TCM8002

Supply voltage range, VDD, VSS (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 6 V
Input voltage range, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VDD + 0.5 V
Output voltage range (includes open-drain outputs), VO . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VDD + 0.5 V
Operating ambient temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C


† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: Voltage Values are with respect to GND.

The TCM8002 provides the data transceiving, data processing, and SAT (supervisory audio tone) functions for the AMPS (advanced mobile phone service) and TACS (total access communications system) cellular telephone standards. A highly integrated device, the TCM8002 includes a number of additional functions that are helpful in the implementation of the typical cellular telephone. These extra functions include a watchdog timer, which is normally external to the telephone microcontroller, and two 8-bit- and one 4-bit-wide user-programmable general-purpose input/output ports. These can be used to provide port expansion for the microcontroller. An 8-bit counter/timer for user-defined purposes is also included.

To facilitate the application of the TCM8002 and to minimize the number of connections, a single serial interface to the microcontroller is used for controlling, receiving, and transmitting data. There is also a dedicated interface, including a compatible clock signal, to the companion TCM8010 audio processor that performs most of the audio processing required in a cellular telephone. Additional outputs are also provided for interfacing to other audio processors.

The TCM8002 is built using a low-power CMOS process and operates with a 5-V or 3.3-V power supply. When used in conjunction with the TCM8010, a unique and very compact low-power solution for AMPS/TACS baseband processing in 5-V and 3-V systems is realized.