cym1720 Cypress Semiconductor Corporation., cym1720 Datasheet

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cym1720

Manufacturer Part Number
cym1720
Description
32k X 24 Static Ram Module
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Features
Functional Description
The CYM1720 is a high-performance 768-kilobit static RAM
module organized as 32K words by 24 bits. This module is
Selection Guide
Shaded area contains preliminary information.
Cypress Semiconductor Corporation
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
• High-density 768-kilobit SRAM module
• High-speed CMOS SRAMs
• 56-pin, 0.5-inch-high ZIP package
• Low active power
• SMD technology
• TTL-compatible inputs and outputs
• Commercial temperature range
• Small PCB footprint
Logic Block Diagram
— Access time of 15 ns
— 1.8W (max. for t
— 0.66 sq. in.
A
0
A
WE
OE
CS
14
AA
= 25 ns)
15
32K x 8
32K x 8
32K x 8
SRAM
SRAM
SRAM
3901 North First Street
1720-15
450
120
8
8
8
15
I/O
I/O
I/O
1720–1
16
0
8
constructed using three 32K x 8 static RAMs in SOJ packages
mounted onto an epoxy laminate board with pins.
Writing to the device is accomplished when the chip select
(CS) and write enable (WE) inputs are both LOW. Data on
the input/output pins (I/O
written into the memory location specified on the address
pins (A
Reading the device is accomplished by taking the chip select
(CS) and output enable (OE) LOW while write enable (WE)
remains HIGH. Under these conditions, the contents of the
memory location specified on the address pins will appear
on the input/output pins.
The input/output pins remain in a high-impedance state unless
the module is selected, outputs are enabled, and write enable
is HIGH.
I/O
I/O
1720-20
I/O
32K x 24 Static RAM Module
7
15
450
120
23
20
0
through A
San Jose
1720-25
14
330
25
60
).
September 1989 – Revised April 1993
0
Pin Configuration
through I/O
CA 95134
I/O
I/O
I/O
I/O
I/O
I/O
I/O
GND
GND
GND
V
I/O
I/O
I/O
I/O
I/O
V
A
A
NC
NC
NC
OE
1720-30
CC
CC
A
A
A
A
A
11
13
15
11
13
17
19
21
23
1
3
5
7
1
3
5
7
9
9
330
30
60
Top View
23
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
ZIP
) of the device is
CYM1720
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
1
3
5
7
9
408-943-2600
1720-35
1720–2
V
I/O
I/O
I/O
I/O
GND
A
A
A
A
CS
NC
I/O
I/O
I/O
I/O
GND
WE
A
A
A
A
GND
I/O
I/O
I/O
I/O
V
330
35
60
CC
CC
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
16
18
20
22

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cym1720 Summary of contents

Page 1

... AA • SMD technology • TTL-compatible inputs and outputs • Commercial temperature range • Small PCB footprint — 0.66 sq. in. Functional Description The CYM1720 is a high-performance 768-kilobit static RAM module organized as 32K words by 24 bits. This module is Logic Block Diagram ...

Page 2

... Test Conditions MHz 5.0V CC 481 5V 3.0V 255 GND 5 pF INCLUDING JIG AND 1720–3 SCOPE (b) 1.73V 2 CYM1720 Ambient Temperature +70 C CYM1720-15, 20 CYM1720-25, 30, 35 Min. Max. Min. Max. 2.4 2.4 0.4 0.4 2 –0.5 0.8 –0.5 0.8 –20 +20 –20 +20 –10 +10 –10 +10 450 330 ...

Page 3

... HZCS LZCS = part ( Test Loads and Waveforms. Transition is measured 500 mV from steady-state voltage CYM1720 1720-25 1720-30 1720-35 Min. Max. Min. Max. Min. Max ...

Page 4

... OHA DOE t LZOE 50% [6,10 SCS PWE t SD DATA VALID t HZWE . CYM1720 DATA VALID t HZOE t HZCS HIGH IMPEDANCE DATA VALID LZWE HIGH IMPEDANCE 1720–5 ICC ISB 1720–6 1720–7 ...

Page 5

... Data Out Read Word Data In Write Word High Z Deselect Ordering Information Speed Ordering Code 15 CYM1720PZ-15C 20 CYM1720PZ-20C 25 CYM1720PZ-25C 30 CYM1720PZ-30C 35 CYM1720PZ-35C Document #: 38-M-00021 SCS PWE t SD DATA VALID t HZWE Mode Package Package Name Type PZ05 56-Pin ZIP Module ...

Page 6

... Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 56-Pin ZIP Module PZ05 2.990 3.010 0.050 0.100 TYP TYP CYM1720 0.200 MAX 0.500 MAX 0.100 0.125 TYP 0.150 ...

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