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S80L186EB16 Datasheet(PDF) 34 Page - InnovASIC, Inc |
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S80L186EB16 Datasheet(HTML) 34 Page - InnovASIC, Inc |
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34 / 85 page  IA186EB/IA188EB Data Sheet 8-Bit/16-Bit Microcontrollers July 10, 2011 IA211080314-13 http://www.Innovasic.com UNCONTROLLED WHEN PRINTED OR COPIED Customer Support: Page 34 of 85 1-888-824-4184 2.3 IA188EB Pin/Signal Descriptions Descriptions of the pin and signal functions for the IA188EB microcontroller are provided in Table 8. Several of the IA188EB pins have different functions depending on the operating mode of the device. Each of the different signals supported by a pin is listed and defined in Table 8— indexed alphabetically in the first column of the table. Additionally, the name of the pin associated with the signal as well as the pin numbers for the PLCC, LQFP, and LQFP packages are provided in the ―Pin‖ column. Table 8. IA188EB Pin/Signal Descriptions Signal Pin Description Name PLCC LQFP PQFP a8 a8 62 48 11 address Bits [8-19]. Output. These pins provide the 12 most-significant bits of the Address Bus. During the entire IA188EB bus cycle, Address Bits [8 –19] are presented on the bus and can be latched using the ale signal (see table entry). a9 a9 67 53 16 a10 a10 69 55 18 a11 a11 71 57 20 a12 a12 73 59 22 a13 a13 75 61 24 a14 a14 77 63 26 a15 a15 79 65 28 a16 a16 80 66 29 a17 a17 81 67 30 a18 a18 82 68 31 a19 a19/once_n 83 69 32 ad0 ad0 61 47 10 address/data Bits [0 –7]. Input/Output. These pins provide a multiplexed Address Bus and Data Bus. During the address portion of the IA188EB bus cycle, Address Bits [0 –7] are presented on the bus and can be latched using the ale signal (see next table entry). During the data portion of the IA188EB bus cycle, 8-bit data are present on these lines. ad1 ad1 66 52 15 ad2 ad2 68 54 17 ad3 ad3 70 56 19 ad4 ad4 72 58 21 ad5 ad5 74 60 23 ad6 ad6 76 62 25 ad7 ad7 78 64 27 ale ale 6 75 38 address latch enable. Output. Active High. This signal is used to latch the address information during the address portion of a bus cycle. bclk0 p2.5/bclk0 54 41 4 baud clock, Serial Port 0. Input. The bclk0 pin can be used to provide an alternate clock source for Serial Port 0. The input clock rate cannot be greater than one-half the operating frequency of the IA188EB. |
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