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COP325C Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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COP325C Datasheet(HTML) 4 Page - National Semiconductor (TI) |
4 / 24 page COP424CCOP425CCOP426C and COP444CCOP445C AC Electrical Characteristics 0 CsTAs70 C unless otherwise specified Parameter Conditions Min Max Units Instruction Cycle Time (tc) VCCt45V 4 DC m s 45VlVCCt24V 16 DC m s Operating CKI d 4 mode DC 10 MHz Frequency d 8 mode VCCt45V DC 20 MHz d 16 mode ( DC 40 MHz d 4 mode DC 250 kHz d 8 mode 45VlVCCt24V DC 500 kHz d 16 mode ( DC 10 MHz Duty Cycle (Note 4) f1e4 MHz 40 60 % Rise Time (Note 4) f1e4 MHz External Clock 60 ns Fall Time (Note 4) f1e4 MHz External Clock 40 ns Instruction Cycle Time Re30k g5% VCC e 5V 511 m s RC Oscillator (Note 4) Ce82 pF g5% (d4 Mode) Inputs (See Figure 3 ) tSETUP G Inputs tc4a 7 m s SI Input VCCt 45V 03 m s All Others ( 17 m s tHOLD VCCt 45V 025 m s 45VlVCCt24V 10 m s Output Propagation Delay VOUTe15V CLe100 pF RLe5k tPD1 tPD0 VCCt 45V 10 m s tPD1 tPD0 45VlVCCt24V 40 m s Microbus Timing CLe50 pF VCCe5Vg5% Read Operation ( Figure 4 ) Chip Select Stable before RD btCSR 65 ns Chip Select Hold Time for RD btRCS 20 ns RD Pulse WidthbtRR 400 ns Data Delay from RD btRD 375 ns RD to Data Floating btDF (Note 4) 250 ns Write Operation ( Figure 5 ) Chip Select Stable before WR btCSW 65 ns Chip Select Hold Time for WR btWCS 20 ns WR Pulse WidthbtWW 400 ns Data Set-Up Time for WR btDW 320 ns Data Hold Time for WR btWD 100 ns INTR Transition Time from WR btWI 700 ns Note 1 Supply current is measured after running for 2000 cycle times with a square-wave clock on CKI CKO open and all other pins pulled up to VCC with 5k resistors See current drain equation on page 17 Note 2 The HALT mode will stop CKI from oscillating in the RC and crystal configurations Test conditions all inputs tied to VCC L lines in TRI-STATE mode and tied to ground all outputs low and tied to ground Note 3 When forcing HALT current is only needed for a short time (approx 200 ns) to flip the HALT flip-flop Note 4 This parameter is only sampled and not 100% tested Variation due to the device included Note 5 Voltage change must be less than 05 volts ina1ms period Note 6 SO output sink current must be limited to keep VOL less than 02VCC when part is running in order to prevent entering test mode 4 |
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Similar Description - COP325C |
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