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TC9257AFG датащи(PDF) 3 Page - Toshiba Semiconductor |
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TC9257AFG датащи(HTML) 3 Page - Toshiba Semiconductor |
3 / 34 page TC9256, 57APG/AFG 2006-07-14 3 Pin Function Pin No. Symbol Pin Name Function Circuit Diagram 1 XT 2 XT Crystal oscillator pins Connects a 3.6 MHz, 4.5 MHz, 7.2 MHz or 10.8 MHz crystal oscillator to supply reference frequency and internal clock. 3 PERIOD Period signal input 4 CLOCK Clock signal input 5 DATA Serial data input/output Serial I/O ports. These pins transfer data to and from the controller to set divisors and dividing modes, and to control the general-purpose counter and general-purpose I/O ports. 6 OT-1 7 OT-2 8 OT-3 9 ( ⎯) OT-4 General-purpose output ports N-channel open drain port pins, for such uses as control signal output. These pins are set to the OFF state when power is turned on. (On the TC9256APG and TC9256AFG, OT-4 can be used as a CMOS output pin by being switched with DO2.) 10 ( ⎯) I/O-5/CLK 11 ( ⎯) I/O-6 General-purpose I/O ports The CMOS structure allows free use of these ports for input or output. Ports are set for input when the power is turned on. On the TC9257APG and TC9257AFG, I/O-5 can be switched for use as a system clock output pin. 13 (10) AMIN 14 (11) FMIN Programmable counter input These pins input FM and AM band local oscillator signals.. These pins feature built-in amps. Connecting a capacitor permits low-amplitude operation. 16 (13) I/O-9 (-6) /IFIN2 17 (14) I/O-8 (-5) /IFIN1 General-purpose I/O ports /General-purpose counter frequency measurement input General-purpose I/O port input/output pins. Can be switched for use as input pins to measure general-purpose counter frequencies. The frequency measurement function has such uses as measuring intermediate frequencies (IF). These pins feature built-in amps. Connecting a capacitor permits low-amplitude operation. Note: These pins are set for input when power is turned on. |
Аналогичный номер детали - TC9257AFG |
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Аналогичное описание - TC9257AFG |
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