BCM88335L2CUBGT Datasheet, PDF (31/140 Pages) Cypress Semiconductor – Single-Chip 5G Wi-Fi IEEE 802.11ac MAC/Baseband/ Radio with Integrated Bluetooth 4.1 for Automotive Applications

BCM88335 Data Sheet
External 32.768 kHz Low-Power Oscillator
External 32.768 kHz Low-Power Oscillator
The BCM88335 uses a secondary low-frequency clock for low-power-mode timing. An external 32.768 kHz
precision oscillator is required.
Use a precision external 32.768 kHz clock that meets the requirements listed in Table 3.
Table 3: External 32.768 kHz Sleep Clock Specifications
Parameter
Nominal input frequency
Frequency accuracy
Duty cycle
Input signal amplitude
Signal type
Input impedance^a
Clock jitter (during initial start-up)
a. When power is applied or switched off.
LPO Clock
32.768
±200
30–70
200–1800
Square-wave or sine-wave
>100k
<5
<10,000
Units
kHz
ppm
%
mV, p-p
–
Ω
pF
ppm
Broadcom^®
September 23, 2015 • 88335-DS100-R
BROADCOM CONFIDENTIAL
Page 30