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28C64AF-20/SO PDF预览

28C64AF-20/SO

更新时间: 2024-11-13 03:55:55
品牌 Logo 应用领域
美国微芯 - MICROCHIP 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
10页 132K
描述
64K (8K x 8) CMOS EEPROM

28C64AF-20/SO 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP28,.4
针数:28Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.32.00.51
风险等级:5.69最长访问时间:200 ns
其他特性:AUTOMATIC WRITE; BULK ERASE; DATA RETENTION > 10 YEARS命令用户界面:NO
数据轮询:YES数据保留时间-最小值:10
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
内存密度:65536 bit内存集成电路类型:EEPROM
内存宽度:8功能数量:1
端子数量:28字数:8192 words
字数代码:8000工作模式:ASYNCHRONOUS
最高工作温度:70 °C最低工作温度:
组织:8KX8输出特性:3-STATE
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE并行/串行:PARALLEL
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
编程电压:5 V认证状态:Not Qualified
就绪/忙碌:YES最大待机电流:0.0001 A
子类别:EEPROMs最大压摆率:0.03 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED切换位:NO
最长写入周期时间 (tWC):0.2 msBase Number Matches:1

28C64AF-20/SO 数据手册

 浏览型号28C64AF-20/SO的Datasheet PDF文件第2页浏览型号28C64AF-20/SO的Datasheet PDF文件第3页浏览型号28C64AF-20/SO的Datasheet PDF文件第4页浏览型号28C64AF-20/SO的Datasheet PDF文件第5页浏览型号28C64AF-20/SO的Datasheet PDF文件第6页浏览型号28C64AF-20/SO的Datasheet PDF文件第7页 
Obsolete Device  
28C64A  
64K (8K x 8) CMOS EEPROM  
FEATURES  
PACKAGE TYPES  
• Fast Read Access Time—150 ns  
• CMOS Technology for Low Power Dissipation  
- 30 mA Active  
RDY/BSY  
A12  
A7  
• 1  
2
28 Vcc  
27 WE  
26 NC  
25 A8  
3
A6  
4
- 100 µA Standby  
A6  
A5  
A4  
A3  
A2  
A1 10  
A0 11  
NC 12  
I/O0 13  
5
6
7
8
9
29 A8  
28 A9  
A5  
5
24 A9  
• Fast Byte Write Time—200 µs or 1 ms  
• Data Retention >200 years  
• High Endurance - Minimum 100,000 Erase/Write  
Cycles  
• Automatic Write Operation  
- Internal Control Timer  
A4  
6
23 A11  
22 OE  
21 A10  
20 CE  
19 I/O7  
18 I/O6  
17 I/O5  
16 I/O4  
15 I/O3  
27 A11  
26 NC  
25 OE  
24 A10  
23 CE  
22 I/O7  
21 I/O6  
A3  
7
A2  
8
A1  
9
A0  
10  
11  
12  
13  
I/O0  
I/O1  
I/O2  
VSS 14  
- Auto-Clear Before Write Operation  
- On-Chip Address and Data Latches  
• Data Polling  
• Pin 1 indicator on PLCC on top of package  
• Ready/Busy  
• Chip Clear Operation  
• Enhanced Data Protection  
- VCC Detector  
BLOCK DIAGRAM  
I/O0  
I/O7  
- Pulse Filter  
- Write Inhibit  
VSS  
Data Protection  
VCC  
Circuitry  
Chip Enable/  
Output Enable  
Control Logic  
CE  
• Electronic Signature for Device Identification  
• 5-Volt-Only Operation  
• Organized 8Kx8 JEDEC Standard Pinout  
- 28-pin Dual-In-Line Package  
- 32-pin PLCC Package  
OE  
WE  
Input/Output  
Buffers  
Auto Erase/Write  
Timing  
Data  
Poll  
Rdy/  
Busy  
Program Voltage  
Generation  
A0  
- 28-pin SOIC Package  
Y
Y Gating  
Decoder  
L
• Available for Extended Temperature Ranges:  
- Commercial: 0°C to +70°C  
a
t
c
h
e
s
16K bit  
Cell Matrix  
- Industrial:  
-40°C to +85°C  
X
Decoder  
DESCRIPTION  
A12  
The Microchip Technology Inc. 28C64A is a CMOS 64K non-  
volatile electrically Erasable PROM. The 28C64A is  
accessed like a static RAM for the read or write cycles with-  
out the need of external components. During a “byte write”,  
the address and data are latched internally, freeing the micro-  
processor address and data bus for other operations. Fol-  
lowing the initiation of write cycle, the device will go to a busy  
state and automatically clear and write the latched data using  
an internal control timer. To determine when the write cycle  
is complete, the user has a choice of monitoring the Ready/  
Busy output or using Data polling. The Ready/Busy pin is an  
open drain output, which allows easy configuration in wired-  
or systems. Alternatively, Data polling allows the user to read  
the location last written to when the write operation is com-  
plete. CMOS design and processing enables this part to be  
used in systems where reduced power consumption and reli-  
ability are required. A complete family of packages is offered  
to provide the utmost flexibility in applications.  
2004 Microchip Technology Inc.  
DS11109K-page 1  

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