CDP1802BCEX datasheet(15/27 Pages) INTERSIL

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3-17

FIGURE 14. INTERRUPT CYCLE TIMING WAVEFORMS

Performance Curves

FIGURE 15. CDP1802A, AC TYPICAL MAXIMUM CLOCK

FREQUENCY AS A FUNCTION OF TEMPERATURE

FIGURE 16. CDP1802BC TYPICAL MAXIMUM CLOCK

FREQUENCY AS A FUNCTION OF TEMPERATURE

Machine Cycle Timing Waveforms (Propagation Delays Not Shown) (Continued)

01234567012345670123456

CLOCK

TPA

TPB

MACHINE

CYCLE

INSTRUCTION

CYCLE n

CYCLE (n + 1)

CYCLE (n + 2)

INTERRUPT (S3)

EXECUTE (S1)

FETCH (S0)

MRD

MWR

INTERRUPT

MEMORY

OUTPUT

VALID OUTPUT

NOTE 1

MEMORY READ CYCLE

MEMORY READ, WRITE

NON-MEMORY CYCLE

OR NON-MEMORY CYCLE

“DON’T CARE” OR INTERNAL DELAYS

HIGH IMPEDANCE STATE

(NOTE 1)

(INTERNAL) IE

USER GENERATED SIGNAL

105

115

125

TA, AMBIENT TEMPERATURE (

oC)

CL, LOAD CAPACITANCE = 50pF

VCC = VDD = 10V

VCC = 5V, VDD = 10V

VCC = VDD = 5V

CL, LOAD CAPACITANCE = 50pF

VCC = VDD = 5V

105

115

125

TA, AMBIENT TEMPERATURE (

oC)

CDP1802A, CDP1802AC, CDP1802BC

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