SI1012-A-GM Silicon Laboratories Inc, SI1012-A-GM Datasheet - Page 290
SI1012-A-GM
Manufacturer Part Number
SI1012-A-GM
Description
IC TXRX MCU + EZRADIOPRO
Manufacturer
Silicon Laboratories Inc
Specifications of SI1012-A-GM
Package / Case
42-QFN
Frequency
240MHz ~ 960MHz
Data Rate - Maximum
256kbps
Modulation Or Protocol
FSK, GFSK, OOK
Applications
General Purpose
Power - Output
13dBm
Sensitivity
-121dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
18.5mA
Current - Transmitting
30mA
Data Interface
PCB, Surface Mount
Memory Size
16kB Flash, 768B RAM
Antenna Connector
PCB, Surface Mount
Number Of Receivers
1
Number Of Transmitters
1
Wireless Frequency
240 MHz to 960 MHz
Interface Type
UART, SMBus, SPI, PCA
Output Power
13 dBm
Operating Supply Voltage
0.9 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Maximum Supply Current
4 mA
Minimum Operating Temperature
- 40 C
Modulation
FSK, GFSK, OOK
Protocol Supported
C2, SMBus
Core
8051
Program Memory Type
Flash
Program Memory Size
16 KB
Data Ram Size
768 B
Supply Current (max)
4 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1871-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI1012-A-GMR
Manufacturer:
ROHM
Quantity:
12 000
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Add R/W
Si1010/1/2/3/4/5
an incorrect error may rarely occur. The RSSI value may be incorrect if read during the update period. The
update period is approximately 10 ns every 4 Tb. For 10 kbps, this would result in a 1 in 40,000 probability
that the RSSI may be read incorrectly. This probability is extremely low, but to avoid this, one of the follow-
ing options is recommended: majority polling, reading the RSSI value within 1 Tb of the RSSI interrupt, or
using the RSSI threshold described in the next paragraph for Clear Channel Assessment (CCA).
For CCA, threshold is programmed into rssith[7:0] in "Register 27h. RSSI Threshold for Clear Channel
Indicator." After the RSSI is evaluated in the preamble, a decision is made if the signal strength on this
channel is above or below the threshold. If the signal strength is above the programmed threshold then the
RSSI status bit, irssi, in "Register 04h. Interrupt/Status 2" will be set to 1. The RSSI status can also be
routed to a GPIO line by configuring the GPIO configuration register to GPIOx[3:0] = 1110.
23.9. Reference Design
Reference designs are available at
mended schematics, BOM, and layout. TX matching component values for the different frequency bands
can be found in the application notes “AN435: Si4032/4432 PA Matching” and “AN436:
Si4030/4031/4430/4431 PA Matching.” RX matching component values for different frequency bands can
be found in “AN427: EZRadioPRO Si433x and Si443x RX LNA Matching.”
290
26
27
R/W
R
250
200
150
100
50
0
-120
RSSI Threshold for Clear Channel Indicator
Received Signal Strength Indicator
Function/Description
-100
Figure 23.25. RSSI Value vs. Input Power
-80
www.silabs.com
RSSI vs Input Power
rssith[7]
rssi[7]
D7
-60
Rev. 1.0
In Pow [dBm]
rssith[6]
rssi[6]
D6
for many common applications which include recom-
rssith[5]
rssi[5]
D5
-40
rssith[4]
rssi[4]
D4
rssith[3]
-20
rssi[3]
D3
rssith[2]
rssi[2]
D2
0
rssith[1]
rssi[1]
D1
rssith[0]
rssi[0]
D0
20
POR
Def.
00h
—
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