Epson Research and Development Page 43
Vancouver Design Center
Hardware Functional Specification S1D13504
Issue Date: 01/01/30 X19A-A-002-18
1. If the S1D13504 host interface is disabled, the timing for WAIT# driven low is relative to the
falling edge of CS# and RD0#, RD1#, WE0#, WE1# or the first positive edge of BCLK after
A[20:0] and M/R# become valid, whichever occurs later.
2. If the S1D13504 host interface is disabled, the timing for D[15:0] driven is relative to the fall-
ing edge of RD0#, RD1# or the first positive edge of BCLK after A[20:0] and M/R# become
valid, whichever occurs later.
Table 7-4: Generic MPU Interface Synchronous Timing
Symbol Parameter Min Max Units
TBCLK Bus clock period 25 ns
t1 A[20:0], M/R#, CS#, RD0#,RD1#,WE0#,WE1# hold time 1ns
t2 A[20:0], M/R#, CS#, RD0#,RD1#,WE0#,WE1# setup time 5ns
t3 RD0#,RD1#,WE0#,WE1# high to A[20:0], M/R# invalid and CS# high 0ns
t41RD0#,RD1#,WE0#,WE1# low and CS# low to WAIT# driven low 17ns
t5 BCLK to WAIT# high 015ns
t6 RD0#,RD1#,WE0#,WE1# high to WAIT# high impedance 16ns
t7 D[15:0] valid to second BCLK where RD0#,RD1#,WE0#,WE1# low and CS#
low (write cycle) 5ns
t8 D[15:0] hold from WE0#, WE1# high (write cycle) 0ns
t92RD0#,RD1# low to D[15:0] driven (read cycle) 315ns
t10 D[15:0] valid to WAIT# high (read cycle) 0
t11 RD0#, RD1# high to D[15:0] high impedance (read cycle) 210