EM351-MOD-RF-TG Ember, EM351-MOD-RF-TG Datasheet - Page 130
EM351-MOD-RF-TG
Manufacturer Part Number
EM351-MOD-RF-TG
Description
MODULE EM351 NO PA/LNA W/RF CONN
Manufacturer
Ember
Specifications of EM351-MOD-RF-TG
Frequency
2.4GHz
Data Rate - Maximum
250kbps
Modulation Or Protocol
802.15.4 Zigbee
Power - Output
3dBm
Sensitivity
-100dBm
Voltage - Supply
2.1 V ~ 3.6 V
Current - Receiving
26mA
Current - Transmitting
31mA
Data Interface
PCB, Surface Mount
Memory Size
128kB Flash, 12kB RAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Applications
-
Other names
636-1015
- Current page: 130 of 245
- Download datasheet (12Mb)
EM351 / EM357
Figure 9-5. Counter Timing Diagram, Update Event when TIM_ARBE = 0 (TIMx_ARR not buffered)
Figure 9-6. Counter Timing Diagram, Update Event when TIM_ARBE = 1 (TIMx_ARR buffered)
Down-Counting Mode
9.3.2.2
In down-counting mode, the counter counts from the auto-reload value (contents of the TIMx_ARR register)
down to 0, then restarts from the auto-reload value and generates a counter underflow event.
A UEV can be generated at each counter underflow, by setting the TIM_UG bit in the TIMx_EGR register, or by
using the slave mode controller. Software can disable the UEV by setting the TIM_UDIS bit in the TIMx_CR1
register, to avoid updating the shadow registers while writing new values in the buffer registers. No UEV
occurs until the TIM_UDIS bit is written to 0. However, the counter restarts from the current auto-reload
value, whereas the prescaler’s counter restarts from 0, but the prescale rate doesn’t change.
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 interrupts when clearing the counter on the capture event.
9-6
120-035X-000G
Final
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