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EPM7160E 数据表(PDF) 21 Page - Altera Corporation |
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EPM7160E 数据表(HTML) 21 Page - Altera Corporation |
21 / 66 page Altera Corporation 21 MAX 7000 Programmable Logic Device Family Data Sheet By using an external 5.0-V pull-up resistor, output pins on MAX 7000S devices can be set to meet 5.0-V CMOS input voltages. When VCCIO is 3.3 V, setting the open drain option will turn off the output pull-up transistor, allowing the external pull-up resistor to pull the output high enough to meet 5.0-V CMOS input voltages. When VCCIO is 5.0 V, setting the output drain option is not necessary because the pull-up transistor will already turn off when the pin exceeds approximately 3.8 V, allowing the external pull-up resistor to pull the output high enough to meet 5.0-V CMOS input voltages. Slew-Rate Control The output buffer for each MAX 7000E and MAX 7000S I/O pin has an adjustable output slew rate that can be configured for low-noise or high-speed performance. A faster slew rate provides high-speed transitions for high-performance systems. However, these fast transitions may introduce noise transients into the system. A slow slew rate reduces system noise, but adds a nominal delay of 4 to 5 ns. In MAX 7000E devices, when the Turbo Bit is turned off, the slew rate is set for low noise performance. For MAX 7000S devices, each I/O pin has an individual EEPROM bit that controls the slew rate, allowing designers to specify the slew rate on a pin-by-pin basis. Programming with External Hardware MAX 7000 devices can be programmed on Windows-based PCs with the Altera Logic Programmer card, the Master Programming Unit (MPU), and the appropriate device adapter. The MPU performs a continuity check to ensure adequate electrical contact between the adapter and the device. f For more information, see the Altera Programming Hardware Data Sheet. The Altera development system can use text- or waveform-format test vectors created with the Text Editor or Waveform Editor to test the programmed device. For added design verification, designers can perform functional testing to compare the functional behavior of a MAX 7000 device with the results of simulation. Moreover, Data I/O, BP Microsystems, and other programming hardware manufacturers also provide programming support for Altera devices. f For more information, see the Programming Hardware Manufacturers. |
类似零件编号 - EPM7160E |
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类似说明 - EPM7160E |
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