cym1840 Cypress Semiconductor Corporation., cym1840 Datasheet - Page 6

• Manufacturer Part Number: cym1840
• Description: 256k X 32 Static Ram Module
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
Truth Table
Ordering Informatio
Document #: 38-M-00040-B
Write Cycle No. 2 (CS Controlled)
Notes:
Speed
7.
8.
9.
DATA OUT
ADDRESS
20
25
30
35
45
55
CS
DATA IN
H
L
L
Device is continuously selected, CS = V
WE is HIGH for read cycle.
If CS goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
WE
CS
CYM1840PD-20C
CYM1840PD-25C
CYM1840PD-30C
CYM1840PD-35C
CYM1840PD-45C
CYM1840PD-55C
Ordering Code
WE
H
X
L
High Z
Data Out
Data In
n
(continued)
Input/Output
DATA UNDEFINED
[6,9]
IL
, ,
.
t
SA
Package
Name
PD06
PD06
PD06
PD06
PD06
PD06
Deselect/Power-Down
Read
Write
t
AW
60-Pin DIP Module
60-Pin DIP Module
60-Pin DIP Module
60-Pin DIP Module
60-Pin DIP Module
60-Pin DIP Module
t
WC
Package Type
6
Mode
t
HZWE
DATA VALID
t
PWE
t
t
SCS
SD
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Operating
HIGH IMPEDANCE
Range
t
HD
t
HA
CYM1840
1840–8