Features • 64K x 32-bit Flash Embedded Memory Cell • Fast Read Access Time • • • • • • – Random Access Time: 70 ns Worst Case (Process, Voltage, Temperature) – Page Access Time: 40 ns Worst Case (Process, Voltage, Temperature) Single Supply Voltage: 1.8V ±10% Page Program Operation – 1024 Pages (64 Words/Page) – Internal Data Latches For 64 Words – Read Capability During Data Load Program Cycle Time: 4 ms per Page Including Auto-erase Full Chip Erase Available in 10 ms rdybsyn Signal For End of Program Detection Very Low Power Dissipation – 8 mA Active Current in Write and Erase – 4 mA Active Current in Random Read – 30 µA Stand-by Current High Reliability CMOS Technology – Typical Endurance: 100K Write/Word – Data Retention: 10 Years Erased State (Charged Gate) Is a Logic “1” Embedded ASIC Memory Cell Description ATC18 64K x 32-bit Low-power Flash The 64K x 32-bit cell is an embedded 2-Mbit Flash electrically erasable and programmable read only memory with a power supply of 1.8V ±10%. The memory is organized as 1024 pages of 64 32-bit words each. The device uses the Atmel ATC18 0.18 µm silicon process. For easy reprogrammability, it does not require a high input voltage for programming: the embedded Flash can be operated with a single 1.8V ±10% power supply. Advance Information • • Re-programming the cell is performed on a page basis: the words to be written (from a minimum of 1 word to a maximum of 64 words) are loaded into the device and then simultaneously written into the targeted page after the full page has been erased during the auto-erase phase. 2 ms are necessary to erase the page, followed by 2 ms to write the words, independent of the number of words that are written in parallel into the targeted page. Thus the write time after the auto-erase varies from a maximum of 2 ms per word if only 1 word is written to a minimum of 32 µs per word if the entire page is written at a time. Memory read is allowed during data loading and forbidden once programming has started. The signal rdybsyn pulses low at the beginning of the program cycle to indicate that the memory is not ready for a read operation. Programming the entire memory can be done using a full chip erase followed by 1024 page write without auto-erase. Compared to full-memory programming using auto-erase on each page, the programming time is reduced by half. At the end of each program cycle, the rdybsyn signal pulses high to indicate that programming is completed and the memory available for a new program or read cycle. Reading data out of the device can be done in an asynchronous and random manner, with 70 ns access time. Rev. 2680A–CASIC–11/02 1 DC and AC Operating Range Conditions are: Operating temperature: -40°C to 85°C • Table 1. Parameters Symbol Parameter Min Typ Max VDD Power Supply 1.6 1.8 2.0 tACC Read Access Time 70 tBACC Page Access Time 40 tWC Note: Write Cycle Time (1) Units ns 4 ms 1. The max value includes auto-erase. Table 2. DC Characteristics Symbol Parameter Condition Max ISB Standby Current VDD = 2.0V 30 uA Random Read: VDD = 2.0V, 10 MHz 4.0 mA Write: VDD = 2.0V 8.0 mA ICC 2 Active Current ATC18 64K x 32-bit Low-power Flash 2680A–CASIC–11/02 ATC18 64K x 32-bit Low-power Flash 3 2680A–CASIC–11/02 4 ATC18 64K x 32-bit Low-power Flash 2680A–CASIC–11/02 Atmel Headquarters Atmel Operations Corporate Headquarters Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany TEL (49) 71-31-67-0 FAX (49) 71-31-67-2340 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France TEL (33) 2-40-18-18-18 FAX (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards 1150 East Cheyenne Mtn. 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