STLBC01 datasheet(18/40 Pages) STMICROELECTRONICS

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Functional description

STLBC01

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DocID022984 Rev 2

Figure 6. STBLC01 state diagram

5.3.2

Idle mode

Idle is the mode that the STBLC01 enters as default after a reset. When this mode is

entered, the HCI event STBLC_POWER_MODE_IDLE is reported to the host. The power

mode for this configuration is Standby, as defined in

Section 5.2.1. The HCI system is

available and the host can communicate with the controller using the selected transport

layer. The HCI is able to receive and decode any command sent by the host as well as send

any event back to the host using either UART or SPI transport layers, according to the value

of the SEL pin. Xtal is the clock source of STBLC01 logic. RF core is off in this state. The

internal logic is in Halt mode, waiting for a HCI command from the host.

5.3.3

Sleep mode

Sleep mode is an STBLC01 low power mode. The power mode for this configuration is

Xtreme, as defined in

Section 5.2.2. RF cannot be activated from this state. When this mode

Sleep

BLE

Active

OFF

BLE

Sleep

(RC)

Idle

HCI over SPI

BLE firmware

BLE

Sleep

(crystal)

AM10257V2

STLBC01 Datasheet(PDF) 18 Page - STMicroelectronics