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ELANSC310 датащи(PDF) 112 Page - Advanced Micro Devices |
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ELANSC310 датащи(HTML) 112 Page - Advanced Micro Devices |
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112 / 119 page ![]() 112 Élan™SC310 Microcontroller Data Sheet PREL IMINARY Notes: These timings may be modified via the MMS Memory Wait State 1 Register, Index 62h, and the Command Delay Register, Index 60h. (See the ÉlanTMSC310 Microcontroller Programmer’s Reference Manual, order #20665.) 1. These timings apply only to the B4 version of the ÉlanSC310 microcontroller. The timings for the B3 version are t2b = 0 ns, t3b = 550 ns, t11b = -2 ns, and t13 = -4 ns. Table 58. ISA I/O 8-Bit Read/Write Cycle (See Figure 47) Symbol Parameter Description Notes Preliminary Units Min Max t1a SA stable to IOW active 200 ns t1b SA stable to IOR active 150 ns t2a SA hold from IOW inactive 50 ns t2b SA hold from IOR inactive 1 50 ns t3a IOW pulse width 450 ns t3b IOR pulse width 1 505 ns t4a IOW active to IOCHRDY inactive 300 ns t4b IOR active to IOCHRDY inactive 350 ns t5a IOW hold from IOCHRDY active 110 ns t5b IOR hold from IOCHRDY active 160 ns t6 RDDATA setup to command inactive 40 ns t7 RDDATA hold from command inactive 0 ns t8 WRDATA setup to command inactive 400 ns t9 WRDATA hold from command inactive 50 ns t10 DBUFOE active from command 5 ns t11a DBUFOE hold from command Write 50 ns t11b DBUFOE hold from command Read 1 50 ns t12 ENDIRH, ENDIRL setup to IOR 150 ns t13 ENDIRH, ENDIRL hold from IOR 150 ns t14 BALE pulse width 50 ns |
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