BL600-Sx Hardware Integration Guide
Single Mode BLE Module
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25
CONN-HIG-BL600
5.2
Clocks and TIMERS
5.2.1
Clocks
The integrated high accuracy (+/-20ppm) 32.768kHz crystal oscillator provides protocol timing and helps with
Radio power consumption in the system Standby Doze /Deep sleep modes by reducing the time that the RX
window needs to be open. Standard accuracy clocks tend to have lower ac/-250 ppm.
The integrated high accuracy 16 MHz (+/-10ppm) crystal oscillator helps with Radio operation and also helps
reduce power consumption in the Active modes.
5.2.2
TIMERS
In keeping with the event driven paradigm of
smart
BASIC, the timer subsystem enables
smart
BASIC
applications to be written which allow future events to be generated based on timeouts.
Regular Timer: There are 8 built-in timers (regular timer) derived from a single RTC clock which are controlled
solely by
smart
BASIC functions. The resolution of the regular timer is 976 microseconds.
Tick Timer is a 31 bit free running counter that increments every 1 millisecond. The resolution of this counter
is 488 microseconds. This counter can be accessed using the functions GetTickCount() and GetTickSince().
Refer to the
smart
BASIC user manual.
5.3
Memory for
smart
BASIC Application Code
User has up to 4Kbytes of data memory available for
smart
BASIC application script.
5.4
RF
2402–2480MHz Bluetooth Low Energy radio (1Mbps over the air data rate).
TX output power of +4dBm programmable (via
smart
BASIC command) to -20dBm in steps of 4dB.
TX Whisper mode1 -30dBm (via
smart
BASIC command).
TX Whisper mode2 -55dBm (via
smart
BASIC command).
Receiver (with integrated channel filters) to achieve maximum sensitivity -91dBm @ 1Mbps BLE.
RF conducted interface available in 3-ways:
-
BL600-SA
-RF connected to on-board antenna on BL600-SA
-
BL600-SC
-RF connected to on-board IPEX MH4 RF connector on BL600-SC
-
BL600-ST
-RF connected to RF pad on BL600-ST.
Antenna options:
-
Integrated monopole chip antenna on BL600-SA
-
External dipole antenna connected with to IPEX MH4 RF connector on BL600-SC.
-
External dipole antenna connected to RSMA RF connector which then is connected with 50-Ohms
RF track on host PCB to RF pad on BL600-ST.
5.5
UART Interface
The Universal Asynchronous Receiver/Transmitter offers fast, full-duplex, asynchronous serial communication
with built-in flow control support (UART_CTS, UART_RTS) in HW up to 1 Mbps baud. Parity checking and
generation for the 9th data bit are supported.
UART_TX, UART_RX, UART_RTS, and UART_CTS form a conventional asynchronous serial data port with
handshaking. The interface is designed to operate correctly when connected to other UART devices such as
the 16550A. The signalling levels are nominal 0 V and 3.3 V (tracks VCC) and are inverted with respect to the
signalling on an RS232 cable.
