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TC9328AF Datasheet(PDF) 6 Page - Toshiba Semiconductor |
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TC9328AF Datasheet(HTML) 6 Page - Toshiba Semiconductor |
6 / 84 page TC9328AF 2002-02-07 6 Pin No. Symbol Pin Name Function and Operation Remarks 36~39 P4-0/BUZR P4-1/SI P4-2/SO P4-3/SCK I/O port 4 /Buzzer output /Serial data input /Serial data output /Serial clock I/O 4-bit I/O ports, allowing input and output to be programmed in 1-bit units. The P4-0 pin is also used for buzzer output. P4-1 to P4-3 are also used as serial interface circuit (SIO) input / output pins. The buzzer output can select 8 kinds of 0.625 to 3 kHz frequencies with 4 modes: continuous output, single-shot output, 10 Hz intermittent output, and 10 Hz intermittent 1 Hz interval output. SIO functions for 4-bit or 8-bit serial data inputs from the SI pin and outputs from the SO pin at the SCK pin clock edge. The clock for serial operation (SCK) is capable of internal (SCK = 37.5 kHz)/ external options and rise/fall shift options. The SO pin is also capable of switching to serial inputs (SI), facilitating the control of various LSI’s and communication between controllers. When SIO interrupts are enabled, an interrupt is generated after SIO execution and the program jumps to address 4. This is useful for high-speed serial communications. All SIO inputs use built-in Schmitt circuits. P3-3 pins also functions as the output for a built-in buzzer. SIO, buzzer, and all associated controls can be programmed. 40 MUTE Muting output port 1-bit output port, normally used for muting control signal output. This pin can set the internal MUTE bit to “1” according to a change in the input of I/O port 1 and HOLD . MUTE bit output logic can be changed. 41 TEST Test mode control input Input pin used for controlling TEST mode. “H” (high) level indicates TEST mode, while “L” (low) indicates normal operation. The pin is normally used at low level or in NC (no connection) state. (A pull-down resistor is builtin). VDD VDD RIN2 Input instruction + SIOon (P4-1~P4-3) VDD (P4-0) Input instruction VDD |
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