EM357-RTB Ember, EM357-RTB Datasheet - Page 129

• Manufacturer Part Number: EM357-RTB
• Description: IC RF TXRX ZIGBEE 192KB 48QFN
• Manufacturer: Ember

Specifications of EM357-RTB

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4 Zigbee
• Applications: General Purpose
• Power - Output: 5dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 26mA
• Current - Transmitting: 31mA
• Data Interface: PCB, Surface Mount
• Memory Size: 192kB Flash, 12kB RAM
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q5059680

but without setting the INT_TIMUIF flag. Thus no interrupt request is sent. This avoids generating both update
and capture interrupts when clearing the counter on the capture event.
When a UEV occurs, the update flag (the INT_TIMUIF bit in the INT_TIMxFLAG register) is set (unless TIM_USR
is 1) and the following registers are updated:
Figure 9-3, Figure 9-4, Figure 9-5, and Figure 9-6 show some examples of the counter behavior for different
clock frequencies when TIMx_ARR = 0x36.
The buffer of the prescaler is reloaded with the buffer value (contents of the TIMx_PSC register).
The auto-reload shadow register is updated with the buffer value (TIMx_ARR).
Figure 9-3. Counter Timing Diagram, Internal Clock Divided by 1
Figure 9-4. Counter Timing Diagram, Internal Clock Divided by 4
Final
9-5
120-035X-000G