Datasheet > 存储 > 闪存> W19B320ATB

W19B320ATB

更新时间： 2024-02-04 07:14:13

品牌	Logo	应用领域
华邦 - WINBOND		/
页数	文件大小	规格书
53页	480K
描述
4M × 8/2M × 16 BITS 3V FLEXIBLE BANK FLASH MEMORY

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W19B320ATB 技术参数

生命周期：	Obsolete	零件包装代码：	TSOP
包装说明：	TSOP-48	针数：	48
Reach Compliance Code：	unknown	ECCN代码：	3A991.B.1.A
HTS代码：	8542.32.00.51	风险等级：	5.56
最长访问时间：	70 ns	其他特性：	TOP BOOT BLOCK
备用内存宽度：	8	启动块：	TOP
JESD-30 代码：	R-PDSO-G48	长度：	18.4 mm
内存密度：	33554432 bit	内存集成电路类型：	FLASH
内存宽度：	16	功能数量：	1
端子数量：	48	字数：	2097152 words
字数代码：	2000000	工作模式：	ASYNCHRONOUS
最高工作温度：	85 °C	最低工作温度：	-20 °C
组织：	2MX16	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	并行/串行：	PARALLEL
编程电压：	3 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	最大供电电压 (Vsup)：	3.6 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	3 V
表面贴装：	YES	技术：	CMOS
温度等级：	OTHER	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	DUAL
类型：	NOR TYPE	宽度：	12 mm
Base Number Matches：	1

W19B320ATB 数据手册

W19B320AT/B

6. FUNCTIONAL DESCRIPTION

6.1 Device Bus Operation

6.1.1 Word/Byte Configuration

The #BYTE pin controls the device data I/O pins operate whether in the byte or word configuration.

When the #BYTE pin is ‘1’, the device is in word configuration; DQ0 -DQ15 are active and controlled

by #CE and #OE.

When the #BYTE pin is ‘0’, the device is in byte configuration, and only data I/O pins DQ0-DQ7 are active

and controlled by #CE and #OE. The data I/O pins DQ8-DQ14 are tri-stated, and the DQ15 pin is

used as an input for the LSB (A-1) address function.

6.1.2 Reading Array Data

To read array data from the outputs, the #CE and #OE pins must be set to V_IL. #CE is the power

control and used to select the device. #OE is the output control and gates array data to the output

pins. #WE should stay at V_IH. The #BYTE pin determines the device outputs array data whether in

words or bytes.

The internal state machine is set for reading array data when device power-up, or after hardware

reset. This ensures that no excess modification of the memory content occurs during the power

transition. In this mode there is no command necessary to obtain array data. Standard microprocessor

read cycles that assert valid addresses on the device address inputs produce valid data on the device

data outputs. Each bank remains enabled for read access until the command register contents are

changed.

6.1.3 Writing Commands/Command Sequences

In writhing a command or command sequence (which includes programming data to the device and

erasing sectors of memory), the system must drive #WE and #CE to V_IL, and #OE to V_IH.

For program operations, the #BYTE pin determines the device accepts program data whether in bytes

or in words. Refer to “Word/Byte Configuration” for more information.

The Unlock Bypass mode of device is to facilitate a faster programming. When a bank enters the

Unlock Bypass mode, only two write cycles are required to program a word or byte. Please refer to

"Word/Byte Configuration” section for details on programming data to the device using both standard

and Unlock Bypass command sequences.

The erase operation can erase a sector, multiple sectors, even the entire device. The device address

space is divided into four banks: Bank 1and Bank 4 contains the boot/parameter sectors; while Bank 2

and Bank 3 contain the larger sectors of uniform size. The “bank address” is the address bits required

to solely select a bank; while the “sector address” is the address bits required to solely select a sector.

Publication Release Date: December 27, 2005

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Revision A4

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与W19B320ATB相关器件

型号	品牌	描述	获取价格	数据表
W19B320ATB7H	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, LEAD FREE, TFBGA-48	获取价格
W19B320ATB7L	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, TFBGA-48	获取价格
W19B320ATB7M	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, LEAD FREE, TFBGA-48	获取价格
W19B320ATB8H	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, LEAD FREE, TFBGA-48	获取价格
W19B320ATB8L	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, TFBGA-48	获取价格
W19B320ATB8M	WINBOND	Flash, 2MX16, 70ns, PBGA48, 6 X 8 MM, 0.80 MM PITCH, LEAD FREE, TFBGA-48	获取价格

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