EM357-RTR Ember, EM357-RTR Datasheet - Page 158

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

Specifications of EM357-RTR

• 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: 636-1011-2

TIMx_SMCR
TIM1_SMCR
Timer 1 Slave Mode Control Register
TIM2_SMCR
Timer 2 Slave Mode Control Register
Bitname
TIM_ETP
TIM_ECE
TIM_ETPS
TIM_MSM
TIM_ETP
31
23
15
7
0
0
TIM_ECE
30
22
14
0
0
6
Bitfield
[13:12]
[15]
[14]
TIM_TS
29
21
13
0
0
5
Access
RW
RW
RW
TIM_ETPS
Description
External Trigger Polarity.
This bit selects whether ETR or the inverse of ETR is used for trigger operations.
0: ETR is non-inverted, active at a high level or rising edge.
1: ETR is inverted, active at a low level or falling edge.
External Clock Enable.
This bit enables external clock mode 2.
0: External clock mode 2 disabled.
1: External clock mode 2 enabled. The counter is clocked by any active edge on the ETRF
signal.
Note 1: Setting the TIM_ECE bit has the same effect as selecting external clock mode 1
with TRGI connected to ETRF (TIM_SMS=111 and TIM_TS=111).
Note 2: It is possible to use this mode simultaneously with the following slave modes:
reset mode, gated mode and trigger mode. TRGI must not be connected to ETRF in this
case (the TIM_TS bits must not be 111).
Note 3: If external clock mode 1 and external clock mode 2 are enabled at the same
time, the external clock input will be ETRF.
External Trigger Prescaler.
External trigger signal ETRP frequency must be at most 1/4 of CK frequency. A prescaler
can be enabled to reduce ETRP frequency. It is useful with fast external clocks.
00: ETRP prescaler off.
01: Divide ETRP frequency by 2.
10: Divide ETRP frequency by 4.
11: Divide ETRP frequency by 8.
28
20
12
4
0
0
Final
9-34
27
19
11
0
0
3
0
26
18
10
2
0
0
Address: 0x4000F008 Reset: 0x0
Address: 0x4000E008 Reset: 0x0
TIM_ETF
TIM_SMS
25
17
0
0
9
1
120-035X-000G
24
16
0
0
8
0