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DSM2180F3V90T6 Datasheet(PDF) 1 Page - STMicroelectronics |
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DSM2180F3V90T6 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 63 page  1/63 December 2001 DSM2180F3V DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-218X Family (3.3V Supply) FEATURES SUMMARY s Glueless Connection to DSP – Easily add memory, logic, and I/O to DSP s 128K Byte Flash Memory – For Bootloading and/or Data Overlay Memory – Programmable Decoding and Paging Logic allows accessing Flash memory as Byte DMA (BDMA) and as External Data Overlay mem- ory – Rapidly access Flash memory with BDMA for booting and loading internal DSP Overlay memory. Alternatively access the same Flash memory as External Data Overlay memory to efficiently write Flash memory with code up- dates and data, a byte at a time with no DMA setup overhead – Individual 16K Byte Flash memory sectors match size of DSP External Data Overlay window for efficient data management. Inte- grated page logic provides easy DSP access to all 128K Bytes. – DSM connects to lower byte of 16-bit DSP data bus. Byte-wide accesses to 8-bit BDMA space. Half-word accesses to 16-bit Data Memory Overlay and 16-bit I/O Mem space. s 3.3V Devices (±10%) s Up to 16 Multifunction I/O Pins – Increase total DSP system I/O capability – I/O controlled by DSP software or PLD logic – 4mA I/O pin drive s General purpose PLD – Over 3,000 Gates of PLD with 16 macro cells – Use for peripheral glue logic to keypads, con- trol panel, displays, LCD, UART devices, etc. – Eliminate PLDs and external logic devices – Create state machines, chip selects, simple shifters and counters, clock dividers, delays – Simple PSDsoft ExpressTM software ...Free Figure 1. Packages s In-System Programming (ISP) with JTAG – Program entire chip in 10-20 seconds with no involvement of the DSP – Eliminate sockets for pre-programmed mem- ory and logic devices – Efficient manufacturing allows easy product testing and Just-In-Time inventory – Use low-cost FlashLINKTM cable with PC s Content Security – Programmable Security Bit blocks access of device programmers and readers s Zero-Power Technology –25 µA at VCC=3.3V s Small Packaging – 52-pin PQFP or 52-pin PLCC s Memory Speed –150 ns PLCC52 (K) PQFP52 (T) |
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