參數(shù)資料
型號: 8412904XA
廠商: TEXAS INSTRUMENTS INC
元件分類: PLD
英文描述: OT PLD, 25 ns, CQCC28
封裝: CERAMIC, LCC-28
文件頁數(shù): 5/25頁
文件大?。?/td> 458K
代理商: 8412904XA
TIBPAL20L8-15C, TIBPAL20R4-15C, TIBPAL20R6-15C, TIBPAL20R8-15C
TIBPAL20L8-20M, TIBPAL20R4-20M, TIBPAL20R6-20M, TIBPAL20R8-20M
HIGH-PERFORMANCE
IMPACT PAL CIRCUITS
SRPS021A D2920, JUNE 1986 REVISED DECEMBER 2010
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
13
programming information
Texas Instruments programmable logic devices can be programmed using widely available software and
inexpensive device programmers.
Complete programming specifications, algorithms, and the latest information on hardware, software, and
firmware are available upon request. Information on programmers capable of programming Texas Instruments
programmable logic is also available, upon request, from the nearest TI field sales office, local authorized TI
distributor, or by calling Texas Instruments at (214) 997-5666.
preload procedure for registered outputs (see Figure 1 and Notes 2 and 3)
The output registers can be preloaded to any desired state during device testing. This permits any state to be
tested without having to step through the entire state-machine sequence. Each register is preloaded individually
by following the steps given below.
Step 1.
With VCC at 5 volts and Pin 1 at VIL, raise Pin 13 to VIHH.
Step 2.
Apply either VIL or VIH to the output corresponding to the register to be preloaded.
Step 3.
Pulse Pin 1, clocking in preload data.
Step 4.
Remove output voltage, then lower Pin 13 to VIL. Preload can be verified by observing the
voltage level at the output pin.
td
tsu
tw
td
VIHH
VIL
VOL
VOH
VIH
Pin 13
Pin 1
Registered I/O
Input
Output
VIH
VIL
Figure 1. Preload Waveforms
NOTES: 2. Pin numbers shown are for JT, NT, and W packages only. If chip carrier socket adapter is not used, pin numbers must be changed
accordingly.
3. td = tsu = th = 100 ns to 1000 ns VIHH = 10.25 V to 10.75 v
相關(guān)PDF資料
PDF描述
8412903LX OT PLD, 30 ns, CDIP24
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84129043X OT PLD, 30 ns, CQCC28
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