A29002 AMIC Technology, A29002 Datasheet

A29002

Manufacturer Part Number

A29002

Description

256K X 8 Bit CMOS 5.0 Volt-only/ Boot Sector Flash Memory

Manufacturer

AMIC Technology

Datasheet

1.A29002.pdf (32 pages)

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General Description

The A29002 is a 5.0 volt-only Flash memory organized as

262,144 bytes of 8 bits each. The A29002 offers the

function, but it is not available on A290021. The 256 Kbytes

of data are further divided into seven sectors for flexible

sector erase capability. The 8 bits of data appear on I/O

I/O

is offered in 32-pin PLCC, TSOP, and PDIP packages. This

device is designed to be programmed in-system with the

standard system 5.0 volt VCC supply. Additional 12.0 volt

VPP is not required for in-system write or erase operations.

However, the A29002 can also be programmed in standard

EPROM programmers.

The A29002 has the first toggle bit, I/O

whether an Embedded Program or Erase is in progress, or it

is in the Erase Suspend. Besides the I/O

A29002 has a second toggle bit, I/O

addressed sector is being selected for erase. The A29002

also offers the ability to program in the Erase Suspend mode.

The standard A29002 offers access times of 55, 70, 90, 120,

and 150 ns, allowing high-speed microprocessors to operate

without wait states. To eliminate bus contention the device

has separate chip enable (

output enable (

Features

n 5.0V

n Access times:

n Current:

n Flexible sector architecture

n Top or bottom boot block configurations available

n Embedded Erase Algorithms

(February, 2002, Version 1.0)

- 16 Kbyte/ 8 KbyteX2/ 32 Kbyte/ 64 KbyteX3 sectors

- Any combination of sectors can be erased

- Supports full chip erase

- Sector protection:

- 55/70/90/120/150 (max.)

- 20 mA typical active read current

- 30 mA typical program/erase current

- 1 A typical CMOS standby

- Embedded Erase algorithm will automatically erase

- Embedded Program algorithm automatically writes

while the addresses are input on A0 to A17. The A29002

A hardware method of protecting sectors to prevent

any inadvertent program or erase operations within

that sector

the entire chip or any combination of designated

sectors and verify the erased sectors

and verifies bytes at specified addresses

10% for read and write operations

) controls.

), write enable ( WE ) and

, to indicate whether the

, which indicates

toggle bit, the

RESET

The device requires only a single 5.0 volt power supply for both

read and write functions. Internally generated and regulated

voltages are provided for the program and erase operations.

The A29002 is entirely software command set compatible with

the JEDEC single-power-supply Flash standard. Commands

are

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 writing the proper program

command sequence. This initiates the Embedded Program

algorithm - an internal algorithm that automatically times the

program pulse widths and verifies proper program margin.

Device erasure occurs by executing the proper erase command

sequence. This initiates the Embedded Erase algorithm - an

internal algorithm that automatically preprograms the array (if it

is not already programmed) before executing the erase

operation. During erase, the device automatically times the

erase pulse widths and verifies proper erase margin.

n Typical 100,000 program/erase cycles per sector

n 20-year data retention at 125 C

n Compatible with JEDEC-standards

n Erase Suspend/Erase Resume

n Hardware reset pin (

n Package options

256K X 8 Bit CMOS 5.0 Volt-only,

- Reliable operation for the life of the system

- Pinout and software compatible with single-power-

- Superior inadvertent write protection

- Provides a software method of detecting completion

- Suspends a sector erase operation to read data

- Hardware method to reset the device to reading array

- 32-pin P-DIP, PLCC, or TSOP (Forward type)

Data

written

supply Flash memory standard

data (not available on A290021)

of program or erase operations

from, or program data to, a non-erasing sector, then

resumes the erase operation

A29002/A290021 Series

Polling and toggle bits

Boot Sector Flash Memory

the

command

RESET

AMIC Technology, Inc.

)

using

standard

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