cym1946 Cypress Semiconductor Corporation., cym1946 Datasheet - Page 4

• Manufacturer Part Number: cym1946
• Description: 512k Static Module
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
Read Cycle No. 1
Write Cycle No. 1 (WE Controlled)
Read Cycle No. 2
Notes:
DATA OUT
7.
8.
9.
ADDRESS
DATA OUT
ADDRESS
DATA OUT
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
CS
OE
CC
[7,8]
[7,9]
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
t
LZCS
t
DATA UNDEFINED
SA
IL
[6]
t
, and OE= V
ACS
t
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
DATA VALID
t
LZWE
t
HA
t
HZOE
t
HZCS
t
PD
50%
IMPEDANCE
CYM1946
HIGH
1851–5
1851–7
1851–6
ICC
ISB