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AT34C02C

更新时间： 2024-01-26 06:21:00
品牌 Logo 应用领域
爱特美尔 - ATMEL 可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数 文件大小 规格书
20页 370K
描述
Two-wire Serial EEPROM with Permanent and Reversible Software Write Protect

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AT34C02C 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：4.40 MM, GREEN, PLASTIC, MO-153AA, TSSOP-8
Reach Compliance Code：compliantFactory Lead Time：7 weeks
风险等级：1.53最大时钟频率 (fCLK)：0.4 MHz
JESD-30 代码：R-PDSO-G8JESD-609代码：e4
长度：4.4 mm内存密度：2048 bit
内存集成电路类型：EEPROM内存宽度：8
湿度敏感等级：1功能数量：1
端子数量：8字数：256 words
字数代码：256工作模式：SYNCHRONOUS
最高工作温度：85 °C最低工作温度：-40 °C
组织：256X8封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH并行/串行：SERIAL
峰值回流温度（摄氏度）：260座面最大高度：1.2 mm
串行总线类型：I2C最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：1.7 V标称供电电压 (Vsup)：3 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：3 mm最长写入周期时间 (tWC)：5 ms
Base Number Matches：1

AT34C02C 数据手册

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Features  
• Permanent and Reversible Software Write Protection for the First-half of the Array  
– Software Procedure to Verify Write Protect Status  
• Hardware Write Protection for the Entire Array  
• Low-voltage and Standard-voltage Operation  
– 1.7 (VCC = 1.7V to 3.6V)  
• Internally Organized 256 x 8  
• Two-wire Serial Interface  
• Schmitt Trigger, Filtered Inputs for Noise Suppression  
• Bidirectional Data Transfer Protocol  
• 100 kHz (1.7V) and 400 kHz (2.7V and 3.6V) Compatibility  
• 16-byte Page Write Modes  
• Partial Page Writes Are Allowed  
• Self-timed Write Cycle (5 ms max)  
Two-wire Serial  
EEPROM  
• High-reliability  
with Permanent  
and Reversible  
Software Write  
Protect  
– Endurance: 1 Million Write Cycles  
– Data Retention: 100 Years  
• 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead TSSOP, and 8-ball  
dBGA2 Packages  
Description  
The AT34C02C provides 2048 bits of serial electrically-erasable and programmable  
read only memory (EEPROM) organized as 256 words of 8 bits each. The first-half of  
the device incorporates a permanent and a reversible software write protection feature  
while hardware write protection for the entire array is available via an external pin.  
Once the permanent software write protection is enabled, by sending a special com-  
mand to the device, it cannot be reversed. However, the reversible software write  
protection is enabled and can be reversed by sending a special command. The hard-  
ware write protection is controlled with the WP pin and can be used to protect the  
entire array, whether or not the software write protection has been enabled. This  
allows the user to protect none, first-half, or all of the array depending on the applica-  
tion. The device is optimized for use in many industrial and commercial applications  
where low-power and low-voltage operations are essential. The AT34C02C is avail-  
able in space saving 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead  
TSSOP, and 8-ball dBGA2 packages and is accessed via a Two-wire serial interface.  
It is available in 1.7V (1.7V to 3.6V).  
2K (256 x 8)  
AT34C02C  
Preliminary  
8-ball dBGA2  
8-lead Ultra Thin Mini-MAP  
Table 1. Pin Configurations  
Pin Name  
A0 - A2  
SDA  
Function  
8
7
6
5
1
2
3
4
1
2
3
4
VCC  
WP  
8
7
6
5
A0  
A1  
A0  
VCC  
WP  
A1  
Address Inputs  
Serial Data  
SCL  
SDA  
A2  
GND  
A2  
SCL  
SDA  
GND  
SCL  
Serial Clock Input  
Write Protect  
(MLP 2x3)  
Bottom View  
WP  
Bottom View  
8-lead SOIC  
8-lead TSSOP  
A0  
A1  
1
2
3
4
8
VCC  
A0  
A1  
A2  
1
2
3
4
8
7
6
5
VCC  
WP  
7
6
5
WP  
A2  
SCL  
SDA  
SCL  
SDA  
GND  
GND  
Rev. 5185A–SEEPR–9/06  
1234567...20

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