ADVANCE INFORMATION Am29LV004B 4 Megabit (512 K x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory DISTINCTIVE CHARACTERISTICS ■ Single power supply operation — Full voltage range: 2.7 to 3.6 volt read and write operations for battery-powered applications — Regulated voltage range: 3.0 to 3.6 volt read and write operations and for compatibility with high performance 3.3 volt microprocessors ■ Manufactured on 0.35 µm process technology — Compatible with 0.5 µm Am29LV004 device ■ High performance — Full voltage range: access times as fast as 80 ns — Regulated voltage range: 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 — 7 mA read current — 15 mA program/erase current ■ Flexible sector architecture — One 16 Kbyte, two 8 Kbyte, one 32 Kbyte, and seven 64 Kbyte sectors — Supports full chip erase — 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 ■ 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 ■ Minimum 1,000,000 write cycle guarantee per sector ■ Package option — 40-pin TSOP ■ Compatibility with JEDEC standards — Pinout and software compatible with singlepower supply Flash — Superior inadvertent write protection ■ Data# Polling and toggle bits — Provides a software method of detecting program or erase operation completion ■ Ready/Busy# pin (RY/BY#) — Provides a hardware method of detecting program or erase cycle 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 reset pin (RESET#) — Hardware method to reset the device to reading array data This document contains information on a product under development at Advanced Micro Devices. The information is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed product without notice. Publication# 21522 Rev: A Amendment/0 Issue Date: January 1998 Refer to AMD’s Website (www.amd.com) for the latest information. A D V A N C E I N F O R M A T I O N GENERAL DESCRIPTION The Am29LV004B is an 4 Mbit, 3.0 volt-only Flash memory organized as 524,288 bytes. The device is offered in a 40-pin TSOP package. 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. This device is manufactured using AMD’s 0.35 µm process technology, and offers all the features and benefits of the Am29LV004, which was manufactured using 0 . 5 µ m p r o c e s s t e c h n o l o gy. I n a d d i t i o n , t h e Am29LV004B features unlock bypass programming and in-system sector protection/unprotection. The standard device offers access times of 70, 80, 90, and 120 ns, allowing high speed microprocessors to operate without wait states. To eliminate bus contention the device has separate chip enable (CE#), write enable (WE#) and output enable (OE#) controls. The device requires only a single 3.0 volt power supply for both read and write functions. Internally generated and regulated voltages are provided for the program and erase operations. The device is entirely command set compatible with the JEDEC single-power-supply Flash standard. Commands are written to the command register using standard microprocessor write timings. Register contents serve as input to an internal state-machine that controls the erase and programming circuitry. Write cycles also internally latch addresses and data needed for the programming and erase operations. Reading data out of the device is similar to reading from other Flash or EPROM devices. Device programming occurs by executing the program command sequence. This initiates the Embedded Program algorithm—an internal algorithm that automatically times the program pulse widths and verifies proper cell margin. The Unlock Bypass mode facilitates faster programming times by requiring only two write cycles to program data instead of four. Device erasure occurs by executing the erase command sequence. This initiates the Embedded Erase algorithm—an internal algorithm that automatically preprograms the array (if it is not already programmed) before 2 executing the erase operation. During erase, the device automatically times the erase pulse widths and verifies proper cell margin. The host system can detect whether a program or erase operation is complete by observing the RY/BY# pin, or by reading the DQ7 (Data# Polling) and DQ6 (toggle) status bits. After a program or erase cycle has been completed, the device is ready to read array data or accept another command. The sector erase architecture allows memory sectors to be erased and reprogrammed without affecting the data contents of other sectors. The device is fully erased when