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PXA270 Datasheet(PDF) 54 Page - Intel Corporation |
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PXA270 Datasheet(HTML) 54 Page - Intel Corporation |
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54 / 126 page  5-4 Electrical, Mechanical, and Thermal Specification Intel® PXA270 Processor Electrical Specifications Table 5-3. Memory Voltage and Frequency Electrical Specifications Table 5-4 shows the supported core frequency and core supply voltage operating ranges for the PXA270 processor. Each frequency range is specified in the following format: (core frequency/internal system bus frequency/memory controller frequency/SDRAM frequency) Note: Refer to the “Clocks and Power” section of the Intel® PXA27x Processor Family Developers Manual for supported frequencies, clock register settings as listed in Table 5-4. Symbol Description Min Typical Max Units Memory Voltage and Frequency Range 1 VMEM1 Voltage applied on VCC_MEM 1.71 1.80 2.16 V fSM1A External synchronous memory frequency, SDCLK1, SDCLK2 13 — 104 MHz fSM1B External synchronous memory frequency, SDCLK0 13 — 104 MHz Tsysramp Ramp Rate — 10 12 mV/uS Memory Voltage and Frequency Range 2 VMEM2 Voltage applied on VCC_MEM 2.25 2.50 2.75 V fSM2A External synchronous memory frequency, SDCLK1, SDCLK2 13 — 104 MHz fSM2B External synchronous memory frequency, SDCLK0 13 — 104 MHz Tsysramp Ramp Rate — 10 12 mV/uS Memory Voltage and Frequency Range 3 VMEM3 Voltage applied on VCC_MEM 2.70 3.0 3.3 V fSM3A External synchronous memory frequency, SDCLK1, SDCLK2 13 — 104 MHz fSM3B External synchronous memory frequency, SDCLK0 13 — 104 MHz Tsysramp Ramp Rate — 10 12 mV/uS Memory Voltage and Frequency Range 4 VMEM4 Voltage applied on VCC_MEM 2.97 3.30 3.63 V fSM4A External synchronous memory frequency, SDCLK1, SDCLK2 13 — 104 MHz fSM4B External synchronous memory frequency, SDCLK0 13 — 104 MHz Tsysramp Ramp Rate — 10 12 mV/uS Table 5-4. Core Voltage and Frequency Electrical Specifications (Sheet 1 of 2) Symbol Description Min Typical Max Units Core Voltage and Frequency Range 1 (13/13/13/13) VVCCC1 Voltage applied on VCC_CORE 0.8075 0.85 1.705 V fCORE1 Core operating frequency 13 — 13 MHz Tpwrramp Ramp Rate — 10 12 mV/uS |
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