ALPHA-RX433S RF Solutions, ALPHA-RX433S Datasheet - Page 13

• Manufacturer Part Number: ALPHA-RX433S
• Description: RECEIVER RF ALPHA 5.4V 433MHZ
• Manufacturer: RF Solutions

Specifications of ALPHA-RX433S

• Frequency: 433MHz
• Sensitivity: -100dBm
• Data Rate - Maximum: 115.2kbps
• Modulation Or Protocol: FM, FSK
• Current - Receiving: 11mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 5.4 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Applications: -
• Memory Size: -

DSALPHA-4
Receiver Programming Guide
4． ． ． ． Brief description
The ALPHA Receiver is a low cost FSK Receiver with all RF functions integrated. It needs only an MCU,
crystal, decoupling capacitor and antenna to build a high reliability FSK transmitter. The operation
frequency can cover 300 to 1000MHz. Although each module can cover all frequencies, better
performance is obtained by using the module at the preset frequency
The module supports a command interface to setup frequency, deviation, output power and also data
rate.
5． ． ． ． Commands
CONTROL INTERFACE
Commands to the transmitters are sent serially. Data bits on pin SDI are shifted into the device upon the
rising edge of the clock on pin SCK whenever the chip select pin nSEL is low. When the nSEL signal is
high, it initializes the serial interface. The number of bits sent is an integer multiple of 8. All commands
consist of a command code, followed by a varying number of parameter or data bits. All data are sent
MSB first (e.g. bit 15 for a 16-bit command). Bits having no influence (don’t care) are indicated with X. The
Power On Reset (POR) circuit sets default values in all control and command registers.
The status information or received data can be read serially over the IRQ pin. Bits are shifted out upon the
falling edge of CLK signal
Timing Specification
Symbol
t
t
t
t
t
t
t
t
t
CH
CL
SS
SH
SHI
DS
DH
OD
BL
Jul 09
Parameter
Clock high time
Clock low time
Select setup time (nSEL falling edge to SCK rising edge)
Select hold time (SCK falling edge to nSEL rising edge)
Select high time
Data setup time (SDI transition to SCK rising edge)
Data hold time (SCK rising edge to SDI transition)
Data delay time
Push-button input low time
ALPHA RF M
© 2009 RF Solutions Ltd.
ODULES
Page 13
Minimum value [ns]
25
25
10
10
25
5
5
10
25
ALPHA-RX
ALPHA-TX