ALPHA-RX433S RF Solutions, ALPHA-RX433S Datasheet - Page 7

• 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
Transmitter Programming Guide
1． ． ． ． Brief description
The ALPHA Transmitter is a low cost FSK transmitter. 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.
The module supports a command interface to setup frequency, deviation, output power and also data
rate.
2． ． ． ． 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
Control Command
Symbol
t
t
t
t
t
t
t
t
t
CH
CL
SS
SH
SHI
DS
DH
OD
BL
10
11
12
Jul 09
1
2
3
4
5
6
7
8
9
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
Related Parameters/Functions
Configuration Setting Command
Power Management Command
Frequency Setting Command
Data Rate Command
Power Setting Command
Low Battery Detector Command
Sleep Command
Push-Button Command
Wake-Up Timer Command
Data Transmit Command
Status Register Command
PLL Setting and Reset Mode
Command
ALPHA RF M
©2009 RF Solutions Ltd.
Frequency band,
microcontroller clock output,
crystal load capacitance,
frequency deviation
Crystal oscillator, synthesizer,
power amplifier, low battery
detector, wake-up timer, clock
output buffer
Carrier frequency
Bit rate
Nominal output power, OOK
mode
Low battery threshold limit,
transmit bit synchronizer,
wake-up timer calibration
Length of the clock tail after
power down
Push-button related functions
Wake-up time period
PLL bandwidth, reset mode
ODULES
Related control bits
b1 to b0, d2 to d0, x3 to x0, ms, m2 to
m0
a1 a0, ex, es, ea, eb, et, dc
f11 to f0
r7 to r0
ook, p2 to p0
dwc, ebs, t4 to t0
s7 to s0
p4, d1 to d0, b4 to b1, bc
r4 to r0, m7 to m0
Data transmission
Transmitter status read
bw1 to bw0, dr
Minimum value [ns]
25
25
10
10
25
5
5
10
25
Page 7
ALPHA-RX
ALPHA-TX