CAT24C44 Catalyst Semiconductor, CAT24C44 Datasheet - Page 4

• Manufacturer Part Number: CAT24C44
• Description: 256-Bit Serial Nonvolatile CMOS Static RAM
• Manufacturer: Catalyst Semiconductor

A.C. CHARACTERISTICS, Recall Cycle
V
A.C. CHARACTERISTICS, Store Cycle
V
A.C. CHARACTERISTICS
V
INSTRUCTION SET
Doc. No. 25019-0A 2/98 N-1
CC
CC
CC
X = Don’t care
A = Address bit
Symbol
Symbol
Symbol
Instruction
t
t
t
t
F
t
t
t
t
t
t
t
t
t
t
t
t
t
ORC
SKH
SKL
DS
DH
PD
Z
CES
CEH
CDS
RCC
RCP
RCZ
ARC
ST
STP
STZ
= 5V 10%, unless otherwise specified.
= 5V 10%, unless otherwise specified.
= 5V 10%, unless otherwise specified.
SK
WRDS
STO
WRITE
WREN
RCL
READ
Recall Cycle Time
Recall Pulse Width
Recall Disable Time
Recall Enable Time
Recall Data Access Time
SK Frequency
SK Positive Pulse Width
SK Negative Pulse Width
Data Setup Time
Data Hold Time
SK Data Valid Time
CE Disable Time
CE Enable Setup Time
CE Enable Hold Time
CE De-Select Time
Store Time
Store Pulse Width
Store Disable Time
Start Bit
Parameter
Parameter
Parameter
1
1
1
1
1
1
Address
Format
XXXX
XXXX
AAAA
XXXX
XXXX
AAAA
OP Code
1 1 X
0 0 0
0 0 1
0 1 1
1 0 0
1 0 1
Min.
Min.
Min.
500
200
2.5
400
400
400
800
400
800
DC
10
80
Limits
4
Reset Write Enable Latch (Disables, Writes and Stores)
Store RAM Data in E
Write Data into RAM Address AAAA
Set Write Enable Latch (Enables, Writes and Stores)
Recall E
Read Data From RAM Address AAAA
Max.
Max.
500
100
1.5
Max.
10
375
1
1
2
PROM Data into RAM
Units
Units
Units
ms
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
s
s
2
Operation
PROM
C
V
V
Input rise and fall times = 10ns
OH
IH
L
C
V
V
C
V
V
= 100pF + 1TTL gate
= 2.2V, V
OH
IH
OH
IH
L
= 2.2V, V
L
= 100pF + 1TTL gate
= 100pF + 1TTL gate
= 2.2V, V
= 2.2V, V
= 2.2V, V
= 2.2V, V
Conditions
Conditions
Conditions
IL
OL
= 0.65V
IL
IL
= 0.65V
OL
OL
= 0.65V
= 0.65V
= 0.65V
= 0.65V