 board_d: 1.25
 sram_fall: 2.0
 nmos_dd_min: 2.0 nmos_dv_max: 5.0
 we_ce_r_min: 1.30 we_ce_r_max: 4.30
 we_ce_f_min: 1.40 we_ce_f_max: 4.20
 add_ch_min: 1.30 add_ch_max: 4.30
 edge1_min: 4.91 edge1_max: 7.91
 edge2_min: 32.8 edge2_max: 35.8
 edge3_min: 50.3 edge3_max: 53.3
 edge4_min: 72.4 edge4_max: 75.4
