emc646sp16ak Emlsi Inc., emc646sp16ak Datasheet - Page 63

• Manufacturer Part Number: emc646sp16ak
• Description: 4mx16 Bit Cellularram
• Manufacturer: Emlsi Inc.

Figure 52. Asynchronous WRITE Followed by Asynchronous READ
Note:
1. When configured for synchronous mode (BCR[15] = 0), CE# must remain HIGH for at least 5ns (t
interval. Otherwise, t
LB#/UB#
DQ[15:0]
IN/OUT
A[21:0]
ADV#
WAIT
CPH
WE#
OE#
CE#
is only required after CE#-controlled WRITEs.
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
IH
IL
OH
OL
IH
IL
High-Z
Valid Address
t
AVS
t
t
CVS
AS
t
VP
t
CW
t
WP
t
AVH
Data
t
DH
t
WPH
t
WC
t
AS
Valid Address
t
t
AW
BW
t
VS
t
Data
DW
t
WR
63
t
Note 1
CPH
V
V
CPH
OH
OL
) to schedule the appropriate refresh
t
BLZ
High-Z
t
LZ
t
AA
Valid Address
EMC646SP16AK
t
OLZ
Don’t Care
t
4Mx16 CellularRAM
OE
Valid Output
t
HZ
t
Undefined
BHZ
t
OHZ