cym1840 Cypress Semiconductor Corporation., cym1840 Datasheet - Page 5

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

Switching Waveforms
Read Cycle No. 2
Write Cycle No. 1 (WE Controlled)
DATA OUT
ADDRESS
DATA OUT
CURRENT
DATA IN
SUPPLY
CS
WE
V
CS
CC
[7,8]
HIGH IMPEDANCE
t
(continued)
PU
t
LZCS
t
DATA UNDEFINED
SA
[6]
t
ACS
50%
t
SCS
t
AW
t
RC
t
WC
5
t
HZWE
DATA VALID
t
PWE
t
SD
DATA VALID
HIGH IMPEDANCE
t
HD
t
LZWE
t
HA
t
HZCS
t
PD
50%
IMPEDANCE
CYM1840
HIGH
1840–6
1840–7
ICC
ISB