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TC94A09F датащи(PDF) 11 Page - Toshiba Semiconductor |
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TC94A09F датащи(HTML) 11 Page - Toshiba Semiconductor |
11 / 19 page TC94A09F 2001-10-15 11 Pin Number Symbol Pin Name Function and Operation Remarks 91 HOLD Hold mode control input Input pin used to request or release hold state. Normally, the pin is used for inputting the CD mode selection signal or battery detection signal. Halt states are Clock Stop mode (crystal oscillator stops oscillation) and Wait mode (CPU stops). The modes are entered using the CKSTP and WAIT instructions. By program, Clock Stop mode can be entered by detection of Low level on the HOLD pin or by forced execution. Clock Stop mode can be released by detection of High level on the HOLD pin or change in the HOLD pin input. Executing the CKSTP instruction stops the clock generator and the CPU, entering memory backup state. During memory backup state, current dissipation becomes low (1 mA or below). The display output and CMOS output port automatically become Low level. The N-channel open drain output becomes off. Regardless of the HOLD pin input state, Wait mode is executed and current dissipation becomes low. Crystal oscillator only on or CPU operation suspended can be programmed. When the crystal oscillator only is on, all displays are at Low level. The other pins are in hold state. When CPU operation is suspended, all states are held except that the CPU is suspended. Wait mode is released by a change of the HOLD pin input. (Note) For Backup mode, use the oscillator connected to the MXO and MXI pins. Turn off the VDD pin (power supply for CD), and enter Backup mode. 92 INTR External interrupt input External interrupt input pin. When interrupts are enabled and a pulse of 1.11 to 3.33 ms or more (13.3 to 40 ms when the 75 kHz clock is used) is input to this pin, an interrupt is generated and the program jumps to address 1. Input logic and rising/falling edge can be individually selected for interrupt inputs. The internal 8-bit timer clock can be selected for interrupt inputs. Interrupts can be generated (address 3) by pulse count or the count value. Interrupt inputs are Schmidt inputs. The pin can be used as an input port for inputs such as remote control signals. MVDD |
Аналогичный номер детали - TC94A09F |
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Аналогичное описание - TC94A09F |
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