User's Manual

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• 1V2 with the startup time t 1V2
• One of the following clock sources
• RC16 with the startup time t START,RC16
• XO16M/XO32M with the startup time the clock management system t XO
Constant Latency
In Constant Latency mode the system is optimized towards keeping the CPU latency and the PPI
task response constant and at a minimum. This is secured by forcing a set of base resources on
while in sleep mode. The cost is that the system will have higher power consumption.
The following resources are kept active while in sleep mode:
• 1V7 regulator with the standby current of I 1V7
• 1V2 regulator. Here the current consumption is specified in combination with the clock
source
• One of the following clock sources:
• RC16 with the standby current of I 1V2RC16
• XO16M with the standby current of I 1V2XO16
• XO32M with the standby current of I 1V2XO32
4. RF Specifications
The BLE module is used nRF51 series 2.4 GHz RF transceiver is designed and optimized to operate
in the worldwide ISM frequency band at 2.400 to 2.4835 GHz. Radio modulation modes and
configurable packet structure enable interoperability with BluetoothR low energy (BLE), ANT™,
Enhanced ShockBurst™, and other 2.4 GHz protocol implementations.
The transceiver receives and transmits data directly to and from system memory for flexible and
efficient packet data management.
The nRF51 series transceiver has the following features:
• General modulation features
• GFSK modulation
• Data whitening
• On-air data rates
• 250 kbps
• 1 Mbps
• 2 Mbps
• Transmitter with programmable output power of +4 dBm to -20 dBm, in 4 dB steps
• Transmitter whisper mode -30 dBm
• RSSI function (1 dB resolution)
• Receiver with integrated channel filters achieving maximum sensitivity
• -96 dBm at 250 kbps
• -93 dBm at 1 Mbps BLE
• -90 dBm at 1 Mbps
• -85 dBm at 2 Mbps
• RF Synthesizer
• 1 MHz frequency programming resolution