TIB82S167BC Datasheet, PDF (7/11 Pages) Texas Instruments – 14 × 48 × 6 FIELD-PROGRAMMABLE LOGIC SEQUENCER WITH 3-STATE OUTPUTS OR PRESET

TIB82S167BC
14 × 48 × 6 FIELD-PROGRAMMABLE LOGIC SEQUENCER
WITH 3-STATE OUTPUTS OR PRESET
SRPS026A – D2896, JANUARY 1985 – REVISED NOVEMBER 1995
test array
A test array that consists of product lines 48 and 49 has been added to these devices to allow testing prior to
programming. The test array is factory programmed as shown in Table 1. Testing is accomplished by connecting
Q0 – Q3 to I10 – I13, PRE/OE to GND, and applying the proper input signals as shown in Figure 2. Product lines
48 and 49 must be deleted during user programming to avoid interference with the programmed logic function.
Table 1. Test Array Program
AND
OPTION PRE/OE
H
OR
PRODUCT
LINE C C 1 1 1 1 1 1
INPUT
(In)
PRESENT STATE NEXT STATE
(PS)
(NS)
OUT
(Qn)
543210987654321054321054321076543210
48
X –HHHHHHHHHHHHHHHHHHHHHHL L L L L L L L L L L L L L
49
– X L L L L L L L L L L L L L L L L L L L L L LHHHHHHHHHHHHHH
VCC
CLK
I0 – I9
Q0 – Q3
Internal
State Register
P0 – P7
tw
tsu
th
tpd
tpd
Figure 2. Test Array Waveforms
5V
0V
VIH
VIL
VIH
VIL
tpd
VOH
VOL
HIGH
LOW
Table 2. Test Array Deleted
AND
OPTION PRE/OE
H
OR
PRODUCT
LINE C C 1 1 1 1 1 1
INPUT
(In)
PRESENT STATE NEXT STATE
(PS)
(NS)
OUT
(Qn)
543210987654321054321054321076543210
48
– –HHHHHHHHHHHHHHHHHHHHHH– – – – – – – – – – – – – –
49
–XLLLLLLLLLLLLLLLLLLLLLL––––––––––––––
X = Fuse intact, – = Fuse blown
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