Ordering number : EN4430C
CMOS LSI
LC33832P, S, M, PL, SL, ML-70/80/10
256 K (32768 words
×
8 bits) Pseudo-SRAM
Overview
The LC33832 series is composed of pseudo static RAM
that operates on a single 5 V power supply and is
organized as 32768 words
×
8 bits. By using memory
cells each composed of a single transistor and capacitor,
together with peripheral CMOS circuitry, this series
achieves ease of use with high density, high speed, and
low power dissipation. The LC33832 series can easily
accomplish auto-refresh and self-refresh by means of
OE/RFSH input. As with asynchronous static RAM, WE
input uses a system for incorporating input data at the WE
rise, thereby facilitating interfacing with a microcomputer.
The LC33832 series features pin compatibility with 256 K
static RAM (the LC36256A series), and available
packages are the standard 28-pin DIP with widths of 600
mil or 300 mil, and the SOP with a width of 450 mil.
CE-only refresh can be accomplished by selecting address
256 (A0 to A7) within 4 ms.
Package Dimensions
unit: mm
3012A-DIP28
[LC33832P, PL]
SANYO: DIP28
Features
•
•
•
•
•
•
•
•
32768 words
×
8 bits configuration
Single 5 V ±10% power supply
All input and output (I/O) TTL compatible
Fast access times and low power dissipation
4 ms refresh using 256 refresh cycle
CE-only refresh, auto-refresh, and self-refresh
Low-power version: 100 µA self-refresh current
Package
DIP28-pin (600 mil) plastic package: LC33832P, PL
DIP28-pin (300 mil) plastic package: LC33832S, SL
SOP28-pin (450 mil) plastic package: LC33832M, ML
unit: mm
3133-DIP28
[LC33832S, SL]
SANYO: DIP28
• CE access time/OE access time/Cycle time/Current drain
Parameter
CE access time
OE access time
Cycle time
Current drain
Operating
Standby
LC33832P, S, M, PL, SL, ML
-70
70 ns
30 ns
115 ns
65 mA
-80
80 ns
35 ns
130 ns
60 mA
1 mA/100 µA (L version)
-10
100 ns
40 ns
160 ns
50 mA
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22897HA (OT)/52595TH (OT)/N1993JN/40893JN A8-9957, 58, 59, No. 4430-1/9
LC33832P, S, M, PL, SL, ML-70/80/10
unit : mm
3158-SOP28
[LC33832M, ML]
SANYO: SOP28
Block Diagram
No. 4430-2/9
LC33832P, S, M, PL, SL, ML-70/80/10
Pin Assignment
Pin Functions
A0 to A14
WE
OE/RFSH
CE
I/O1 to I/O8
V
CC
GND
Address input
Read/Write input
Output-enable input/ refresh input
Chip-enable input
Data input/output
Power supply
Ground
Functional Logic
CE
H
L
L
L
H
H
OE
/RFSH
H
L
H
H
L
NP
WE
X
H
L
H
X
X
A0 to A7
X
VX
VX
VX
X
X
A8 to
A14
X
VX
VX
X
X
X
I/O1
to I/O8
HZ
OUT
IN
HZ
HZ
HZ
State
Standby
Read
Write
CE-only refresh
Self-refresh
Auto-refresh
H
...................High-level input of V
IN
= 6.5 V to V
IH
(min)
L
....................Low-level input of V
IN
= V
IL
(max) to –1.0 V
X....................High-
or low-level input
NP.................Negative-polarity
pulse input
VX.................“IN”
when CE = L is confirmed, then “X”
HZ.................High
impedance
IN
..................Input state
OUT..............Output
state
No. 4430-3/9
LC33832P, S, M, PL, SL, ML-70/80/10
Specifications
Absolute Maximum Ratings
Parameter
Maximum supply voltage
Input voltage
Output voltage
Allowable power dissipation
Output short-circuit current
Operating temperature
Storage temperature
Symbol
V
CC
max
V
IN
V
OUT
Pd max
I
OUT
Topr
Tstg
Ratings
–1.0 to +7.0
–1.0 to +7.0
–1.0 to +7.0
600
50
0 to +70
–55 to +150
Unit
V
V
V
mW
mA
°C
°C
Note
1
1
1
1
1
1
1
Note: 1) Stresses greater than the above listed maximum values may result in damage to the device.
