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MAX3000A_06 Datasheet(数据表) 12 Page - Altera Corporation |
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MAX3000A Datasheet(HTML) 12 Page - Altera Corporation |
12 page ![]() 12 Altera Corporation MAX 3000A Programmable Logic Device Family Data Sheet Figure 6. I/O Control Block of MAX 3000A Devices Note: (1) EPM3032A, EPM3064A, EPM3128A, and EPM3256A devices have six output enables. EPM3512A devices have 10 output enables. When the tri–state buffer control is connected to ground, the output is tri-stated (high impedance), and the I/O pin can be used as a dedicated input. When the tri–state buffer control is connected to VCC, the output is enabled. The MAX 3000A architecture provides dual I/O feedback, in which macrocell and pin feedbacks are independent. When an I/O pin is configured as an input, the associated macrocell can be used for buried logic. from Macrocell Slew-Rate Control to PIA to Other I/O Pins 6 or 10 Global Output Enable Signals (1) PIA VCC Open-Drain Output OE Select Multiplexer GND |