cym1730 Cypress Semiconductor Corporation., cym1730 Datasheet - Page 4

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

Switching Waveforms
Read Cycle No. 1
Read Cycle No. 2
Write Cycle No. 1 (WE Controlled)
Notes:
10. Data I/O will be high impedance if OE = V
DATA OUT
7.
8.
9.
DATA OUT
ADDRESS
DATA OUT
ADDRESS
CURRENT
DATA IN
SUPPLY
WE is HIGH for read cycle.
Device is continuously selected, CS = V
Address valid prior to or coincident with CS transition LOW.
WE
CS
V
OE
CS
CC
[7, 8]
[7, 9]
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
t
LZCS
t
DATA UNDEFINED
SA
[6, 10]
IL
t
ACS
t
IH
and OE= V
LZOE
.
t
OHA
t
DOE
50%
IL
.
t
AA
t
SCS
t
AW
t
RC
t
WC
4
t
RC
t
HZWE
DATA VALID
t
PWE
t
SD
DATA VALID
HIGH IMPEDANCE
t
HD
t
DATA VALID
LZWE
t
HA
t
HZOE
t
HZCS
t
PD
50%
IMPEDANCE
CYM1730
HIGH
1730-6
1730-7
1730-8
ICC
ISB