EM35X-DEV Ember, EM35X-DEV Datasheet - Page 132

• Manufacturer Part Number: EM35X-DEV
• Description: KIT DEV EM35X ZIGBEE
• Manufacturer: Ember
• Series: EM35xr
• Type: Transceiver, 802.15.4r

Specifications of EM35X-DEV

• Frequency: 2.4GHz
• For Use With/related Products: EM351, EM357
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 636-1012

In addition, if the TIM_URS bit in the TIMx_CR1 register is set, setting the TIM_UG bit generates a UEV, but
without setting the INT_TIMUIF flag. Thus no interrupt request is sent. This avoids generating both update and
capture interrupt 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 9-9, Figure 9-10, and Figure 9-11 show some examples of the counter behavior for different clock
frequencies.
The prescaler shadow register is reloaded with the buffer value (contents of the TIMx_PSC register).
The auto-reload active register is updated with the buffer value (contents of the TIMx_ARR register). If the
update source is a counter overflow, the auto-reload is updated before the counter is reloaded, so that the
next period is the expected one. The counter is loaded with the new value.
Figure 9-10. Counter Timing Diagram, Update Event with TIM_ARBE = 1 (counter underflow)
Figure 9-9. Counter Timing Diagram, Internal Clock Divided by 1, TIMx_ARR = 0x6
Final
9-8
120-035X-000G