LY625128 查看數據表（PDF） - Lyontek Inc.
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LY625128 Datasheet PDF : 18 Pages
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®
Rev. 2.2
LY625128
512K X 8 BIT LOW POWER CMOS SRAM
CAPACITANCE (TA = 25℃, f = 1.0MHz)
PARAMETER
SYMBOL
MIN.
Input Capacitance
CIN
-
Input/Output Capacitance
CI/O
-
Note : These parameters are guaranteed by device characterization, but not production tested.
MAX
6
8
UNIT
pF
pF
AC TEST CONDITIONS
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Reference Levels
Output Load
0.2V to VCC - 0.2V
3ns
1.5V
CL = 30pF + 1TTL, IOH/IOL = -2mA/4mA
AC ELECTRICAL CHARACTERISTICS
(1) READ CYCLE
PARAMETER
SYM.
Read Cycle Time
tRC
Address Access Time
tAA
Chip Enable Access Time
tACE
Output Enable Access Time
tOE
Chip Enable to Output in Low-Z tCLZ*
Output Enable to Output in Low-Z tOLZ*
Chip Disable to Output in High-Z tCHZ*
Output Disable to Output in High-Z tOHZ*
Output Hold from Address Change tOH
LY625128-45
MIN. MAX.
45
-
-
45
-
45
-
25
10
-
5
-
-
20
-
20
10
-
LY625128-55
MIN. MAX.
55
-
-
55
-
55
-
30
10
-
5
-
-
20
-
20
10
-
LY625128-70
MIN. MAX.
70
-
-
70
-
70
-
35
10
-
5
-
-
25
-
25
10
-
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
(2) WRITE CYCLE
PARAMETER
SYM. LY625128-45 LY625128-55
MIN. MAX. MIN. MAX.
Write Cycle Time
tWC
45
-
55
-
Address Valid to End of Write
tAW
40
-
50
-
Chip Enable to End of Write
tCW
40
-
50
-
Address Set-up Time
tAS
0
-
0
-
Write Pulse Width
tWP
35
-
45
-
Write Recovery Time
tWR
0
-
0
-
Data to Write Time Overlap
tDW
20
-
25
-
Data Hold from End of Write Time tDH
0
-
0
-
Output Active from End of Write tOW*
5
-
5
-
Write to Output in High-Z
tWHZ*
-
20
-
20
*These parameters are guaranteed by device characterization, but not production tested.
LY625128-70
MIN. MAX.
70
-
60
-
60
-
0
-
55
-
0
-
30
-
0
-
5
-
-
25
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, Industry E. Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan.
TEL: 886-3-6668838
FAX: 886-3-6668836
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