> 2 | Product Concept

> 2.1 | Key Features at a Glance

> Feature | Implementation
> General
> Frequency bands | Quad band: GSM 850/900/1800/1900MHz
> GSM class | Small MS
> Output power (according to Release 99, V5) | Class 4 (+33dBm ±2dB) for EGSM850 Class 4 (+33dBm ±2dB) for EGSM900 Class 1 (+30dBm ±2dB) for GSM1800 Class 1 (+30dBm ±2dB) for GSM1900 The values stated above are maximum limits. According to Release 99, the maximum output power in a multislot configuration may be lower. The nominal reduction of maximum output power varies with the number of uplink timeslots used and amounts to 3.0dB for 2Tx, 4.8dB for 3Tx and 6.0dB for 4Tx.
> Power supply | 3.2V to 4.5V
> Ambient operating temperature according to IEC 60068-2 | Normal operation: -30°C to +65°C Restricted operation: +65°C to +75°C
> Physical | Dimensions: 33.9mm x 55mm x max. 4mm Weight: approx. 7.5g
> RoHS | All hardware components fully compliant with EU RoHS Directive
> GSM / GPRS / EGPRS features
> Data transfer | GPRS:
> • | Multislot Class 12
> • | Full PBCCH support
> • | Mobile Station Class B
> • | Coding Scheme 1 – 4
> CSD:
> • | V.110, RLP, non-transparent
> • | 2.4, 4.8, 9.6, 14.4kbps
> • | USSD
> PPP-stack for GPRS data transfer
> SMS | Point-to-point MT and MO Cell broadcast Text and PDU mode Storage: SIM card plus 25 SMS locations in mobile equipment Transmission of SMS alternatively over CSD or GPRS. Preferred mode can be user defined.
> Fax | Group 3; Class 1
> Audio | Speech codecs:
> • | Half rate HR (ETS 06.20)
> • | Full rate FR (ETS 06.10)
> • | Enhanced full rate EFR (ETS 06.50/06.60/06.80)
> • | Adaptive Multi Rate AMR
> Line echo cancellation, DTMF, 7 ringing tones
> Software
> AT commands | Hayes 3GPP TS 27.007, TS 27.005, Siemens AT commands for RIL compatibility
> Java platform | Java Virtual Machine with APIs for AT Parser, Serial Interface, FlashFileSystem and TCP/IP Stack. Major benefits: seamless integration into Java applications, ease of programming, no need for application microcontroller, extremely cost-efficient hardware and software design – ideal platform for industrial GSM applications. The memory space available for Java programs is around 1.7 MB in the flash file system and around 400k RAM. Application code and data share the space in the flash file system and in RAM.
> SIM Application Toolkit | SAT Release 99
> TCP/IP stack | Access by AT commands
> Remote SIM Access | TC65 supports Remote SIM Access. RSA enables TC65 to use a remote SIM card via its serial interface and an external application, in addition to the SIM card locally attached to the dedicated lines of the application interface. The connection between the external application and the remote SIM card can be a Bluetooth wireless link or a serial link. The necessary protocols and procedures are implemented according to the “SIM Access Profile Interoperability Specification of the Bluetooth Special Interest Group”.
> Firmware update | Generic update from host application over ASC0, ASC1 or USB. Over-the-air (OTA) firmware update is possible via SPI interface.
> Interfaces
> 2 serial interfaces | ASC0:
> • | 8-wire modem interface with status and control lines, unbalanced, asynchronous
> • | Fixed bit rates: 300 bps to 460,800 bps
> • | Autobauding: 1,200 bps to 460,800 bps
> • | RTS0/CTS0 and XON/XOFF flow control.
> • | Multiplex ability according to GSM 07.10 Multiplexer Protocol.
> ASC1:
> • | 4-wire, unbalanced asynchronous interface
> • | Fixed bit rates: 300 bps to 460,800 bps
> • | RTS1/CTS1 and software XON/XOFF flow control
> USB | Supports a USB 2.0 Full Speed (12Mbit/s) slave interface.
> I 2C | I 2C bus for 7-bit addressing and transmission rates up to 400kbps. Programmable with AT^SSPI command. Alternatively, all pins of the I²C interface are configurable as SPI.
> SPI | Serial Peripheral Interface for transmission rates up to 6.5 Mbps. Programmable with AT^SSPI command. If the SPI is active the I²C interface is not available.
> Audio | 2 analog interfaces 1 digital interface (PCM)
> SIM interface | Supported SIM cards: 3V, 1.8V
> Antenna | 50Ohms. External antenna can be connected via antenna connector or solderable pad.
> Module interface | 80-pin board-to-board connector
> Power on/off, Reset
> Power on/off | Switch-on by hardware pin IGT Switch-off by AT command (AT^SMSO) Automatic switch-off in case of critical temperature and voltage conditions.
> Reset | Orderly shutdown and reset by AT command Emergency reset by hardware pin EMERG_RST and IGT.
> Special features
> Charging | Supports management of rechargeable Lithium Ion and Lithium Polymer batteries
> Real time clock | Timer functions via AT commands
> GPIO | 10 I/O pins of the application interface programmable as GPIO. Programming is done via AT commands. Alternatively, GPIO pin10 is configurable as pulse counter.
> Pulse counter | Pulse counter for measuring pulse rates from 0 to 1000 pulses per second. If the pulse counter is active the GPIO10 pin is not available.
> ADC inputs | Analog-to-Digital Converter with two balanced analog inputs for measuring external voltages.
> DAC output | Digital-to-Analog Converter which can provide a PWM signal.
> Phonebook | SIM and phone
> Evaluation kit
> DSB75 | DSB75 Evaluation Board designed to test and type approve Siemens cellular engines and provide a sample configuration for application engineering.