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FM573-P Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 10 page Ramtron FM573/574 27 March 2001 2/10 Figure 1. Block Diagram S 1 S 2 D Mux Q Q D S 1 S 2 D Mux Power-up Restore Dn C OE State Change Detect Nonvolatile Latch Q Q D L Power Monitor VDD Reference Nonvolatile section Qn Pin Description Pin Name Pin Number I/O Pin Description /OE 1 I Output enable. When low, the outputs are driven. When high, the outputs are tri-stated. C 11 I Controls the latching of data according to the t ruth tables below. D0-D7 2-9 I Data in. Q0-Q7 12-19 O Data out. VSS 10 I Ground VDD 20 I Supply Voltage Functional Tables FM573 Table /OE C Dn Internal Qn Output Qn Description 1 X X X Hi-Z Tri-state outputs 0 0 X Qn Qn Outputs enabled, hold state 0 1 Dn Dn Dn Transparent 1 1 Dn Dn Hi-Z Load data, outputs tri-state FM574 Table /OE C Dn Internal Qn Output Qn Description 1 X X X Hi-Z Tri-state outputs 0 X X Qn Qn Outputs enabled, hold state 0 ↑ Dn Dn Dn Load data, outputs enabled 1 ↑ Dn Dn Hi-Z Load data, outputs tri-state |
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