Datasheet > AT27BV256-70JU-T

AT27BV256-70JU-T

更新时间： 2024-01-01 19:51:18

品牌	Logo	应用领域
美国微芯 - MICROCHIP		OTP只读存储器内存集成电路
页数	文件大小	规格书
12页	768K
描述
IC OTP 256KBIT 70NS 32PLCC

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技术参数
数据手册

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AT27BV256-70JU-T 技术参数

生命周期：	Active	包装说明：	LCC-32
Reach Compliance Code：	compliant	风险等级：	0.99
最长访问时间：	70 ns	其他特性：	ALSO OPERATES AT 5V SUPPLY
JESD-30 代码：	R-PQCC-J32	长度：	13.97 mm
内存密度：	262144 bit	内存集成电路类型：	OTP ROM
内存宽度：	8	功能数量：	1
端子数量：	32	字数：	32768 words
字数代码：	32000	工作模式：	ASYNCHRONOUS
最高工作温度：	85 °C	最低工作温度：	-40 °C
组织：	32KX8	封装主体材料：	PLASTIC/EPOXY
封装代码：	QCCJ	封装形状：	RECTANGULAR
封装形式：	CHIP CARRIER	并行/串行：	PARALLEL
座面最大高度：	3.556 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：	INDUSTRIAL	端子形式：	J BEND
端子节距：	1.27 mm	端子位置：	QUAD
宽度：	11.43 mm

AT27BV256-70JU-T 数据手册

This feature is used by industry-standard programming equipment to select the proper programming algorithms and

voltages. The AT27BV256 programs in exactly the same way as a standard, 5V Atmel AT27C256R, and uses the same

programming equipment.

Pin configurations

32-lead PLCC

Top view

Pin name

A0 - A14

O0 - O7

Function

Addresses

Outputs

29 A8

28 A9

27 A11

26 NC

25 OE

24 A10

23 CE

22 O7

21 O6

Chip enable

Output enable

No connect

A1 10

A0 11

NC 12

O0 13

Note:

PLCC package pins 1 and 17 are “don’t connect.”

System considerations

Switching between active and standby conditions via the chip enable pin may produce transient voltage excursions. Unless

accommodated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance.

At a minimum, a 0.1µF, high-frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This

capacitor should be connected between the V_CCand ground terminals of the device, as close to the device as possible.

Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7µF bulk electrolytic

capacitor should be utilized, again connected between the V_CCand ground terminals. This capacitor should be positioned as

close as possible to the point where the power supply is connected to the array.

Figure 3-1.

Block diagram

Atmel AT27BV256

0601F–EPROM–4/11

123 4 5 6 7...12

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