SI1014-A-GM Silicon Laboratories Inc, SI1014-A-GM Datasheet - Page 284

• Manufacturer Part Number: SI1014-A-GM
• Description: IC TXRX MCU + EZRADIOPRO
• Manufacturer: Silicon Laboratories Inc

Specifications of SI1014-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: 0.9 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: 336-1869-5

Si1010/1/2/3/4/5
23.8.5. Low Battery Detector
A low battery detector (LBD) with digital read-out is integrated into the chip. A digital threshold may be pro-
grammed into the lbdt[4:0] field in "Register 1Ah. Low Battery Detector Threshold". When the digitized bat-
tery voltage reaches this threshold an interrupt will be generated on the nIRQ pin to the microcontroller.
The microcontroller can confirm source of the interrupt by reading "Register 03h. Interrupt/Status 1" and
“Register 04h. Interrupt/Status 2.”
If the LBD is enabled while the chip is in SLEEP mode, it will automatically enable the RC oscillator which
will periodically turn on the LBD circuit to measure the battery voltage. The battery voltage may also be
read out through "Register 1Bh. Battery Voltage Level" at any time when the LBD is enabled. The low bat-
tery detect function is enabled by setting enlbd=1 in "Register 07h. Operating Mode and Function Control
1".
The LBD output is digitized by a 5-bit ADC. When the LBD function is enabled (enlbd = 1 in "Register 07h.
Operating Mode and Function Control 1") the battery voltage may be read at anytime by reading "Register
1Bh. Battery Voltage Level." A battery voltage threshold may be programmed in “Register 1Ah. Low Bat-
tery Detector Threshold". When the battery voltage level drops below the battery voltage threshold an
interrupt will be generated on nIRQ pin to the microcontroller if the LBD interrupt is enabled in “Register
284
Add R/W Function/Description
1A
1B
R/W
R
300
250
200
150
100
50
0
Battery Voltage Level
-40
Low Battery Detector
Threshold
-20
Temperature Measurement with ADC8
Figure 23.22. Temperature Ranges using ADC8
0
Temperature [Celsius]
D7
0
20
D6
0
40
Rev. 1.0
D5
0
60
vbat[4] vbat[3] vbat[2] vbat[1] vbat[0]
lbdt[4]
D4
80
lbdt[3]
D3
100
lbdt[2]
D2
Sensor Range 0
Sensor Range 1
Sensor Range 2
Sensor Range 3
lbdt[1]
D1
lbdt[0]
D0
POR
Def.
14h
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