BCM43455 Preliminary Data Sheet
Sequencing of Reset and Regulator Control Signals
Figure 46: WLAN = ON, Bluetooth = OFF
32.678 kHz
Sleep Clock
90% of VH
VBAT*
VDDIO
~ 2 Sleep cycles
WL_REG_ON
BT_REG_ON
*Notes:
1. VBAT should not rise 10%–90% faster than 40 microseconds.
2. VBAT should be up before or at the same time as VDDIO. VDDIO should NOT be present first or be held high before
VBAT is high.
Figure 47: WLAN = OFF, Bluetooth = ON
32.678 kHz
Sleep Clock
90% of VH
VBAT*
VDDIO
~ 2 Sleep cycles
WL_REG_ON
BT_REG_ON
*Notes:
1. VBAT should not rise 10%–90% faster than 40 microseconds.
2. VBAT should be up before or at the same time as VDDIO. VDDIO should NOT be present first or be held high before
VBAT is high.
Broadcom®
November 5, 2015 • 43455-DS109-R
Page 153
BROADCOM CONFIDENTIAL
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