參數資料
型號: MCM69R737A
廠商: Motorola, Inc.
英文描述: 4M-bit Synchronous Late Write Fast SRAM(4M位同步遲寫、快速靜態(tài)RAM)
中文描述: 4分位同步后寫入快速靜態(tài)存儲器(4分位同步遲寫,快速靜態(tài)內存)
文件頁數: 13/20頁
文件大小: 212K
代理商: MCM69R737A
MCM69R737A
MCM69R819A
13
MOTOROLA FAST SRAM
TAP AC OPERATING CONDITIONS AND CHARACTERISTICS
(0
°
C
TA
70
°
C, Unless Otherwise Noted)
Input Pulse Levels
Input Rise/Fall Time
Input Timing Measurement Reference Level
Output Timing Reference Level
0 to 3.0 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
1 V/ns (20% to 80%)
. . . . . . . . . . . . . . .
1.5 V
1.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . .
Output Test Load
50
Parallel Terminated T–line with 20 pF
Receiver Input Capacitance
. . . . . . . . . . . . . . .
. . . . . .
Test Load Termination Supply Voltage (VT)
1.5 V
TAP CONTROLLER TIMING
Parameter
Symbol
Min
Max
Unit
Notes
Cycle Time
tTHTH
tTHTL
tTLTH
tMVTH
tTHMX
tDVTH
tTHDX
tCS
tCH
tTLQX
tTLOV
100
ns
Clock High Time
40
ns
Clock Low Time
40
ns
TMS Setup
10
ns
TMS Hold
10
ns
TDI Valid to TCK High
10
ns
TCK High to TDI Don’t Care
10
ns
Capture Setup
10
ns
1
Capture Hold
10
ns
1
TCK Low to TDO Unknown
0
ns
TCK Low to TDO Valid
20
ns
NOTES:
1. tCS + tCH defines the minimum pause in RAM I/O pad transitions to assure accurate pad data capture.
AC TEST LOAD
DEVICE
UNDER
TEST
50
50
1.5 V
20 pF
tTHDX
tTLQV
tTLQX
tDVTH
tTLTH
tTHMX
tMVTH
TAP CONTROLLER TIMING DIAGRAM
tTHTH
TEST CLOCK
(TCK)
TEST MODE SELECT
(TMS)
TEST DATA IN
(TDI)
TEST DATA OUT
(TDO)
tTHTL
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