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TB62217AFG Datasheet(PDF) 30 Page - Toshiba Semiconductor |
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TB62217AFG Datasheet(HTML) 30 Page - Toshiba Semiconductor |
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30 / 61 page  TB62217AFG 2004-11-12 30 Functions of External Input Pins (1) PHASE Input Pin (PHASE X) This pin indicates the polarity of the H switch used in driving a DC motor. PWM can be applied by performing time control (duty control) on this pin. Pin No. Name Function Logical Level Setting Phase L OUT X: L, OUT X-: H 61 64 62 63 PHASE SA SB SC SD Switches phase H OUT X: H, OUT X-: L (2) ENABLE Input Pin (ENABLE X) This pin indicates whether to supply the power to a DC motor to be driven. Pin No. Name Function Logical Level Setting Enable L OFF (All transistors for the H switch are off.) 54 53 50 49 ENABLE SA SB SC SD Whether to activate the output H Active (3) SLEEP Input Pin When the level of this pin is switched from high to low or low to high, all motor drive registers are cleared (all bits of the 16-bit latch for selecting a motor drive are cleared to low). After the IC is shut down in motor ISD operation, changing the SLEEP signal from high to low and to high again causes the IC to return to normal. Pin No. Name Function Logical Level Setting Sleep L Power consumption reduction mode and initial setup mode 1 SLEEP Power saving mode H Motor operation mode (4) C_SELECT Input Pin This pin determines which DC-DC converter to run (ON-OFF combinations) when the power is turned on. Pin No. Name Function Logical Level Setting Phase Low A ch: OFF B ch: OFF C ch: OFF Mid A ch: ON B ch: ON C ch: OFF 48 C_SELECT DC-DC converter mode at start High A ch: OFF B ch: ON C ch: ON Note: If the C_SELECT pin is on the mid level, channel B is turned on before channel A. If it is high, channel B is turned on before channel C. |
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