TIBPLS506AC Datasheet, PDF (9/16 Pages) Texas Instruments – 13 × 97 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER

TIBPLS506AC
13 × 97 × 8 FIELD-PROGRAMMABLE LOGIC SEQUENCER
SRPS003C – D3090, DECEMBER 1987 – REVISED NOVEMBER 1995
tpd(1) = 20 ns
tpd(2) = 10 ns
tpd(3) = 25 ns
PARAMETER VALUES FOR TIMING MODEL
tsu(1) = 12 ns†
tsu(2) = 12 ns†
tsu(a) = 25 ns
tsu(b) = 25 ns
tmin(1) = 20 ns
tmin(2) = 20 ns
tmin(3) = 25 ns
tmin(c) = 25 ns
INTERNAL NODE NUMBERS
Q0-Q7
RESET 25-32
P0-P15
C0
65
C1
66
† _{Use tsu = 20 ns for applications where the setup time for S/R↓ inputs are required.}
SET 33-48
RESET 49-64
diagnostics
A diagnostic mode is provided with these devices that allows the user to inspect the contents of the state
registers. The step-by-step procedures required to use the diagnostics follow.
Step 1.
Step 2.
Step 3.
Disable all outputs by taking pin 17 (OE) high (see Note 4).
Take pin 8 (Q0) to V_IHH to enable the diagnostics test sequence.
Apply appropriate levels of voltage to pins 11 (Q3), 13 (Q4), and 14 (Q5) to select the desired
state register (see Table 1).
The voltage level monitored on pin 9 will indicate the state of the selected state register.
NOTE 4: If pin 17 is being used as an input to the array, then pin 7 (I5) must be taken to VIHH before pin 17 is taken high.
VIHH†
I5
Pin 7
OE
Pin 17
100 ns
Q0
Pin 8
100 ns
Q3, Q4, Q5
Pins 11, 13, 14
Q1
Pin 9
† _{VIHH = 10.25 V min, 10.5 V nom, 10.75 V max}
100 ns
Figure 2. Diagnostics Waveforms
VIH
VOHH
VOH
VOL
VOHH
VOH
VOL
VOH
VOL
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