shipped from the factory. Hardware data protection measures include a low VCC detector that automatically inhibits write operations during power transitions. The hardware sector protection feature disables both program and erase operations in any combination of the sectors of memory. This can be achieved in-system or via programming equipment. The Erase Suspend feature enables the user to put erase on hold for any period of time to read data from, or program data to, any sector that is not selected for erasure. True background erase can thus be achieved. The hardware RESET# pin terminates any operation in progress and resets the internal state machine to reading array data. The RESET# pin may be tied to the system reset circuitry. A system reset would thus also reset the device, enabling the system microprocessor to read the boot-up firmware from the Flash memory. The device offers two power-saving features. When addresses have been stable for a specified amount of time, the device enters the automatic sleep mode. The system can also place the device into the standby mode. Power consumption is greatly reduced in both these modes. AMD’s Flash technology combines years of Flash memory manufacturing experience to produce the highest levels of quality, reliability and cost effectiveness. The device electrically erases all bits within a sector simultaneously via Fowler-Nordheim tunneling. The data is programmed using hot electron injection. Am29LV004B A D V A N C E I N F O R M A T I O N PRODUCT SELECTOR GUIDE Family Part Number Speed Options Am29LV004B Regulated Voltage Range: VCC =3.0–3.6 V -70R Full Voltage Range: VCC = 2.7–3.6 V -80 -90 -120 Max access time, ns (tACC) 70 80 90 120 Max CE# access time, ns (tCE) 70 80 90 120 Max OE# access time, ns (tOE) 30 30 35 50 Note: See “AC Characteristics” for full specifications. BLOCK DIAGRAM DQ0–DQ7 RY/BY# VCC Sector Switches VSS Erase Voltage Generator RESET# WE# Input/Output Buffers State Control Command Register PGM Voltage Generator Chip Enable Output Enable Logic CE# OE# VCC Detector Address Latch STB Timer A0–A18 STB Data Latch Y-Decoder Y-Gating X-Decoder Cell Matrix 21522A-1 Am29LV004B 3 A D V A N C E I N F O R M A T I O N CONNECTION DIAGRAMS A16 A15 A14 A13 A12 A11 A9 A8 WE# RESET# NC RY/BY# A18 A7 A6 A5 A4 A3 A2 A1 A17 VSS NC NC A10 DQ7 DQ6 DQ5 DQ4 VCC VCC NC DQ3 DQ2 DQ1 DQ0 CE# VSS CE# A0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 Standard TSOP Reverse TSOP 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 A17 VSS NC NC A10 DQ7 DQ6 DQ5 DQ4 VCC VCC NC DQ3 DQ2 DQ1 DQ0 OE# VSS CE# A0 A16 A15 A14 A13 A12 A11 A9 A8 WE# RESET# NC RY/BY# A18 A7 A6 A5 A4 A3 A2 A1 21522A-2 4 Am29LV004B A D V A N C E I N F O R M A T I O N PIN CONFIGURATION A0–A18 LOGIC SYMBOL = 19 addresses 19 DQ0–DQ7 = 8 data inputs/outputs A0–A18 CE# = Chip enable OE# = Output enable WE# = Write enable CE# RESET# = Hardware reset pin, active low OE# RY/BY# = Ready/Busy# output WE# VCC = 3.0 volt-only single power supply (see Product Selector Guide for speed options and voltage supply tolerances) RESET# VSS = Device ground NC = Pin not connected internally 8 DQ0–DQ7 RY/BY# 21522A-3 Am29LV004B 5 A D V A N C E I N F O R M A T I O N ORDERING INFORMATION Standard Products AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the elements below. Am29LV004B T -70R E C OPTIONAL PROCESSING Blank = Standard Processing B = Burn-in (Contact an AMD representative for more information) TEMPERATURE RANGE C = Commercial (0°C to +70°C) I = Industrial (–40°C to +85°C) E = Extended (–55°C to +125°C) PACKAGE TYPE E = 40-Pin Thin Small Outline Package (TSOP) Standard Pinout (TS 040) F = 40-Pin Thin Small Outline Package (TSOP) Reverse Pinout (TSR040) SPEED OPTION See Product Selector Guide and Valid Combinations BOOT CODE SECTOR ARCHITECTURE T = Top Sector B = Bottom Sector DEVICE NUMBER/DESCRIPTION Am29LV004B 4 Megabit (512 K x 8-Bit) CMOS Flash Memory 3.0 Volt-only Read, Program, and Erase Valid Combinations Valid Combinations Am29LV004BT-70R, Am29LV004BB-70R Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations. EC, EI, FC, FI Am29LV004BT-80, Am29LV004BB-80 Am29LV004BT-90, Am29LV004BB-90 EC, EI, EE, FC, FI, FE Am29LV004BT-120, Am29LV004BB-120 Trademarks Copyright © 1998 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc. Product names used in this publication are for identification purposes only and may be trademarks of their respective companies. 6 Am29LV004B