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MSC1212Y5PAGR Datasheet(PDF) 7 Page - Burr-Brown (TI) |
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MSC1212Y5PAGR Datasheet(HTML) 7 Page - Burr-Brown (TI) |
7 / 69 page MSC1212 7 SBAS278A www.ti.com MD2 MD1 MD0 MOVX DURATION tMCS 0 0 0 2 Machine Cycles 0 0 0 1 3 Machine Cycles (default) 4tCLK 0 1 0 4 Machine Cycles 8tCLK 0 1 1 5 Machine Cycles 12tCLK 1 0 0 6 Machine Cycles 16tCLK 1 0 1 7 Machine Cycles 20tCLK 1 1 0 8 Machine Cycles 24tCLK 1 1 1 9 Machine Cycles 28tCLK AC ELECTRICAL CHARACTERISTICS(1)(2): DVDD = 2.7V to 5.25V 2.7V to 3.6V 4.75V to 5.25V SYMBOL FIGURE PARAMETER MIN MAX MIN MAX UNITS System Clock fOSC(3) D External Crystal Frequency (fOSC)1 16 1 30 MHz 1/tOSC(3) D External Clock Frequency (fOSC)0 16 1 30 MHz fOSC(3) D External Ceramic Resonator Frequency (fOSC)1 12 1 12 MHz Program Memory tLHLL A ALE Pulse Width 1.5tCLK – 5 1.5tCLK – 5ns tAVLL A Address Valid to ALE LOW 0.5tCLK – 10 0.5tCLK – 7ns tLLAX A Address Hold After ALE LOW 0.5tCLK 0.5tCLK ns tLLIV A ALE LOW to Valid Instruction In 2.5tCLK – 35 2.5tCLK – 25 ns tLLPL A ALE LOW to PSEN LOW 0.5tCLK 0.5tCLK ns tPLPH A PSEN Pulse Width 2tCLK – 52tCLK – 5ns tPLIV A PSEN LOW to Valid Instruction In 2tCLK – 40 2tCLK – 30 ns tPXIX A Input Instruction Hold After PSEN 5 –5ns tPXIZ A Input Instruction Float After PSEN tCLK – 5tCLK ns tAVIV A Address to Valid Instruction In 3tCLK – 40 3tCLK – 25 ns tPLAZ A PSEN LOW to Address Float 0 0 ns Data Memory tRLRH B RD Pulse Width (tMCS = 0)(4) 2tCLK – 52tCLK – 5ns B RD Pulse Width (tMCS > 0)(4) tMCS – 5tMCS – 5ns tWLWH C WR Pulse Width (tMCS = 0)(4) 2tCLK – 52tCLK – 5ns C Pulse Width (tMCS > 0)(4) tMCS – 5tMCS – 5ns tRLDV B RD LOW to Valid Data In (tMCS = 0)(4) 2tCLK – 40 2tCLK – 30 ns B RD LOW to Valid Data In (tMCS > 0)(4) tMCS – 40 tMCS – 30 ns tRHDX B Data Hold After Read –5 –5ns tRHDZ B Data Float After Read (tMCS = 0)(4) tCLK tCLK ns B Data Float After Read (tMCS > 0)(4) 2tCLK 2tCLK ns tLLDV B ALE LOW to Valid Data In (tMCS = 0)(4) 2.5tCLK – 40 2.5tCLK – 25 ns B ALE LOW to Valid Data In (tMCS > 0)(4) tCLK + tMCS – 40 tCLK + tMCS – 25 ns tAVDV B Address to Valid Data In (tMCS = 0)(4) 3tCLK – 40 3tCLK – 25 ns B Address to Valid Data In (tMCS > 0)(4) 1.5tCLK +tMCS – 40 1.5tCLK +tMCS – 25 ns tLLWL B, C ALE LOW to RD or WR LOW (tMCS = 0)(4) 0.5tCLK – 5 0.5tCLK + 5 0.5tCLK – 5 0.5tCLK + 5 ns B, C ALE LOW to RD or WR LOW (tMCS > 0)(4) tCLK – 5tCLK + 5 tCLK – 5tCLK + 5 ns tAVWL B, C Address to RD or WR LOW (tMCS = 0)(4) tCLK – 5tCLK – 5ns B, C Address to RD or WR LOW (tMCS > 0)(4) 2tCLK – 52tCLK – 5ns tQVWX C Data Valid to WR Transition –8 –5ns tWHQX C Data Hold After WR tCLK – 8tCLK – 5ns tRLAZ B RD LOW to Address Float –0.5tCLK – 5 –0.5tCLK – 5ns tWHLH B, C RD or WR HIGH to ALE HIGH (tMCS = 0)(4) –55 –55 ns B, C RD or WR HIGH to ALE HIGH (tMCS > 0)(4) tCLK – 5tCLK + 5 tCLK – 5tCLK + 5 ns External Clock tHIGH D HIGH Time(5) 15 10 ns tLOW D LOW Time(5) 15 10 ns tR D Rise Time(5) 55 ns tF D Fall Time(5) 55 ns NOTES: (1) Parameters are valid over operating temperature range, unless otherwise specified. (2) Load capacitance for Port 0, ALE, and PSEN = 100pF, load capacitance for all other outputs = 80pF. (3) tCLK = 1/fOSC = one oscillator clock period for clock divider = 1. (4) tMCS is a time period related to the Stretch MOVX selection. The following table shows the value of tMCS for each stretch selection. (5) These values are characterized but not 100% production tested. |
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