參數(shù)資料
型號(hào): TIBPAL22V10CFN
廠商: Texas Instruments, Inc.
英文描述: HIGH-PERFORMANCE IMPACT E PROGRAMMABLE ARRAY LOGIC CIRCUITS
中文描述: 高性能的位置影響可編程陣列邏輯電路
文件頁(yè)數(shù): 2/17頁(yè)
文件大?。?/td> 158K
代理商: TIBPAL22V10CFN
TIBPAL22V10C, TIBPAL22V10AC, TIBPAL22V10AM
HIGH-PERFORMANCE
IMPACT
PROGRAMMABLE ARRAY LOGIC CIRCUITS
SRPS024 – D2943, OCTOBER 1986 – REVISED MARCH 1992
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2
description (continued)
Further advantages can be seen in the introduction of variable product term distribution. This technique
allocates from 8 to 16 logical product terms to each output for an average of 12 product terms per output. This
variable allocation of terms allows far more complex functions to be implemented than in previously available
devices.
Circuit design is enhanced by the addition of a synchronous set and an asynchronous reset product term. These
functions are common to all registers. When the synchronous set product term is a logic 1, the output registers
are loaded with a logic 1 on the next low-to-high clock transition. When the asynchronous reset product term
is a logic 1, the output registers are loaded with a logic 0. The output logic level after set or reset depends on
the polarity selected during programming. Output registers can be preloaded to any desired state during testing.
Preloading permits full logical verification during product testing.
With features such as programmable output logic macrocells and variable product term distribution, the
TIBPAL22V10 and TIBPAL22V10A offer quick design and development of custom LSI functions with
complexities of 500 to 800 equivalent gates. Since each of the ten output pins may be individually configured
as inputs on either a temporary or permanent basis, functions requiring up to 21 inputs and a single output or
down to 12 inputs and 10 outputs are possible.
A power-up clear function is supplied that forces all registered outputs to a predetermined state after power is
applied to the device. Registered outputs selected as active-low power up with their outputs high. Registered
outputs selected as active-high power up with their outputs low.
A single security fuse is provided on each device to discourage unauthorized copying of fuse patterns. Once
blown, the verification circuitry is disabled and all other fuses will appear to be open.
The TIBPAL22V10C and TIBPAL22V10AC are characterized for operation from 0
°
C to 75
°
C. The
TIBPAL22V10AM is characterized for operation over the full military temperature range of –55
°
C to125
°
C.
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