User's Manual

BL652
Datasheet
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Table 19: ADC power consumption
Parameter
Min
Typ
Max
Unit
ADC current during conversion
-
700
-
uA
The above current consumption is for the given peripheral only and to operate that peripheral requires some
other internal blocks which consume base current. This base current is consumed when the UART, SPI, I2C, or
ADC is opened (operated).
For asynchronous interface like the UART (asynchronous as the other end can communicate at any time), the
UART on the BL652 must be kept open (by a command in smartBASIC application script), resulting in the base
current consumption penalty.
For a synchronous interface like the I2C or SPI (since BL652 side is the master), the interface can be closed and
opened (by a command in smartBASIC application script) only when needed, resulting in current saving (no base
current consumption penalty). There’s a similar argument for ADC (open ADC when needed).
5 FUNCTIONAL DESCRIPTION
The BL652 BLE (Bluetooth Low Energy) module is a self-contained product and requires only power and a user’s
smartBASIC application to implement full BLE functionality. The integrated, high performance antenna combined
with the RF and base-band circuitry provides the BLE wireless link, and any of the SIO lines provide the OEM’s
chosen interface connection to the sensors. The user’s smartBASIC application binds the sensors to the BLE
wireless functionality.
The variety of hardware interfaces and the smartBASIC programming language allow the BL652 module to serve
a wide range of wireless applications while reducing overall time to market and the learning curve for developing
BLE products.
To provide the widest scope for integration, a variety of physical host interfaces/sensors are provided. The major
BL652 series module functional blocks described below.
Power Management (includes Brown-out and Power on Reset)
Power management features:
 System Standby Doze and Deep Sleep modes
 Open/Close Peripherals (UART, SPI, I2C, SIO’s, ADC, NFC). Peripherals consume current when open; each
peripheral can be individually closed to save power consumption (with a command in a smartBASIC
application script)
 Use of the internal DCDC convertor or LDO is decided by the underlying BLE stack
 smartBASIC command allows the VCC voltage to be read (through the internal ADC)
 Pin wake-up system from deep sleep (including from NFC pins)
Power supply features:
 Supervisor hardware to manage power during reset, brownout, or power fail.
 1.8V to 3.6V supply range using internal DCDC convertor or LDO decided by the underlying BLE stack.