FEDL22620-01
ML22620
■
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 The operating time of the speaker amplifier may be limited depending on the average ambient temperature (Ta)
used.
■Pin Description
[ ] (TEST1 pin) Leave open.
[ ] (EROFF pin) Set this pin to "L" during playback operation using serial flash memory.
[ ] (EROFF pin) Set this bit to "H" for onboard rewriting.
[ ] (IOV
DD
pin) Connect a bypass capacitor between this pin and the DGND pin.
[ ] (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.
[ ] (DV
DD
pin) Connect a bypass capacitor between this pin and the DGND pin.
[ ] (V
DDL
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.
[ ] (SPV
DD
pin) Connect a bypass capacitor between this pin and the SPGND pin.
[ ] (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 SPV
DD
>=DV
DD
.
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Summary of Contents for LAPIS Semiconductor ML22620
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