●General Description
●The S29AL004D is a 4 Mbit, 3.0 volt-only Flash memory organized as 524,288 bytes or 262,144 words. The device is offered in 48-ball FBGA, 44-pin SO, and 48-pin TSOP packages. The word-wide data (x16) appears on DQ15–DQ0; the byte-wide (x8) data appears on DQ7–DQ0. This device requires only a single, 3.0 volt VCC supply to perform read, program, and erase operations. A standard EPROM programmer can also be used to program and erase the device.
●Distinctive Characteristics
●Architectural Advantages
●■ Single power supply operation
● — 2.7 to 3.6 volt read and write operations for battery powered applications
●■ Manufactured on 200nm process technology
● — Compatible with 320nm Am29LV400B and MBM29LV400T/BC
●■ Flexible sector architecture
● — One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and seven 64 Kbyte sectors (byte mode)
● — One 8 Kword, two 4 Kword, one 16 Kword, and seven 32 Kword sectors (word mode)
● — Supports full chip erase
●■ Unlock Bypass Program Command
● — Reduces overall programming time when issuing multiple program command sequences
●■ Top or bottom boot block configurations available
●■ Embedded Algorithms
● — Embedded Erase algorithm automatically preprograms and erases the entire chip or any combination of designated sectors
● — Embedded Program algorithm automatically writes and verifies data at specified addresses
●■ Compatibility with JEDEC standards
● — Pinout and software compatible with single-power supply Flash
● — Superior inadvertent write protection
●■ Sector Protection features
● — A hardware method of locking a sector to prevent any program or erase operations within that sector
● — Sectors can be locked in-system or via programming equipment
● — Temporary Sector Unprotect feature allows code changes in previously locked sectors
●Performance Characteristics
●■ High performance
● — Access times as fast as 70 ns
●■ Ultra low power consumption (typical values at 5 MHz)
● — 200 nA Automatic Sleep mode current
● — 200 nA standby mode current
● — 9 mA read current
● — 20 mA program/erase current
●■ Cycling Endurance: 1,000,000 cycles per sector typical
●■ Data Retention: 20 years typical Package Options
●■ 48-ball FBGA
●■ 48-pin TSOP
●■ 44-pin SO
●Software Features
●■ Data# Polling and toggle bits
● — Provides a software method of detecting program or erase operation completion
●■ Erase Suspend/Erase 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
●Hardware Features
●■ Ready/Busy# pin (RY/BY#)
● — Provides a hardware method of detecting program or erase cycle completion
●■ Hardware reset pin (RESET#)
● — Hardware method to reset the device to reading array data
