CYW20734 Datasheet, PDF (6/51 Pages) Cypress Semiconductor – Single-Chip Bluetooth Transceiver for Wireless Input Devices

CYW20734
1.2.1 NVRAM Configuration Data and Storage
NVRAM contains configuration information about the customer application, including the following:
■ Fractional-N information
■ BD_ADDR
■ UART baud rate
■ SDP service record
■ File system information used for code, code patches, or data. The CYW20734 can use SPI Flash or I²C EEPROMs for NVRAM
storage.
1.2.2 External Reset
An external active-low reset signal, RESET_N, can be used to put the CYW20734 in the reset state. An external voltage detector
reset IC with 50 ms delay is needed on the RESET_N. The RESET_N should be released only after the VDDO supply voltage level
has been stabilized for 50 ms.
Figure 2. Reset Timing
Reset
(External)
VDDIO
VDDIO POR
VDDC
VDDC Reset (Internal)
XTAL_RESET
XTAL_BUF_PU
50 ms
~2.4 ms
0.5 ms
~2.4 ms
10 LPO cycles
8 LPO cycles
1.3 Integrated Radio Transceiver
The CYW20734 has an integrated radio transceiver that has been optimized for use in 2.4 GHz Bluetooth wireless systems. It has
been designed to provide low-power, low-cost, robust communications for applications operating in the globally available 2.4 GHz
unlicensed ISM band. The CYW20734 is fully compliant with the Bluetooth Radio Specification and enhanced data rate (EDR)
specification and meets or exceeds the requirements to provide the highest communication link quality of service.
Document Number: 002-14874 Rev. *S
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