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Intel StrataFlash Memory (J3)

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TE28F640J3C-120 Product Details


The Intel StrataFlash® memory family contains high-density memories organized as 32 Mbytes or 16Mwords (256-Mbit, available on the 0.18µm lithography process only), 16 Mbytes or 8 Mwords (128-Mbit), 8 Mbytes or 4 Mwords (64-Mbit), and 4 Mbytes or 2 Mwords (32-Mbit). These devices can be accessed as 8- or 16-bit words. The 128-Mbit device is organized as one-hundredtwenty-eight 128-Kbyte (131,072 bytes) erase blocks. The 64-Mbit device is organized as sixtyfour 128-Kbyte erase blocks while the 32-Mbit device contains thirty-two 128-Kbyte erase blocks. A 128-bit Protection Register has multiple uses, including unique flash device identification. The device’s optimized architecture and interface dramatically increases read performance by supporting page-mode reads. This read mode is ideal for non-clock memory systems. A Common Flash Interface (CFI) permits software algorithms to be used for entire families of devices. This allows device-independent, JEDEC ID-independent, and forward- and backwardcompatible software support for the specified flash device families. Flash vendors can standardize their existing interfaces for long-term compatibility. Scalable Command Set (SCS) allows a single, simple software driver in all host systems to work with all SCS-compliant flash memory devices, independent of system-level packaging (e.g., memory card, SIMM, or direct-to-board placement). Additionally, SCS provides the highest system/device data transfer rates and minimizes device and system-level implementation costs. A Command User Interface (CUI) serves as the interface between the system processor and internal operation of the device. A valid command sequence written to the CUI initiates device automation. An internal Write State Machine (WSM) automatically executes the algorithms and timings necessary for block erase, program, and lock-bit configuration operations. A block erase operation erases one of the device’s 128-Kbyte blocks typically within one second— independent of other blocks. Each block can be independently erased 100,000 times. Block erase suspend mode allows system software to suspend block erase to read or program data from any other block. Similarly, program suspend allows system software to suspend programming (byte/ word program and write-to-buffer operations) to read data or execute code from any other block that is not being suspended. Each device incorporates a Write Buffer of 32 bytes (16 words) to allow optimum programming performance. By using the Write Buffer, data is programmed in buffer increments. This feature can improve system program performance more than 20 times over non-Write Buffer writes. Blocks are selectively and individually lockable in-system.Individual block locking uses block lock-bits to lock and unlock blocks. Block lock-bits gate block erase and program operations. Lock-bit configuration operations set and clear lock-bits (Set Block Lock-Bit and Clear Block Lock-Bits commands). The Status Register indicates when the WSM’s block erase, program, or lock-bit configuration operation is finished. The STS (STATUS) output gives an additional indicator of WSM activity by providing both a hardware signal of status (versus software polling) and status masking (interrupt masking for background block erase, for example). Status indication using STS minimizes both CPU overhead and system power consumption. When configured in level mode (default mode), it acts as a RY/ BY# signal. When low, STS indicates that the WSM is performing a block erase, program, or lockbit configuration. STS-high indicates that the WSM is ready for a new command, block erase is 256-Mbit J3 (x8/x16) Datasheet 9 suspended (and programming is inactive), program is suspended, or the device is in reset/powerdown mode. Additionally, the configuration command allows the STS signal to be configured to pulse on completion of programming and/or block erases. Three CE signals are used to enable and disable the device. A unique CE logic design (see Table 13, “Chip Enable Truth Table” on page 33) reduces decoder logic typically required for multi-chip designs. External logic is not required when designing a single chip, a dual chip, or a 4- chip miniature card or SIMM module. The BYTE# signal allows either x8 or x16 read/writes to the device. BYTE#-low selects 8-bit mode; address A0 selects between the low byte and high byte. BYTE#-high enables 16-bit operation; address A1 becomes the lowest order address and address A0 is not used (don’t care). A device block diagram is shown in Figure 4 on page 14. When the device is disabled (see Table 13 on page 33), with CEx at VIH and RP# at VIH, the standby mode is enabled. When RP# is at VIL, a further power-down mode is enabled which minimizes power consumption and provides write protection during reset. A reset time (tPHQV) is required from RP# going high until data outputs are valid. Likewise, the device has a wake time (tPHWL) from RP#-high until writes to the CUI are recognized. With RP# at VIL, the WSM is reset and the Status Register is cleared.


TE28F640J3C-120 Pinout
(Picture: Pinout)

TE28F640J3C-120 Block Diagram
(Picture: Diagram)

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
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(3)The TE28F640J3C-120 is unused and only in the original unpacked packaging.
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