参数资料
型号: M4A5-96/48-55VC
厂商: LATTICE SEMICONDUCTOR CORP
元件分类: PLD
英文描述: High Performance E 2 CMOS In-System Programmable Logic
中文描述: EE PLD, 5.5 ns, PQFP100
封装: TQFP-100
文件页数: 4/62页
文件大小: 1078K
代理商: M4A5-96/48-55VC
12
ispMACH 4A Family
Note:
1. Polarity of CLK/LE can be programmed
Although the macrocell shows only one input to the register, the XOR gate in the logic allocator allows the
D-, T-type register to emulate J-K, and S-R behavior. In this case, the available product terms are divided
between J and K (or S and R). When configured as J-K, S-R, or T-type, the extra product term must be used
on the XOR gate input for flip-flop emulation. In any register type, the polarity of the inputs can be
programmed.
The clock input to the flip-flop can select any of the four PAL block clocks in synchronous mode, with the
additional choice of either polarity of an individual product term clock in the asynchronous mode.
The initialization circuit depends on the mode. In synchronous mode (Figure 7), asynchronous reset and
preset are provided, each driven by a product term common to the entire PAL block.
Table 8. Register/Latch Operation
Conguration
Input(s)
CLK/LE 1
Q+
D-type Register
D=X
D=0
D=1
0,1, ↓ (↑)
↑ (↓)
Q
0
1
T-type Register
T=X
T=0
T=1
0, 1, ↓ (↑)
↑ (↓)
Q
D-type Latch
D=X
D=0
D=1
1(0)
0(1)
Q
0
1
Power-Up
Reset
AP
D/T/L
AR
Q
PAL-Block
Initialization
Product Terms
a. Power-up reset
Power-Up
Preset
AP
D/L
PAL-Block
Initialization
Product Terms
AR
Q
17466G-012
17466G-013
Figure 7. Synchronous Mode Initialization Congurations
b. Power-up preset
相关PDF资料
PDF描述
M4A5-96/48-7VC High Performance E 2 CMOS In-System Programmable Logic
M4A5-96/48-7VI High Performance E 2 CMOS In-System Programmable Logic
M4A3-128/64-12VI High Performance E 2 CMOS In-System Programmable Logic
M4A3-128/64-12YI High Performance E 2 CMOS In-System Programmable Logic
M4A3-128/64-55CAC High Performance E 2 CMOS In-System Programmable Logic
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