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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AM79C930VCW датащи(PDF) 133 Page - Advanced Micro Devices |
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AM79C930VCW датащи(HTML) 133 Page - Advanced Micro Devices |
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133 / 161 page  P R E L I M I N A R Y AMD 133 Am79C930 PCMCIA I/O READ ACCESS Parameter Symbol Parameter Description Test Conditions Min Max Unit tAVIGL Address setup to IORD ↓ 70 ns tIGHAX Address hold from IORD ↑ 20 ns tRGLIGL REG setup to IORD ↓ 5ns tIGHRGH REG hold from IORD ↑ 0ns tELIGL CE setup to IORD ↓ 5ns tIGHEH CE hold from IORD ↑ 20 ns tIGLIGH IORD width 165 ns tIGLIAL INPACK ↓ delay from IORD ↓ 045 ns tIGHIAH INPACK ↑ delay from IORD ↑ 45 ns tIGLWTL WAIT ↓ delay from IORD ↓ 35 ns tWTLWTH WAIT width Notes 1, 2 53 X TCLKIN ns tWTHQV Data delay from WAIT ↑ 0ns tIGLQNZ Data enabled from IORD ↓ Note 2 0 ns tIGLQV Data delay from IORD ↓ 100 ns tIGHQX Data hold from IORD ↑ 0ns tIGHQZ Data disabled from IORD ↑ Note 2 20 ns Notes: 1. The max value for this parameter assumes the following worst case situation: Value Worst Case 0 FLASH and SRAM wait states set at “3.” 1 Host performs PCMCIA WRITE cycle at same time that Am79C930 embedded 80188 controller begins instruction fetch cycle to FLASH memory. 2 PCMCIA WRITE cycle is posted internal to Am79C930 device, pending the completion of the embedded 80188 controller access. 3 Host performs PCMCIA READ cycle immediately following completion of PCMCIA WRITE cycle. 4 After completion of first embedded 80188 access to FLASH, posted PCMCIA WRITE executes to SRAM; PCMCIA READ stycle is being held in wait state. 5 After completion of posted ISA WRITE cycle, new embedded 80188 access to FLASH begins. 6 After completion of second embedded 80188 access to FLASH, PCMCIA READ cycle is allowed to proceed onto memory bus to SRAM; host is still held in wait state. 7 At SRAM READ cycle completion, data is delivered to PCMCIA bus and wait state is exited. 2. Parameter is not included in production test. |
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