ccs.db
saed90nm_typ_htm_hvt_ccs.lib
saed90nm_typ_hvt_ccs.db
saed90nm_typ_hvt_ccs.lib
saed90nm_typ_lt_hvt_ccs.db
saed90nm_typ_lt_hvt_ccs.lib
saed90nm_typ_ltl_hvt_ccs.db
saed90nm_typ_ltl_hvt_ccs.lib
saed90nm_typ_ltm_hvt_ccs.db
saed90nm_typ_ltm_hvt_ccs.lib
saed90nm_typ_ntl_hvt_ccs.db
saed90nm_typ_ntl_hvt_ccs.lib
saed90nm_typ_tm_hvt_ccs.db
saed90nm_typ_tm_hvt_ccs.lib


my question is :
1) what does "tm"/"ntl"/"tl"/"ltl" mean? Maybe "t"/"l"/"h"/"l"/"m" stands for what?

2) How should I select these libraries according to various process scenarios?

Thanks a lot!
 

lubee

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no body knows?
 

lostinxlation

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Do they not have a release note that explains the naming convention ?
Or do these files not have a header that tells you what type of library it is ?
 

skal81

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I found the following document:
SAED90nm LowPower Library
According to it nt/lt/ht is for nominal/low/high temperature and the last letter is for the power voltage (h=1.08/l=0.9).
As lostinxlation said you should try to check the library document of the .lib header itself to make sure of the meaning.
 

lubee

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hi, buddies,
Got it!!! thanks so much.
 

alamouti

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Dear all, I am a (really2 green) newbie.

When I compare my synthesis result with paper reference, the area is almost same (0.1092 vs 0.0929 mm2*). However, the gates count is significantly different (25.65 KGE vs 16.79 KGE*).

*the latter result is my work.

Would somebody explain why this could happen?
Is it due because we use different library?

Note:
The paper reference used TSMC 65nm library and I used SAED90nm library.

Thanks,
 

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