A29L040-70 데이터 시트보기 (PDF) - AMIC Technology

부품명

상세내역

제조사

A29L040-70

512K X 8 Bit CMOS 3.0 Volt-only, Uniform Sector Flash Memory

AMIC Technology 

A29L040 Series

Preliminary

512K X 8 Bit CMOS 3.0 Volt-only,

Uniform Sector Flash Memory

Features

n 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 for compatibility with high

performance 3.3 volt microprocessors

n Access times:

- 70 (max.)

n Current:

- 4 mA typical active read current

- 20 mA typical program/erase current

- 200 nA typical CMOS standby

- 200 nA Automatic Sleep Mode current

n Flexible sector architecture

- 8 uniform sectors of 64 Kbyte each

- Any combination of sectors can be erased

- Supports full chip erase

- Sector protection:

A hardware method of protecting sectors to prevent

any inadvertent program or erase operations within

that sector

n Embedded Erase Algorithms

- Embedded Erase algorithm will automatically erase

the entire chip or any combination of designated

sectors and verify the erased sectors

- Embedded Program algorithm automatically writes

and verifies bytes at specified addresses

n Typical 100,000 program/erase cycles per sector

n 20-year data retention at 125°C

- Reliable operation for the life of the system

n Compatible with JEDEC-standards

- Pinout and software compatible with single-power-

supply Flash memory standard

- Superior inadvertent write protection

n Data Polling and toggle bits

- Provides a software method of detecting completion

of program or erase operations

n Erase Suspend/Erase Resume

- Suspends a sector erase operation to read data

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

resumes the erase operation

n Package options

- 32-pin DIP, PLCC, TSOP (8mm x 20mm) or sTSOP

(8mm x 14mm)

General Description

The A29L040 is a 3.0 volt-only Flash memory organized as

524,288 bytes of 8 bits each. The 512 Kbytes of data are

further divided into eight sectors of 64 Kbytes each for

flexible sector erase capability. The 8 bits of data appear on

I/O0 - I/O7 while the addresses are input on A0 to A18. The

A29L040 is offered in 32-pin PLCC, TSOP (8mm x 20mm)

or sTSOP (8mm x 14mm) packages. This device is

designed to be programmed in-system with the standard

system 3.0 volt VCC supply. Additional 12.0 volt VPP is not

required for in-system write or erase operations. However,

the A29L040 can also be programmed in standard EPROM

programmers.

The A29L040 has a second toggle bit, I/O2, to indicate

whether the addressed sector is being selected for erase,

and also offers the ability to program in the Erase Suspend

mode. The standard A29L040 offers access times of 70ns,

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 A29L040 is entirely software 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 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)

PRELIMINARY (June, 2003, Version 0.1)

1

AMIC Technology, Corp.

Share Link: