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DT28F160F3B120 Datasheet(PDF) 5 Page - Intel Corporation |
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DT28F160F3B120 Datasheet(HTML) 5 Page - Intel Corporation |
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5 / 47 page  E FAST BOOT BLOCK DATASHEET 5 PRODUCT PREVIEW 1.0 INTRODUCTION This datasheet contains 8- and 16-Mbit Fast Boot Block memory information. Section 1.0 provides a flash memory overview. Sections 2.0 through 8.0 describe the memory functionality and electrical specifications for extended and automotive temperature product offerings. 1.2 Product Overview The Fast Boot Block flash memory family provides density upgrades with pinout compatibility for 8- and 16-Mbit densities. This family of products are high performance, low voltage memories with a 16-bit data bus and individually erasable blocks. These blocks are optimally sized for code and data storage. Eight 4-Kword parameter blocks are positioned at either the top (denoted by -T suffix) or bottom (denoted by -B suffix) of the address map. The rest of the device is grouped into 32-Kword main blocks. The upper two (or lower two) parameter and all main blocks can be locked for complete code protection. The device’s optimized architecture and interface dramatically increases read performance beyond previously attainable levels. It supports asynchronous page-mode and synchronous burst reads from main blocks (parameter blocks support single asynchronous and synchronous reads). Upon initial power-up or return from reset, the device defaults to a page-mode read configuration. Page-mode read configuration is ideal for non-clock memory systems and is compatible with page- mode ROM. Synchronous burst reads are enabled by writing to the read configuration register. In synchronous burst mode, the CLK input increments an internal burst address generator, synchronizes the flash memory with the host CPU, and outputs data on every rising (or falling) CLK edge up to 54 MHz (25 MHz for automotive temperature). An output signal, WAIT#, is also provided to ease CPU to flash memory communication and synchronization during continuous burst operations. In addition to the enhanced architecture and interface, this family of products incorporates SmartVoltage technology which enables fast factory programming and low power designs. Specifically designed for low voltage systems, Fast Boot Block flash memory components support read operations at 2.7 V (3.3 V for automotive temperature) VCC and block erase and program operations at 2.7 V (3.3 V for automotive temperature) and 12 V VPP. The 12 V VPP option renders the fastest program performance to increase factory programming throughput. With the 2.7 V (3.3 V for automotive temperature) VPP option, VCC and VPP can be tied together for a simple, low power design. In addition to the voltage flexibility, the dedicated VPP pin gives complete data protection when VPP ≤ VPPLK. The flexible input/output (I/O) voltage capability helps reduce system power consumption and simplify interfacing to sub 2.7 V and 5 V CPUs. Powered by VCCQ pins, the I/O buffers can operate at a lower voltage than the flash memory core. With VCCQ voltage at 1.65 V, the I/Os swing between GND and 1.65 V, reducing I/O power consumption by 65% over standard 3 V flash memory components. The low voltage and 5 V-safe feature also helps ease CPU interfacing by adapting to the CPU’s bus voltage. The device’s Command User Interface (CUI) serves as the interface between the system processor and internal flash memory operation. A valid command sequence written to the CUI initiates device automation. This automation is controlled by an internal Write State Machine (WSM) which automatically executes the algorithms and timings necessary for block erase and program operations. The status register provides WSM feedback by signifying block erase or program completion and status. Block erase and program automation allows erase and program operations to be executed using an industry-standard two-write command sequence. A block erase operation erases one block at a time, and data is programmed in word increments. Erase suspend allows system software to suspend an ongoing block erase operation in order to read from or program data to any other block. Program suspend allows system software to suspend an ongoing program operation in order to read from any other location. Fast Boot Block flash memory devices offer two low power savings features: Automatic Power Savings (APS) and standby mode. The device automatically enters APS mode following the completion of a read cycle. Standby mode is initiated when the system deselects the device by driving CE# inactive or RST# active. RST# also resets the device to read array, provides write protection, and clears the status register. Combined, these two features significantly reduce power consumption. |
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