IC-NG Datasheet, PDF (7/21 Pages) IC-Haus GmbH – 8-BIT Sin/D CONVERTER-PROCESSOR

iC-NG
8-BIT Sin/D CONVERTER-PROCESSOR
OPERATING REQUIREMENTS: Logic
Operating conditions: VCC= 5V ±10%, Ta= -20..70°C, CL()= 150pF,
input levels lo= 0..0.45V, hi= 2.4V..VCC, see Fig. 2 for reference levels and waveforms
Item Symbol Parameter
Conditions
Read cycle
I1 tRD
I2 tDF
I3 tRL
Read Data Access Time:
data valid after NRD hi6lo
1^st access with latching NG and
COUNT data
ongoing access
Read Data Hold Time:
ports high impedance after NRD lo6hi
Required Read Signal Duration
at NRD
SSI signal
Write cycle
I4 tDW
Write Data Setup Time:
data valid before NWR lo6hi
I5 tWD
Write Data Hold Time:
data valid after NWR lo6hi
I6 tWL
Required Write Signal Duration
at NWR
Write / read timing
I7 tcyc
Recovery Time between Cycles:
NRD lo6hi to NRD hi6lo,
NRD lo6hi to NWR hi6lo,
NWR lo6hi to NWR hi6lo,
NWR lo6hi to NRD hi6lo
Rev D3, Page 7/21
Fig.
Min.
Unit
Max.
3
1.5x
td(CLK)
120
ns
3
65
ns
3
200
ns
2.5x
td(CLK)
3
100
ns
3
10
ns
3
200
ns
3
2×
ns
td(CLK)
Fig. 2: reference levels
Fig. 3: read / write timing