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M306V2EEFS датащи(PDF) 98 Page - Renesas Technology Corp |
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M306V2EEFS датащи(HTML) 98 Page - Renesas Technology Corp |
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98 / 271 page ![]() Rev.1.40 Oct 06, 2004 page 98 of 269 M306V2ME-XXXFP, M306V2EEFP (4) TB0IN noise filter The input signal of pin TB0IN has the noise filter. The ON/OFF of noise filter and selection of filter clock are set by bits 2 to 4 of the peripheral mode register. Note: When using the noise filter, set bit 7 of the peripheral mode register according to the main clock frequency. Figure 2.10.28 Peripheral mode register Peripheral mode register SymbolAddressWhen reset PM027D16 0XX000002 Bit name Function Bit symbol W R b7b6b5b4b3b2b1b0 0 0 : None 0 1 : SCL1, SDA1 1 0 : SCL2, SDA2 1 1 : SCL1 and SDA1, SCL2 and SDA2 b1 b0 NFON BSEL0 Clock selection bits of TB0IN noise filter (Note) ON/OFF selection bit of TB0IN pin noise filter I2C-BUS interface port selection bits BSEL1 WSEL0 WSEL1 b3 b2 0 0 : 0.25 µs (removed bus width: max 0.75 µs) 0 1 : 8 µs (removed bus width: max 24 µs) 1 0 : 16 µs (removed bus width: max 48 µs) 1 1 : 32 µs (removed bus width: max 96 µs) 0 : Noise filter OFF 1 : Noise filter ON SSCK Main clock frequency selection bit 0 : f(XIN) = 10 MHZ 1 : f(XIN) = 16 MHZ Note: The operation of MCU is not guaranteed when f(XIN) = 16 MHz. Nothing is assigned. In an attempt to write to this bit, write “0.” The value, if read, turns out to be indeterminate. |
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