cym1730 Cypress Semiconductor Corporation., cym1730 Datasheet - Page 3

• Manufacturer Part Number: cym1730
• Description: 64k X 24 Static Ram Module
• Manufacturer: Cypress Semiconductor Corporation.

AC Test Loads and Waveforms
Switching Characteristics
OUTPUT
Equivalent to:
READ CYCLE
t
t
t
t
t
t
t
t
t
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
Notes:
RC
AA
OHA
ACS
DOE
LZOE
HZOE
LZCS
HZCS
WC
SCS
AW
HA
SA
PWE
SD
HD
LZWE
HZWE
3.
4.
5.
6.
Parameter
INCLUDING
JIG AND
SCOPE
Test conditions assume signal transition time of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified
I
At any given temperature and voltage condition, t
t
The internal write time of the memory is defined by the overlap of CS LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can
terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the write.
OL
HZOE
5V
/I
OUTPUT
OH
100 pF
, t
HZCS
and 30-pF load capacitance.
, and t
(a)
[6]
Read Cycle Time
Address to Data Valid
Output Hold from Address Change
CS LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
OE HIGH to High Z
CS LOW to Low Z
CS HIGH to High Z
Write Cycle Time
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
Address Set-Up to Write Start
WE Pulse Width
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
WE LOW to High Z
481
THÉ VENIN EQUIVALENT
LZCE
are specified with C
167
1730-5
255
Description
Over the Operating Range
OUTPUT
[4]
[4, 5]
[5]
1.73V
L
INCLUDING
JIG AND
SCOPE
= 5 pF as in part (b) of AC Test Loads and Waveforms. Transition is measured 500 mV from steady-state voltage.
5V
HZCS
5 pF
is less than t
(b)
481
LZCS
1730-3
[3]
for any given device.
3
255
Min.
25
25
20
22
20
13
5
3
5
2
2
2
3
0
1730–25
GND
Max.
3.0V
25
25
12
10
10
10
< 5 ns
Min.
30
30
25
25
23
15
5
3
5
2
2
2
3
0
1730–30
10%
Max.
90%
30
30
15
15
15
10
ALL INPUT PULSES
Min.
35
35
30
30
25
20
5
3
5
2
2
2
5
0
1730–35
Max.
CYM1730
35
35
20
20
15
15
90%
10%
1730-4
Unit
< 5 ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns