Enel, the major Italian utility well-known for its Telegestore project which involves the replacement of 30 million meters and the implementation of advanced automated meter management (AMM) system solutions, has appointed semiconductor manufacturer STMicroelectronics to supply a kit of semiconductor components for Enel’s static electricity meters.
At the heart of the kit is ST’s ST7538, a single-chip power-line communications FSK (frequency shift keying) transceiver, which integrates the FSK modem function that allows the meter to talk to the utility’s offices, a power amplifier and a variety of frequency synthesis, core logic, voltage regulation, and input/output functions. Another key component is the µPSD3200, a member of ST’s family of programmable system devices that integrates a 40MHz, industry-standard microcontroller along with up to 288-kbytes of dual-bank Flash memory, 32-kbytes of SRAM, a Flash-based CPLD (complex programmable logic device) and a JTAG ISP (in-system programming) interface to simplify testing. The µPSD3200 offers the world’s largest memory densities for 8051-class microcontrollers.
The kit also includes the VIPer (Switched-Mode Power Supply) chip built with ST’s proprietary VIPower smart-power technology and the M41T56M6, a low power consumption real-time clock calendar device that features integrated battery switchover and write-protect functions, plus software calibration for high-accuracy time-management features of the system.