Page 13-2 Chapter 13. EZ-USB AC/DC Parameters EZ-USB TRM v1.9
13.1.4 AC Electrical Characteristics
Specified Conditions: Capacitive load on all pins = 30 pF
13.1.5 General Memory Timing
13.1.6 Program Memory Read
13.1.7 Data Memory Read
Table 13-2. General Memory Timing
Symbol Parameter Min Typ Max Unit Notes
tCL 1/CLK 24 Frequency 41.66 ns
tAV Delay from Clock to Valid A ddress 0 10 ns
tCD D elay from CLK24 to CS# 2 15 ns
tOED Delay from CLK24 to O E# 2 15 ns
tWD Delay from CLK24 to WR# 2 15 ns
tRD D elay from CLK24 to RD# 2 15 ns
tPD Delay from CLK24 to PSEN# 2 15 ns
Table 13-3. Program Memory Read
Symbol Parameter Formula Min Max Uni t Notes
tAA1 Address Access Time 3tCL-tAV-TDSU1 103 ns
tAH1 Address Hold fr om CLK24 tCL+1 42 ns
tDSU1 Data setup toCLK24 12 ns
tDH1 Data Hold from CLK24 0 ns
Table 13-4. Data Memory Read
Symbol Parameter Formula Min Max Unit Notes
tAA2 Address Access Time 3tCL-tAV-TDSU1 103 ns
tAH2 Address Hold from CLK24 tCL+1 42 ns
tDSU2 Da ta setupto CLK24 12 ns
tDH2 Data Hold f rom CLK24 0 ns
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