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SST89E516RD2-40-C-TQJ Datasheet(PDF) 73 Page - Silicon Storage Technology, Inc |
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SST89E516RD2-40-C-TQJ Datasheet(HTML) 73 Page - Silicon Storage Technology, Inc |
73 / 91 page Preliminary Specifications FlashFlex51 MCU SST89E52RD2 / SST89E54RD2 / SST89E58RD2 / SST89E516RD2 SST89V52RD2 / SST89V54RD2 / SST89V58RD2 / SST89V516RD2 73 ©2004 Silicon Storage Technology, Inc. S71255-00-000 3/04 2. Capacitive loading on Ports 0 & 2 may cause spurious noise to be superimposed on the VOLs of ALE and Ports 1 & 3. The noise due to external bus capacitance discharging into the Port 0 & 2 pins when the pins make 1-to-0 transitions during bus operations. In the worst cases (capacitive loading > 100pF), the noise pulse on the ALE pin may exceed 0.8V. In such cases, it may be desirable to qualify ALE with a Schmitt Trigger, or use an address latch with a Schmitt Trigger STROBE input. 3. Load capacitance for Port 0, ALE & PSEN#= 100pF, load capacitance for all other outputs = 80pF. 4. Capacitive loading on Ports 0 & 2 may cause the VOH on ALE and PSEN# to momentarily fall below the VDD - 0.7 specification when the address bits are stabilizing. 5. Pins of Ports 1, 2 & 3 source a transition current when they are being externally driven from 1 to 0. The transition current reaches its maximum value when VIN is approximately 2V. 6. Pin capacitance is characterized but not tested. EA# is 25pF (max). |
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