- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371086 > MCM62Y308 (Motorola, Inc.) Synchronous Line Buffer:8K x 8 Bit Fast Static Dual Ported Memory PDF資料下載
參數(shù)資料
| 型號(hào)： | MCM62Y308 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Synchronous Line Buffer:8K x 8 Bit Fast Static Dual Ported Memory |
| 中文描述： | 同步線緩沖區(qū)器：8K × 8位快速靜態(tài)雙端口存儲(chǔ)器 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 257K |
| 代理商： | MCM62Y308 |
當(dāng)前第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
MCM62Y308
1
Motorola, Inc. 1994
Advance Information
Synchronous Line Buffer:
8K x 8 Bit Fast Static Dual
Ported Memory
With IEEE Standard 1149.1 Test Access Port
and Boundary–Scan (JTAG)
The MCM62Y308 is a synchronous, dual ported memory organized as 8,192
words of 8 bits each, fabricated using Motorola’s double–metal, double–poly,
0.65
μ
m CMOS process. It is intended for high speed video or other applications
which process data on a line–by–line basis. Through the use of a single clock and
port control inputs, separate read and write data ports provide simultaneous ac-
cess to a common memory array. Simultaneous read/write access to the same
address location is also allowed, with old data being read followed by a write of
the new data. This allows multiple devices to be cascaded with the output of one
directly driving the input of another. In this configuration the data stream can be
tapped at strategic interconnect points to perform various digital filtering functions.
Since there are no external address inputs, separate internal read and write
address counters are provided as a means of indexing the memory array. These
counters are preloaded and then selectively incremented or decremented by
asserting read enable (RE) and write enable (WE) inputs, allowing cycle to cycle
control. The address counters can be reloaded back to their initial values through the
use of the read reload (RR) and write reload (WR) control inputs. These inputs
initiate the transfer of address reload register values into the address counters which
index the memory array. When an address counter reaches 0000 it will roll over on
the next count. On the down count the roll over condition will cause the roll–over flag
(WRF or RRF) to assert high. On the up count these flags must be treated as don’t
cares. The roll–over flag outputs are cleared when their associated roll–over reset
pin is asserted low. The TDI input is used to write the reload registers using special
test access port instructions.
The read and write address counters are 16 bits long, and only 13 of the 16 bits
are required to index the 8K deep memory array. The remaining three bits are
used for depth expansion. These three bits are compared to the lower three bits
in the control register, and as long as they are equal that port (i.e., read or write)
will remain active. If the bits do not compare, the port will become inactive (i.e.,
for read outputs, high–z; for write inputs, disabled) however, the counter will
continue to count on the rising edge of K as long as the port enable signal (RE or
WE) is asserted. The TDI input is used to write the control register using special
test access port instructions.
The output enable Input can be programmed to be either synchronous or
asynchronous through the control register.
The MCM62Y308 is available in a 32 pin SOJ package.
8K x 8 Fast Access Static Memory Array
Single 5 V Power Supply — MCM62Y308–17:
±
5%
Synchronous, Simultaneous Read/Write Memory Access
50 MHz Maximum Clock Cycle Time, < 15 ns Read Access
Single Clock Operation
Separate Read/Write Address Counters with Reload Control
Separate Up/Down Counter Control for Both Read and Write
Separate Roll–Over Flag Outputs for Read and Write
Programmable Output Enable Control (Synchronous or Asynchronous)
Cascadable I/O Interface
IEEE Standard 1149.1 Test Port (JTAG)
Expand ID Register for Depth Expansion
High Board Density SOJ Package
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 2
5/95
Order this document
by MCM62Y308/D
SEMICONDUCTOR TECHNICAL DATA
MCM62Y308
J PACKAGE
300 MIL SOJ
CASE 857–02
PIN ASSIGNMENT
5
4
3
2
1
10
9
8
7
6
11
12
13
14
20
21
22
23
24
25
26
19
27
28
18
17
D1
D4
D5
D6
D7
WE
D0
D3
TCK
TDI
WR
D2
VDD
K
Q3
Q4
Q5
Q6
Q7
TDO
RR
RE
TMS
VSS
Q1
Q2
G
Q0
PIN NAMES
K
WE
WR
RE
RR
RRF
WRF
RRR
WRR
G
D0 – D7
Q0 – Q7
TCK
TMS
TDI
TDO
VDD
VSS
Clock Input
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
Write Address Reload Input
. . . . . . . . . .
. . . . . . . . . . . . . . . . .
Read Address Reload Input
. . . . . . . . .
Read Roll–Over Flag Output
. . . . . . . .
Write Roll–Over Flag Output
. . . . . . .
Read Roll–Over Reset Input
. . . . . . . .
Write Roll–Over Reset Input
. . . . . . .
. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
Write Enable Input
.Read Enable Input
Output Enable Input
Data Inputs
Data Outputs
Test Clock Input
Test Mode Select
Test Data Input
Test Data Output
+ 5 V Power Supply
Ground
32
1
15
16
29
30
31
32
WRR
RRR
RRF
WRF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCM62Y308J17 | Synchronous Line Buffer:8K x 8 Bit Fast Static Dual Ported Memory |
| MCM6323A | 64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323AYJ10 | 64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323AYJ10R | 64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323AYJ12 | 64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCM62Y308J17 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Synchronous Line Buffer:8K x 8 Bit Fast Static Dual Ported Memory |
| MCM6323A | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323ATS10 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323ATS10R | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
| MCM6323ATS12 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:64K x 16 Bit 3.3 V Asynchronous Fast Static RAM |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。