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EPM7256AETC144-10N 数据表(PDF) 24 Page - Altera Corporation |
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EPM7256AETC144-10N 数据表(HTML) 24 Page - Altera Corporation |
24 / 64 page 24 Altera Corporation MAX 7000A Programmable Logic Device Data Sheet Programmable Speed/Power Control MAX 7000A devices offer a power-saving mode that supports low-power operation across user-defined signal paths or the entire device. This feature allows total power dissipation to be reduced by 50% or more because most logic applications require only a small fraction of all gates to operate at maximum frequency. The designer can program each individual macrocell in a MAX 7000A device for either high-speed (i.e., with the Turbo BitTM option turned on) or low-power operation (i.e., with the Turbo Bit option turned off). As a result, speed-critical paths in the design can run at high speed, while the remaining paths can operate at reduced power. Macrocells that run at low power incur a nominal timing delay adder (tLPA) for the tLAD, tLAC, tIC, tEN, tSEXP, tACL, and tCPPW parameters. Output Configuration MAX 7000A device outputs can be programmed to meet a variety of system-level requirements. MultiVolt I/O Interface The MAX 7000A device architecture supports the MultiVolt I/O interface feature, which allows MAX 7000A devices to connect to systems with differing supply voltages. MAX 7000A devices in all packages can be set for 2.5-V, 3.3-V, or 5.0-V I/O pin operation. These devices have one set of VCC pins for internal operation and input buffers (VCCINT), and another set for I/O output drivers (VCCIO). The VCCIO pins can be connected to either a 3.3-V or 2.5-V power supply, depending on the output requirements. When the VCCIO pins are connected to a 2.5-V power supply, the output levels are compatible with 2.5-V systems. When the VCCIO pins are connected to a 3.3-V power supply, the output high is at 3.3 V and is therefore compatible with 3.3-V or 5.0-V systems. Devices operating with VCCIO levels lower than 3.0 V incur a slightly greater timing delay of tOD2 instead of tOD1. Inputs can always be driven by 2.5-V, 3.3-V, or 5.0-V signals. Table 12 describes the MAX 7000A MultiVolt I/O support. Table 12. MAX 7000A MultiVolt I/O Support VCCIO Voltage Input Signal (V) Output Signal (V) 2.5 3.3 5.0 2.5 3.3 5.0 2.5 vvvv 3.3 vvv vv |
类似零件编号 - EPM7256AETC144-10N |
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类似说明 - EPM7256AETC144-10N |
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