ML22Q533 datasheet(172/178 Pages) ROHM

172 / 178 page

FEDL22Q53X-02

ML22Q53X

■ Check lists

This check list has notes to frequently overlooked or misunderstood hardware features of the LSI. Check each note listed up

chapter by chapter while coding the program or evaluating it using the LSI.

■Feature

[ ] *1 Mixing with SAI is limited by the sampling frequency. Refer to the "Function description".

[ ] *2 Handle VDDR pin in two different ways depending on the voltage range 2.7-3.6V or 3.3-5.5V. Refer to the

"Application Circuit".

[ ] *3 The operating time of the speaker amplifier may be limited depending on the average ambient temperature (Ta)

used.

■Pin Description

[ ] (SCL pin) When using an I

2C, be sure to insert a pull-up resistor between DV

DD pin.

[ ] (SCL pin) Accessing with clock synchronous serial interface at the same time is prohibited.

[ ] (SDA pin) When using an I

2C, be sure to insert a pull-up resistor between DV

DD pin.

[ ] (SDA pin) Accessing with clock synchronous serial interface at the same time is prohibited.

[ ] (CSB pin) Accessing with I

2C slave interface at the same time is prohibited.

[ ] (SCK pin) Accessing with I

2C slave interface at the same time is prohibited.

[ ] (SI pin) Accessing with I

2C slave interface at the same time is prohibited.

[ ] (SO pin) Accessing with I

2C slave interface at the same time is prohibited.

[ ] (IRON pin) Set this bit to "L" during playback operation using flash memory.

[ ] (IRON pin) Set this bit to "H" for onboard rewriting.

[ ] (IOVDD pin) Connect to DVDD pin even when not using serial flash memory interface.

[ ] (IOVDD pin) Connect a bypass capacitor between this pin and the DGND pin.

[ ] (VDDR pin) Connect a capacitor between this pin and DGND pin as close as possible.

[ ] (VDDR pin) Connect this pin to the DVDD pin when DVDD = 2.7 to 3.6V.

[ ] (XTB pin) When using a resonator, connect it as close as possible.

[ ] (XTB pin) Leave it open when not in use.

[ ] (XT pin) To use an external clock, input from this pin. Delete the capacitor when a crystal or ceramic resonator is

connected.

[ ] (XT pin) When using a resonator, connect it as close as possible.

[ ] (XT pin) Leave it open when not in use.

[ ] (DVDD pin) Connect a bypass capacitor between this pin and the DGND pin.

[ ] (VDDL pin) Connect a capacitor between this pin and DGND pin as close as possible.

[ ] (SG pin) Connect a capacitor between this pin and SPGND pin.

[ ] (SPVDD pin) Connect a bypass capacitor between this pin and the SPGND pin.

[ ] (SPOVDD pin) Set it at the same potential as the SPVDD.

[ ] (SPOGND pin) Set it at the same potential as the SPGND.

[ ] (RESETB pin) At power-on, input an "L" level to this pin. After the power supply voltage stabilizes, set this pin to an

"H" level.

[ ] (TEST0 pin) Fix to the DGND.

[ ] (CBUSYB pin) Be sure to input a command with this pin at an "H" level.

[ ] (N.C. pin) Unused pin. Leave open.

■Termination of Unused Pins

[ ] Confirm the recommended termination of unused pins in this chapter.

■Electrical characteristics

●Recommended operating conditions

[ ] *1 Be sure to SPVDD=SPOVDD>=DVDD.

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