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MCM67B618AFN10 PDF预览

MCM67B618AFN10

更新时间: 2024-09-17 22:05:27
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 存储内存集成电路静态存储器信息通信管理
页数 文件大小 规格书
12页 159K
描述
64K x 18 Bit BurstRAM Synchronous Fast Static RAM

MCM67B618AFN10 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:LCC包装说明:QCCJ, LDCC52,.8SQ
针数:52Reach Compliance Code:unknown
ECCN代码:3A991.B.2.AHTS代码:8542.32.00.41
风险等级:5.63Is Samacsys:N
最长访问时间:10 ns其他特性:SELF-TIMED WRITE; BURST COUNTER; BYTE WRITE
I/O 类型:COMMONJESD-30 代码:S-PQCC-J52
JESD-609代码:e0长度:19.1262 mm
内存密度:1179648 bit内存集成电路类型:CACHE SRAM
内存宽度:18功能数量:1
端口数量:1端子数量:52
字数:65536 words字数代码:64000
工作模式:SYNCHRONOUS最高工作温度:70 °C
最低工作温度:组织:64KX18
输出特性:3-STATE可输出:YES
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装等效代码:LDCC52,.8SQ封装形状:SQUARE
封装形式:CHIP CARRIER并行/串行:PARALLEL
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
认证状态:Not Qualified座面最大高度:4.57 mm
最大待机电流:0.095 A最小待机电流:4.75 V
子类别:SRAMs最大压摆率:0.265 mA
最大供电电压 (Vsup):5.25 V最小供电电压 (Vsup):4.75 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:BICMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:19.1262 mm
Base Number Matches:1

MCM67B618AFN10 数据手册

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Order this document  
by MCM67B618A/D  
SEMICONDUCTOR TECHNICAL DATA  
MCM67B618A  
64K x 18 Bit BurstRAM  
Synchronous Fast Static RAM  
With Burst Counter and Self–Timed Write  
The MCM67B618A is a 1,179,648 bit synchronous fast static random access  
memory designed to provide a burstable, high–performance, secondary cache  
for the i486 and Pentium microprocessors. It is organized as 65,536 words  
of 18 bits. The device integrates input registers, a 2–bit counter, high speed  
SRAM, and high drive capability outputs onto a single monolithic circuit for re-  
duced parts count implementation of cache data RAM applications. Synchro-  
nous design allows precise cycle control with the use of an external clock (K).  
BiCMOS circuitry reduces the overall power consumption of the integrated func-  
tions for greater reliability.  
FN PACKAGE  
PLASTIC  
CASE 778–02  
PIN ASSIGNMENTS  
Addresses (A0 – A15), data inputs (D0 – D17), and all control signals  
except output enable (G) are clock (K) controlled through positive–edge–  
triggered noninverting registers.  
Bursts can be initiated with either address status processor (ADSP) or  
address status cache controller (ADSC) input pins. Subsequent burst  
addresses can be generated internally by the MCM67B618A (burst  
sequenceimitatesthatofthei486andPentium)andcontrolledbytheburst  
address advance (ADV) input pin. The following pages provide more de-  
tailed information on burst controls.  
7
6
5
4
3
2
1 52 51 50 49 48 47  
46  
8
9
DQ9  
DQ8  
DQ10  
DQ7  
DQ6  
45  
44  
43  
V
V
10  
CC  
SS  
11  
V
CC  
DQ11  
DQ12  
12  
13  
42  
41  
V
SS  
DQ5  
DQ4  
DQ3  
DQ2  
Write cycles are internally self–timed and are initiated by the rising edge  
of the clock (K) input. This feature eliminates complex off–chip write pulse  
generation and provides increased flexibility for incoming signals.  
Dual write enables (LW and UW) are provided to allow individually write-  
able bytes. LW controls DQ0 – DQ8 (the lower bits), while UW controls  
DQ9 – DQ17 (the upper bits).  
DQ13  
DQ14  
14  
15  
16  
17  
18  
19  
20  
40  
39  
38  
37  
36  
35  
34  
V
SS  
V
V
CC  
SS  
DQ15  
DQ16  
DQ17  
V
CC  
DQ1  
DQ0  
This device is ideally suited for systems that require wide data bus  
widths and cache memory. See Figure 2 for applications information.  
21 22 23 24 25 26 27 28 29 30 31 32 33  
Single 5 V ± 5% Power Supply  
Fast Access Times: 9/10/12 ns Max  
Byte Writeable via Dual Write Enables  
Internal Input Registers (Address, Data, Control)  
Internally Self–Timed Write Cycle  
ADSP, ADSC, and ADV Burst Control Pins  
Asynchronous Output Enable Controlled Three–State Outputs  
Common Data Inputs and Data Outputs  
3.3 V I/O Compatible  
PIN NAMES  
A0 – A15 . . . . . . . . . . . . . . . . Address Inputs  
K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Clock  
ADV . . . . . . . . . . . . Burst Address Advance  
LW . . . . . . . . . . . . Lower Byte Write Enable  
UW . . . . . . . . . . . . Upper Byte Write Enable  
ADSC . . . . . . . . . Controller Address Status  
ADSP . . . . . . . . . Processor Address Status  
E . . . . . . . . . . . . . . . . . . . . . . . . . Chip Enable  
G . . . . . . . . . . . . . . . . . . . . . . Output Enable  
DQ0 – DQ17 . . . . . . . . . . Data Input/Output  
High Board Density 52–Lead PLCC Package  
V
V
. . . . . . . . . . . . . . . . + 5 V Power Supply  
. . . . . . . . . . . . . . . . . . . . . . . . . . Ground  
CC  
SS  
NC . . . . . . . . . . . . . . . . . . . . . No Connection  
All power supply and ground pins must be  
connectedforproperoperationofthedevice.  
BurstRAM is a trademark of Motorola, Inc.  
i486 and Pentium are trademarks of Intel Corp.  
REV 2  
11/5/96  
Motorola, Inc. 1996  

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