EM351-MOD-RF-TG Ember, EM351-MOD-RF-TG Datasheet - Page 125
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
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- Download datasheet (12Mb)
9 General Purpose Timers (TIM1 and TIM2)
9.1 Introduction
Each of the EM35x’s two general-purpose timers consists of a 16-bit auto-reload counter driven by a
programmable prescaler. They may be used for a variety of purposes, including measuring the pulse lengths of
input signals (input capture) or generating output waveforms (output compare and PWM). Pulse lengths and
waveform periods can be modulated from a few microseconds to several milliseconds using the timer
prescaler. The timers are completely independent, and do not share any resources. They can be synchronized
together as described in the Timer Synchronization section.
The two general-purpose timers, TIM1 and TIM2, have the following features:
Figure 9-1 shows an overview of a timer’s internal structure.
Note: Because the two timers are identical, the notation TIMx refers to either TIM1 or TIM2. For example,
TIMx_PSC refers to both TIM1_PSC and TIM2_PSC. Similarly, “y” refers to any of the four channels of a given
timer, so for example, OCy refers to OC1, OC2, OC3, and OC4.
16-bit up, down, or up/down auto-reload counter.
Programmable prescaler to divide the counter clock by any power of two from 1 through 32768.
4 independent channels for:
Synchronization circuit to control the timer with external signals and to interconnect the timers.
Flexible clock source selection:
Interrupt generation on the following events:
Supports incremental (quadrature) encoders and Hall sensors for positioning applications.
Trigger input for external clock or cycle-by-cycle current management.
•
•
•
•
•
•
•
•
•
•
•
•
Input capture
Output compare
PWM generation (edge- and center-aligned mode)
One-pulse mode output
Peripheral clock (PCLK at 6 or 12 MHz)
32.768 kHz external clock (if available)
1 kHz clock
GPIO input
Update: counter overflow/underflow, counter initialization (software or internal/external trigger)
Trigger event (counter start, stop, initialization or count by internal/external trigger)
Input capture
Output compare
Final
9-1
120-035X-000G
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