HANBit
HMS12864F8V
SRAM MODULE 1MByte (128K x 64 bit), 120-Pin SMM, 3.3V
Part No. HMS12864F8V
GENERAL DESCRIPTION
The HMS12864F8V is a high-speed static random access memory (SRAM) module containing 131,072 words organized in
a x 64-bit configuration. The module consists of four 128K x 8 SRAMs mounted on a 120-pin, both-sided, FR4-printed circuit
board.
Byte write enable inputs,(/WE0,/WE1,/WE2,/WE3,/WE4,/WE5,/WE6,/WE7) are used to enable the module’s 8 bits
independently. Output enable(/OE) and write enable(/WE) can set the memory input and output.
Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW.
accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.
For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from
a single +3.3V DC power supply and all inputs and outputs are fully TTL-compatible.
Reading is
PIN ASSIGNMENT
P1
P2
Symbol
Vss
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
Vss
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
DQ9
DQ8
Vss
A0
A1
A2
A3
A4
Vss
A5
A6
A7
/CE
Vss
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
Vcc
DQ24
DQ25
DQ26
DQ27
DQ28
DQ29
DQ30
DQ31
Vcc
DQ16
DQ17
DQ18
DQ19
DQ20
DQ21
DQ22
DQ23
Vcc
A16
A15
A14
A13
A12
Vcc
A11
A10
A9
A8
Vcc
PIN
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
Symbol
Vss
DQ63
DQ62
DQ61
DQ60
DQ59
DQ58
DQ57
DQ56
Vss
DQ55
DQ54
DQ53
DQ52
DQ51
DQ50
DQ49
DQ48
Vss
NC
NC
/OE
NC
NC
Vss
NC
NC
NC
NC
Vss
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
FEATURES
w
Access times : 12, 15 and 20ns
w
High-density 1MByte design
w
High-reliability, high-speed design
w
Single + 3.3V
±0.3V
power supply
w
Easy memory expansion with /CE and
/OE functions
w
All inputs and outputs are TTL-compatible
w
Industry-standard pin-out
w
FR4-PCB design
OPTIONS
w
Timing
8ns access
10ns access
12ns access
15ns access
20ns access
w
Packages
120-pin SMM
F
- 8
-10
-12
-15
-20
MARKING
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
Vcc
DQ32
DQ33
DQ34
DQ35
DQ36
DQ37
DQ38
DQ39
Vcc
DQ40
DQ41
DQ42
DQ43
DQ44
DQ45
DQ46
DQ47
Vcc
/WE0
/WE1
/WE2
/WE3
/WE4
Vcc
/WE5
/WE6
/WE7
NC
Vcc
PIN
7
HANBit Electronics Co.,Ltd.
HANBIT [ HANBIT ELECTRONICS CO.,LTD ]
