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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SX28AC/DP датащи(PDF) 16 Page - Parallax Inc |
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SX28AC/DP датащи(HTML) 16 Page - Parallax Inc |
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16 / 51 page  Parallax SX20AC/SX28AC www.parallax.com © Parallax Inc. Page 16 of 51 Rev 1.6 11/20/2006 5.2. FUSEX Word (Read/Program via Programming Command) IRCTRIM2 PINS IRCTRIM1 IRCTRIM0 / OPTIONX STACKX CF BOR1 BOR0 BORTR1 BORTR0 BP1 BP0 Bit 11 Bit 0 IRCTRIM2: Internal RC oscillator trim bits. This 3-bit field adjusts the operation of the internal RC oscillator to make it operate within the target frequency range 4 MHz plus or minus 8%. Parts are shipped from the factory untrimmed. The device relies on the programming to0l to provide the trimming function. 000b = minimum frequency 111b = maximum frequency each step about 3% PINS Selects the number of pins. 0 = 18/20 pins 1 = 28 pins / OPTIONX OPTION Register Extension and Stack Extension. Set to 1 to disable the programmability of bit 6 and bit 7 in the OPTION register, the RTW and RTE_IE bits (in other words, to force these two bits to 1) and to limit the program stack size to two locations. Clear to 0 to enable programming of the RTW and RTE_IE bits in the OPTION register, and to extend the stack size to eight locations. CF Active low - makes carry bit input to ADD and SUB instructions. BOR1: BOR0 Brown-Out Reset: These bits enable or disable the brown-out reset function and set the brown-out threshold voltage as follows: 00b = 4.2 V 01b = 2.6 V 10b = 2.2 V 11b = Brown-Out disabled BORTR1: Brown-Out trim bits (parts are shipped out of factory untrimmed). BORTR0 01b = minimum threshold voltage 00b = LOW 11b = HIGH 10b = maximum threshold voltage BP1:BPO 00b = 1 page, 1 bank 01b = 2 pages, 1 bank 10b = 4 pages, 4 banks 11b = 4 pages, 8 banks (default configuration) 5.3. DEVICE Word (Hard-Wired Read-Only) 1 1 1 1 1 1 0 0 1 1 1 0 Bit 11 Bit 0 STACKX 0 IRCTRIM |
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