Siliconians, Inc.
4701 Patrick Henry Drive, Suite 501, Santa Clara, CA 95054
Tel: 408-748-8600 Fax: 408-748-8687
www.siliconians.com or info@siliconians.com
Rev 01/14/98
SS1102L
Integrated MCU with Spread Spectrum Transceiver
Introduction
Siliconians' SS1102L is a low-cost single-chip solution for a variety of wireless digital data appli-
cations using spread spectrum and operating as FCC Part 15-compliant devices in the ISM bands.
Integrating a powerful 8-bit microcontroller, the SS1102L provides very high level of integration,
low power consumption and low cost equally suitable for many embedded applications such as in-
dustrial, AMR, telemetry, computer, and consumer.
General Information
The SS1102L can be interfaced directly with a variety of data sources or devices through its mul-
tiple ports. The data is sent or received by the integrated spread spectrum modem via a simple in-
terface with an external RF module.
Together with the baseband spread spectrum modem, the chip also includes an internal 8-bit mi-
crocontroller with ROM, RAM and all necessary peripheral functions. The CPU uses the industry-
standard 80C51 instruction set.
The spread spectrum baseband modem can provide a full-duplex data link using a Time-Division-
Duplex (TDD) protocol. It can also be used in a half-duplex mode with the user having total control
of the protocol and framing structure. The SS1102L can achieve a sustained bit rate up to 160 Kbps
in half-duplex mode, sufficient for a variety of point-to-point or multipoint applications.
The SS1102L provides constant monitoring of the link quality with an indication of the relative
Signal/Noise (S/N) at the baseband level and also a low-speed full-duplex signaling channel, inde-
pendent of the main data channel, for communication and control between the two sides of a full-
duplex link.
The SS1102L is a 3V CMOS device and contains a variety of power-saving features, including two
on-chip oscillators providing for different operation modes (active, low power, power down) and
very low battery drain in standby, for extremely long battery operation. It is packaged within a
small 52-pin surface-mounted package.
SS1102L
V1.3
2
SS1102L Main features
System Controller Functions:
80C51 Compatible 8-bit CPU
On-Chip 16 Kbytes ROM and 512 bytes RAM
Programmable Serial Peripheral Interface (SPI)
Multiple Timers: two Capture, Watch Dog, Time Base
External Interrupt lines
Power-on Reset
Programmable I/O lines
Active, Low Power and Power Down operating modes
Spread Spectrum Baseband Modem Functions:
Direct Sequence Spread Spectrum
Quaternary Baseband Modulation
Processing Gain: 12 dB
Data scrambler for spectral whitening and added security
Internal dual-FIFO (30-byte deep)
Embedded Time-Division-Duplex (TDD) controller
MSK on-the-air Modulation
Four Programmable 32-bit PN Sequences
Programmable Security code
Independent low-speed signaling channel
Signal Quality Indicator Output (S/N)
Chip Implementation:
Two on-chip oscillator circuits - Master clock up to 32 Mhz and low-speed 32 Khz clock for the Low-
Power Mode
Power saving features in active mode
Low-Battery Detect
Rail-to-rail comparator for analog data input
Power supply: 2.7V to 5.5V
CMOS - 52-pin PQFP
Availability: 1Q98
Tools:
Technology Evaluation: use EB101 board, available now
Development Tools: POD for emulator (Nohau) available 1Q98
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