STL POM0001 Users Manual

STL 2.4G transceiver module

Technical Manual

General

-----------

The modules is a low power radio frequency module operating within the ISM 2.4 GHz frequency

band. The radio transceiver is compatible with IEEE.802.15.4 standard with hardware acceleration for

both the IEEE 802.15.4 MAC and AES security.. It also incoproates a 32-bit ARM7 core based MCU, 128

Kbyte FLASH memory and 96 Kbyte RAM. It is intended for use as a short range radio module
for embedded applications.

Features Summary

- IEEE 802.15.4 standard compliant on-chip transceiver/modem

- 2.4 GHz ISM Band operation

- Programmable transmitter output power (-30 dBm to +4 dBm typical)

- World-class receiver sensitivity

-96 dBm typical receiver sensitivity using DCD mode (<1% PER, 20-byte packets)

-100 dBm typical receiver sensitivity using NCD mode (<1% PER, 20-byte packets)
Hardware acceleration for IEEE 802.15.4 applications
MAC accelerator (sequencer and DMA interface)
Advanced encryption/decryption hardware engine (AES 128-bit)
Supports standard IEEE 802.15.4 signaling with 250 kbps data rate
32-bit ARM7TDMI-S CPU core with programmable performance up to 26 MHz (24 MHz typical)
Extensive on-board memory resources
— 128 Kbyte serial FLASH memory (will be mirrored into RAM)
— 96 Kbyte SRAM
— 80 Kbyte ROM
built in voltage regulator
UART and SPI interface for control and data interface
GPIOs for general control
RF Shield can to reduce interference

3.3V DC supply

CONFIDENTIAL

Block Diagram

Fig. 1 Block Diagram

RF Operation

The RF radio interface provides for low cost and the high density as shown in Figure 2. The
transceiver is a zero IF radio without intermediate frequency (IF)stage. An onboard balun along
with a TX/RX switch allows direct connection to a single-ended 50-Ω antenna. The integrated PA
provides programmable output power typically from -30 dBm to +4 dBm, and the RX LNA
provides -96 dBm sensitivity. In addition, separate complementary PA outputs allow use of an
external PA and/or an external LNA for extended range applications. The device also has onboard
bypass capacitors and crystal load capacitors for the smallest footprint in the industry. All
components are integrated into the package except the crystal and antenna.

Figure 2. MC13224V RF Radio Interface

Refer to Freescale MC13224V datasheet for details.

Pin Assignements

J1

Pin No. Name Direction

1 UART1_RTS input

2 UART1_CTS output

3 UART1_RX input

4 UART1_TX output

5 KPI_3 input/output

6 KPI_4 input/output

7 KPI_5 input/output

J2

1 VCC power

2 GND ground

3 SPI_SS input

4 SPI_MISO output

5 SPI_MOSI input

6 SPI_CLK output

Fig. 3 Connectors and Pin Assignments

J2

J1

Pin1

Pin 1