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3 / 84 page ADVANCE INFORMATION This document contains information on a product under development at Advanced Micro Devices. The information is intended to help you evaluate this product. Do not design in this product without contacting the factory. AMD re- serves the right to change or discontinue work on this proposed product without notice. Publication# 31105 Rev: A Amendment0 Issue Date: December 5, 2003 Refer to AMD’s Website (www.amd.com) for the latest information. Am49BDS640AH Stacked Multichip Package (MCP), Flash Memory and pSRAM CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode 64 Megabit (4 M x 16-Bit) Flash Memory, and 16 Mbit (1 M x 16-Bit) pSRAM DISTINCTIVE CHARACTERISTICS ARCHITECTURAL ADVANTAGES ■ Single 1.8 volt read, program and erase (1.65 to 1.95 volt) ■ Manufactured on 0.13 µm process technology ■ VersatileIO™ (VIO) Feature — Device generates data output voltages and tolerates data input voltages as determined by the voltage on the VIO pin — 1.8V compatible I/O signals — Contact factory for availability of 1.5V compatible I/O signals ■ Simultaneous Read/Write operation — Data can be continuously read from one bank while executing erase/program functions in other bank — Zero latency between read and write operations — Four bank architecture: 8Mb/24Mb/24Mb/8Mb ■ Programable Burst Interface — 2 Modes of Burst Read Operation — Linear Burst: 8, 16, and 32 words with wrap-around — Continuous Sequential Burst ■ SecSiTM (Secured Silicon) Sector region — Up to 128 words accessible through a command sequence — Up to 64 factory-locked words — Up to 64 customer-lockable words ■ Sector Architecture — Sixteen 4 Kword sectors and one hundred twenty-six 32 Kword sectors — Banks A and D each contain eight 4 Kword sectors and fifteen 32 Kword sectors; Banks B and C each contain forty-eight 32 Kword sectors — Sixteen 4 Kword boot sectors: eight at the top of the address range and eight at the bottom of the address range ■ Minimum 1 million erase cycle guarantee per sector ■ 20-year data retention at 125°C — Reliable operation for the life of the system PERFORMANCE CHARCTERISTICS ■ Read access times at 66/54 MHz (CL=30 pF) — Burst access times of 11/13.5 ns at industrial temperature range — Synchronous latency of 56/69 ns — Asynchronous random access times of 50/55 ns ■ Power dissipation (typical values, CL = 30 pF) — Burst Mode Read: 10 mA — Simultaneous Operation: 25 mA — Program/Erase: 15 mA — Standby mode: 0.2 µA HARDWARE FEATURES ■ Handshaking feature — Provides host system with minimum possible latency by monitoring RDY — Reduced Wait-state handshaking option further reduces initial access cycles required for burst accesses beginning on even addresses ■ Hardware reset input (RESET#) — Hardware method to reset the device for reading array data ■ WP# input — Write protect (WP#) function allows protection of the four highest and four lowest 4 kWord boot sectors, regardless of sector protect status ■ Persistent Sector Protection — A command sector protection method to lock combinations of individual sectors and sector groups to prevent program or erase operations within that sector — Sectors can be locked and unlocked in-system at VCC level ■ Password Sector Protection — A sophisticated sector protection method to lock combinations of individual sectors and sector groups to prevent program or erase operations within that sector using a user-defined 64-bit password ■ ACC input: Acceleration function reduces programming time; all sectors locked when ACC = VIL ■ CMOS compatible inputs, CMOS compatible outputs ■ Low VCC write inhibit SOFTWARE FEATURES ■ Supports Common Flash Memory Interface (CFI) ■ Software command set compatible with JEDEC 42.4 standards — Backwards compatible with Am29F and Am29LV families ■ Data# Polling and toggle bits — Provides a software method of detecting program and erase operation completion ■ Erase Suspend/Resume — Suspends an erase operation to read data from, or program data to, a sector that is not being erased, then resumes the erase operation ■ Unlock Bypass Program command — Reduces overall programming time when issuing multiple program command sequences |
Nº de peça semelhante - AM49BDS640AHE8I |
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Descrição semelhante - AM49BDS640AHE8I |
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