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UG-1163
On-Board 32 Mb Serial Flash Memory
The ADZS-U4050LF-EZKIT board has an on-board, serial flash
memory that can be used to store voice, text, and data.
The serial flash memory (U7) is a W25Q32 chip that has a storage
size of 32 Mb. This chip supports a standard serial peripheral
interface (SPI) with speeds up to 104 MHz. The chip is interfaced
with the SPI2 of the microcontroller and can be disconnected to
the board by unshorting the JP4 header.
Figure 8 shows the circuit with the W25Q32 chip in the middle
and the JP4 header below the flash chip.
On-Board Buzzer
The ADZS-U4050LF-EZKIT has a buzzer (D1) that
generates tones and alarms with the beeper controller inside
the
ADuCM4050
chip next to the PV cell connector.
Figure 8. External 32 Mb Serial Flash Memory
Figure 9. Buzzer Circuit
Rev. 0 | Page 10 of 31
ADZS-U4050LF-EZKIT
microcontroller. Figure 9 shows the buzzer
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