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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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IMX28CEC датащи(PDF) 60 Page - Freescale Semiconductor, Inc |
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IMX28CEC датащи(HTML) 60 Page - Freescale Semiconductor, Inc |
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60 / 70 page  i.MX28 Applications Processors Data Sheet for Consumer Products, Rev. 1 60 Freescale Semiconductor 4 Package Information and Contact Assignments 4.1 289-Ball MAPBGA—Case 14 x 14 mm, 0.8 mm Pitch The following notes apply to Figure 44: • All dimensions are in millimeters. • Dimensioning and tolerancing per ASME Y14.5M-1994. • Maximum solder bump diameter measured parallel to datum A. • Datum A, the seating plane, is determined by the spherical crowns of the solder bumps. • Parallelism measurement excludes any effect of mark on top surface of package. Table 64. UART Receive Timing Parameters ID Parameter Symbol Min. Max. Units UA2 Receive bit time1 1 The UART receiver can tolerate 1/(16 × F baud_rate) tolerance in each bit. But accumulation tolerance in one frame must not exceed 3/(16 × F baud_rate). tRbit 1/Fbaud_rate 2 – 1/(16 × F baud_rate) 2 F baud_rate: Baud rate frequency. The maximum baud rate the UARTAPP can support is 3.25 Mbps. The maximum baud rate of DebugUART is 115 kbps. 1/Fbaud_rate + 1/(16 × F baud_rate) — |
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