DC Recommended Operating Ranges
at Ta = 0 to +70°C
Parameter
Supply voltage
Input high level voltage
Input low level voltage
Symbol
V
CC
V
IH
V
IL
min
4.5
2.4
–1.0
typ
5.0
max
5.5
6.5
+0.8
Unit
V
V
V
Note
2
2
2
Note: 2) All voltages are referenced to GND.
DC Electrical Characteristics
at Ta = 0 to +70°C, V
CC
= 5V±10%
Parameter
Symbol
Conditions
70ns
Operating current
I
CCA
I
CCS1
I
CCS2
I
CCSR
I
IL
I
OL
V
OH
V
OL
Average current during operation
Access
time
80ns
100ns
min
max
65
60
50
1
LC33832P, S, M
LC33832PL, SL, ML
LC33832P, S, M
LC33832PL, SL, ML
–10
+10
–10
2.4
0.4
1
1
mA
100
mA
100
µA
+10
µA
V
V
µA
µA
mA
mA
3,4
Unit Note
Standby current 1
Standby current 2
CE = OE/RFSH = V
IH
CE = OE/RFSH = V
CC
–0.2V
CE = V
CC
–0.2V, OE/RFSH = 0.2V
Self-refresh current
Input leakage current
Output leakage current
Output high level voltage
Output low level voltage
0V≤V
IN
≤V
CC
, pins other than test pin = 0V
D
OUT
disable, 0V≤V
OUT
≤V
CC
I
OUT
= –5mA
I
OUT
= 4.2mA
Note: 3) All current values are measured at minimal cycle rate. Since current flows immoderately, cycle times may become longer
and shorter than shown here.
4) Dependent on output load. Maximum value is value during free state.
Input/Output Capacitance Characteristics
at Ta = 25°C, f = 1MHz, V
CC
= 5V±10%
Parameter
Input capacitance (A0 to A14)
Symbol
C
IN1
C
I/O
min
max
5
7
10
Unit
pF
pF
pF
Test conditions
V
IN1
= 0 V
V
IN2
= 0 V
V
I/O
= 0 V
Input capacitance (CE, OE/RFSH, WE) C
IN2
Input/output capacitance
Sampling inspections, and not full-lot inspections, are carried out for these parameters.
No. 4430-4/9
LC33832P, S, M, PL, SL, ML-70/80/10
AC Electrical Characteristics
at Ta = 0 to +70°C, V
CC
5V±10% (Notes 5, 6, 7, 8, 9)
LC33832P, S, M, PL, SL, ML
Parameter
Symbol
min
Random read,
write cycle time
Read-write cycle time
CE pulse width
CE precharge time
CE access time
OE access time
CE output enable time
OE output enable time
WE output enable time
CE output disable time
OE output disable time
WE output disable time
OE hold time for CE
OE setup time for CE
Read command setup time
Read command hold time
Write pulse width
Write command hold time
Write command lead time
Input data setup time for WE
Input data setup time for CE
Input data hold time for WE
Input data hold time for CE
Address setup time for CE
Address hold time for CE
Auto-refresh cycle time
RFSH delay time for CE
RFSH pulse width (auto-refresh)
RFSH precharge time
(auto-refresh)
RFSH active CE delay time
(auto-refresh)
RFSH pulse width (self-refresh)
RFSH precharge CE delay time
(self-refresh)
Refresh time
Rise and fall time
t
RC
t
RMW
t
CE
t
P
t
CEA
t
OEA
t
CLZ
t
OLZ
t
WLZ
t
CHZ
t
OHZ
t
WHZ
t
OHC
t
OSC
t
RCS
t
RCH
t
WP
t
WCH
t
CWL
t
DSW
t
DSC
t
DHW
t
DHC
t
ASC
t
AHC
t
FC
t
RFD
t
FAP
t
FP
t
FCE
t
FAS
t
FRS
t
REF
t
T
3
10
0
0
0
0
0
0
10
0
0
55
55
55
30
30
0
0
0
15
115
35
75
30
135
8000
135
4
50
3
8000
20
20
20
115
165
70 10000
35
70
30
10
0
0
0
0
0
0
10
0
0
60
60
60
35
35
0
0
0
20
130
40
80
30
160
8000
160
4
50
3
8000
25
25
25
-70
max
min
130
195
80 10000
40
80
35
10
0
0
0
0
0
0
10
0
0
70
70
70
40
40
0
0
0
25
160
50
80
30
190
8000
190
4
50
8000
30
30
30
-80
max
min
160
240
100 10000
50
100
40
-10
max
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
13
13
13
13
13
11
11
11
11
12
12
10
10
10
Unit
Note
Continued on next page.
No. 4430-5/9
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