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TIB82S167B
14 x 48 x 6 FIELD·PROGRAMMABLE LOGIC SEOUENCER
WITH 3·STATE OUTPUTS OR PRESET
programming waveforms
---"'" r--------------------, ,.---VIH
FUSE ADDRESS X X
----':: ~---VIL
~ td 14- --.t td 14--
VCC _____ J!i:
~l------:::'
P/v
-+I td~ :+-
~ ---1 i - - - ---- VIH
td~ 14-1 i I
1 I 1 1
VIL
-1- - - i---~- -I- -; _1- - - - - - - VIHH
1 I 1 1
PGM ENABLE
I I
I I
I
I
I I
I I
I 1 td--.l:'- 1 I GND
td~ 14- I -+I J4-td 1 1
______--111-__"""'1 1 I 1 I: v
PGM
programming procedure for PRE/OE option
: U ! \-J-:-------v:~
1 'I 1 1 1 I
I tw'~ i+- ,--.. J+-tw2
1 1 I
1oiI14f----PROGRAM--.. _1144-VERIFY -+t
PROGRAM
Step 1: With PGM at GND, raise Vee to Vee1.
Step 2: Wait td, pulse PGM to VIX for a duration of t w 1.
Step 3: A td delay after PGM has returned to GND, lower Vee to 5 volts or GND.
VERIFY
Step 1: With PGM at GND, set Vee to 5 volts.
Step 2: After a delay of td, raise PGM to VIX for a minimum duration of t w 2.
Step 3: Return PGM to GND.
Step 4: Wait td, pulse PGM to VIH for a duration of t w 2.
Step 5: After a td delay, 00 indicates VOH if the PRE option is selected and VOL if the OE option is
programmed.
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programming waveforms for PRE/OE option
vcc~
PGM
---.! td 14-
I 1
I
I
1
I
I - - - - - - - - - - - - - - - ~~~'
I
~ td r4"" -+t td I+l~tdl4-
I I
I I 1 I
- T - - - - - - - - - - - VIX
,
- - - - - - - - - - VIH
~-------VIL
---;~~~~~~~~~~~~~--------VOH
00 See Note A
NOTE A: After programming if the PRE option is selected. 00 will be high; if the output-enable option is selected. the output will be low.
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INSTRUMENTS
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