SI1000-C-GM Silicon Laboratories Inc, SI1000-C-GM Datasheet - Page 98

• Manufacturer Part Number: SI1000-C-GM
• Description: IC TXRX MCU + EZRADIOPRO
• Manufacturer: Silicon Laboratories Inc

Specifications of SI1000-C-GM

• Package / Case: 42-QFN
• Frequency: 240MHz ~ 960MHz
• Data Rate - Maximum: 256kbps
• Modulation Or Protocol: FSK, GFSK, OOK
• Applications: General Purpose
• Power - Output: 20dBm
• Sensitivity: -121dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Current - Receiving: 18.5mA
• Current - Transmitting: 85mA
• Data Interface: PCB, Surface Mount
• Memory Size: 64kB Flash, 4kB 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: 20 dBm
• Operating Supply Voltage: 0.9 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 4.1 mA
• Minimum Operating Temperature: - 40 C
• Modulation: FSK, GFSK, OOK
• Protocol Supported: C2, SMBus
• Core: 8051
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 4352 B
• Supply Current (max): 4.1 mA
• Cpu Family: Si100x
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 25MHz
• Total Internal Ram Size: 4.25KB
• # I/os (max): 22
• Number Of Timers - General Purpose: 4
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 1.8V
• On-chip Adc: 18-chx10-bit
• Instruction Set Architecture: CISC
• Mounting: Surface Mount
• Pin Count: 42
• Package Type: QFN EP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1881-5

Si1000/1/2/3/4/5
6. Programmable Current Reference (IREF0)
Si1000/1/2/3/4/5 devices include an on-chip programmable current reference (source or sink) with two out-
put current settings: Low Power Mode and High Current Mode. The maximum current output in Low Power
Mode is 63 µA (1 µA steps) and the maximum current output in High Current Mode is 504 µA (8 µA steps).
The current source/sink is controlled though the IREF0CN special function register. It is enabled by setting
the desired output current to a non-zero value. It is disabled by writing 0x00 to IREF0CN. The port I/O pin
associated with ISRC0 should be configured as an analog input and skipped in the Crossbar. See Section
“21. Port Input/Output” on page 207 for more details.
SFR Definition 6.1. IREF0CN: Current Reference Control
SFR Page = 0x0; SFR Address = 0xB9
6.1. IREF0 Specifications
See Table 4.12 on page 62 for a detailed listing of IREF0 specifications.
98
Name
Reset
Type
Bit
5:0
7
6
Bit
IREF0DAT[5:0] IREF0 Data Word.
MDSEL
SINK
R/W
Name
SINK
7
0
MODE
R/W
IREF0 Current Sink Enable.
Selects if IREF0 is a current source or a current sink.
0: IREF0 is a current source.
1: IREF0 is a current sink.
IREF0 Output Mode Select.
Selects Low Power or High Current Mode.
0: Low Power Mode is selected (step size = 1 µA).
1: High Current Mode is selected (step size = 8 µA).
Specifies the number of steps required to achieve the desired output current.
Output current = direction x step size x IREF0DAT.
IREF0 is in a low power state when IREF0DAT is set to 0x00.
6
0
5
0
Rev. 1.0
4
0
Function
3
0
IREF0DAT
R/W
2
0
1
0
0
0