A29040A Series
512K X 8 Bit CMOS 5.0 Volt-only,
Uniform Sector Flash Memory
Preliminary
Features
- Embedded Program algorithm automatically writes
and verifies bytes at specified addresses
nTypical 100,000 program/erase cycles per sector
n20-year data retention at 125°C
n5.0V ± 10% for read and write operations
nAccess times:
- 55/70/90 (max.)
nCurrent:
- 20 mA typical active read current
- 30 mA typical program/erase current
- 1 mA typical CMOS standby
- Reliable operation for the life of the system
nCompatible with JEDEC-standards
- Pinout and software compatible with single-power-
supply Flash memory standard
nFlexible sector architecture
- Superior inadvertent write protection
- 8 uniform sectors of 64 Kbyte each
- Any combination of sectors can be erased
- Supports full chip erase
n
Polling and toggle bits
Data
- Provides a software method of detecting completion
of program or erase operations
- Sector protection:
A hardware method of protecting sectors to prevent
any inadvertent program or erase operations within
that sector
nErase 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
nEmbedded Erase Algorithms
- Embedded Erase algorithm will automatically erase
the entire chip or any combination of designated
sectors and verify the erased sectors
nPackage options
- 32-pin P-DIP, PLCC, or TSOP (Forward type)
General Description
The A29040A is a 5.0 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 A29040A 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 A29040A can also be programmed in standard
EPROM programmers.
The A29040A 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 A29040A offers access times of 55, 70 and 90
ns, allowing high-speed microprocessors to operate without
wait states. To eliminate bus contention the device has
The A29040A 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)
before executing the erase operation. During erase, the
device automatically times the erase pulse widths and
verifies proper erase margin.
separate chip enable (
), write enable (
) and output
WE
CE
enable (
) controls.
OE
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.
PRELIMINARY
(December, 2002, Version 0.2)
1
AMIC Technology, Corp.
5秒后页面跳转
全球首块英伟达H200交付 黄仁勋“送货上门”
常用8脚开关电源芯片型号大全
74HC04芯片引脚图及功能、应用电路图讲解
CR6842芯片参数、引脚配置、应用电路图详解
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
