CDP1851 View Datasheet(PDF) - Intersil
Part Name
Description
Manufacturer
CDP1851 Datasheet PDF : 14 Pages
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CDP1851, CDP1851C
Test Circuit and Waveforms
VDD
A INT
B INT
CDP1851
1kΩ
1kΩ
50pF
A
50pF
B
INPUT
SIGNAL
A, B
50%
10%
tPINT
tWINT
50%
50%
tSTINT
FIGURE 5. INTERRUPT SIGNAL PROPAGATION DELAY TIME TEST CIRCUIT AND WAVEFORMS
RDY
INT
STROBE
DATA-IN
tSTRDY
tWST
tSTINT
tDIST
tHSTDI
tTPRDY
tPINT
tWTPB
TPB
CLOCK = (TPA)
tWCL
tCSCL
CS
WR/RE = (MRD)
tWRCL
RD/WE = (MWR)
MEMORY SPACE
tRWCL
tHCSCL
RD/WE = (MRD)
WR/RE = (TPB)
I/O SPACE
RA1/RA0
DATA BUS
tHATPB
VALID PORT ADDRESS
IO OR II
tADA
tHADOH
FIGURE 6. INPUT MODE TIMING WAVEFORMS
4-15
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