emc643sp16ak Emlsi Inc., emc643sp16ak Datasheet - Page 48

• Manufacturer Part Number: emc643sp16ak
• Description: 4mx16 Bit Cellularram Ad-mux
• Manufacturer: Emlsi Inc.

Figure 35: Burst WRITE Followed by Burst READ
Note:
1. Nondefault BCR settings for burst WRITE followed by burst READ: fixed or variable latency, latency code 2 (3 clocks), WAIT active LOW,
2. A refresh opportunity must be provided every
WAIT asserted during delay.
HIGH, or b) CE# HIGH for longer than 15ns.
A/DQ[15:0]
UB#/LB#
A[21:16]
WAIT
ADV#
WE#
CLK
CE#
OE#
V
V
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
IH
IL
IH
IL
OH
OL
High-Z
t
t
t
Address
SP
t
t
SP
SP
Address
CSP
SP
Valid
Valid
t
t
t
t
HD
HD
HD
HD
t
CLK
t
CEM. A refresh opportunity is satisfied by either of the following two conditions: a) clocked CE#
t
SP
t
SP
D0
t
HD
t
HD
D1
D2
48
D3
t
HD
t
Note 2
CBPH
t
Address
t
Address
t
SP
SP
t
SP
SP
Valid
Valid
t
t
t
t
t
HD
CSP
HD
HD
HD
V
V
t
t
OH
OL
BOE
ACLK
4Mx16 CellularRAM AD-MUX
Output
Valid
Don’t Care
EMC643SP16AK
t
KOH
Output
Valid
Output
Valid
Output
Valid
Undefined
High-Z
t
OHZ