FTA-T-02 Multi-function Data Acquisition Device

The system of FTA-T-02 is a multifunctional data acquisition device, capable of 12-bit A/D conversion at a rate of up to 40k times/s, and can save the acquired data into Flash ROM to prevent power-down loss. The technical parameters are as follows: (1) up to 32K bytes of sampling data can be saved; (2) four segments of the system configuration programme can be stored at the same time, 4K bytes per segment, totalling 16K bytes;

Due to the characteristics of the FTA-T-02 itself, in the programming stage after writing data can not be read and write operations, so in order to ensure the normal operation of the system sampling and microcontroller operation, it is necessary to add an additional 32K bytes of RAM as a data cache. 56K bytes are occupied by the FTA-T-02’s system program, interrupt service program, etc. (Flash ROM and RAM are reserved for 28K bytes), the total need for storage. ), for a total of 136K bytes of storage space required. This demand has exceeded the 64K byte addressing range of the 96 series microcontrollers, for which a memory module was designed

FTA-T-02 adopts ATMEL’s AT29C1024, with a capacity of 128K bytes and a data line width of 16 bits; the RAM memory consists of two CY7C199s, with a data line width of 16 bits and a capacity of 64K bytes. 80C196 microcontroller’s ALE is the address latched signal, /WE is the write active signal, /RD is the read active signal. READY is the ready signal.MCS-96 series microcontrollers support 8-bit and 16-bit operation modes, in order to improve the performance of the system, the 16-bit operation mode is selected.