ESMT
SDRAM
M12L64322A
Operation temperature condition -40
°
C ~ 85
°
C
512K x 32 Bit x 4 Banks
Synchronous DRAM
FEATURES
JEDEC standard 3.3V power supply
LVTTL compatible with multiplexed address
Four banks operation
MRS cycle with address key programs
- CAS Latency ( 2 & 3 )
- Burst Length ( 1, 2, 4, 8 & full page )
- Burst Type ( Sequential & Interleave )
All inputs are sampled at the positive going edge of the
system clock
DQM for masking
Auto & self refresh
15.6μs refresh interval
ORDERING INFORMATION
Product No.
M12L64322A-6TIG
M12L64322A-6BIG
MAX FREQ. PACKAGE COMMENTS
166MHz
166MHz
TSOPII
90BGA
Pb-free
Pb-free
GENERAL DESCRIPTION
The M12L64322A is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 x 524,288 words by 32 bits.
Synchronous design allows precise cycle control with the use of system clock I/O transactions are possible on every clock cycle.
Range of operating frequencies, programmable burst length and programmable latencies allow the same device to be useful for a
variety of high bandwidth, high performance memory system applications.
PIN ARRANGEMENT
Top View
V
DD
DQ0
V
DD Q
DQ1
DQ2
V
SSQ
DQ3
DQ4
V
DD Q
DQ5
DQ6
V
S S Q
DQ7
NC
V
DD
DQ M 0
WE
CA S
RA S
CS
NC
BA0
BA1
A10/AP
A0
A1
A2
D QM 2
V
DD
NC
DQ 16
V
SS Q
DQ 17
DQ 18
V
DD Q
DQ 19
DQ 20
V
SS Q
DQ 21
DQ 22
V
DD Q
DQ 23
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
V
S S
DQ1 5
V
SSQ
DQ1 4
DQ1 3
V
DD Q
DQ1 2
DQ1 1
V
SSQ
DQ 10
DQ9
V
DD Q
DQ8
NC
V
S S
DQ M 1
NC
NC
CL K
CK E
A9
A8
A7
A6
A5
A4
A3
DQ M 3
V
S S
NC
DQ3 1
V
DD Q
DQ3 0
DQ2 9
V
SSQ
DQ2 8
DQ2 7
V
DD Q
DQ2 6
DQ2 5
V
SSQ
DQ2 4
V
S S
8 6 Pin TSOP ( II )
(400mil x 875mil)
( 0 .5 m m P in pit ch )
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2007
Revision
:
1.2
1/46
ESMT
PIN ARRANGEMENT
90 Ball FBGA
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
2
3
4
5
6
7
8
9
M12L64322A
Operation temperature condition -40
°
C ~ 85
°
C
DQ26 DQ24 VSS
DQ28 VDDQ VSSQ
VSSQ DQ27 DQ25
VSSQ DQ29 DQ30
VDDQ DQ31
VSS DQM3
A4
A7
CLK
DQM1
A5
A8
CKE
NC
NC
A3
A6
NC
A9
NC
VSS
VDD DQ23 DQ21
VDDQ VSSQ DQ19
DQ22 DQ20 VDDQ
DQ17 DQ18 VDDQ
NC
A2
A10
NC
BA0
CAS
VDD
DQ6
DQ1
DQ16 VSSQ
DQM2 VDD
A0
BA1
CS
WE
A1
NC
RAS
DQM0
VDDQ DQ8
DQ7 VSSQ
DQ5 VDDQ
DQ3 VDDQ
VSSQ DQ10 DQ9
VSSQ DQ12 DQ14
DQ11 VDDQ VSSQ
DQ13 DQ15 VSS
VDDQ VSSQ DQ4
VDD
DQ0
DQ2
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2007
Revision
:
1.2
2/46
ESMT
BLOCK DIAGRAM
CLK
CKE
Address
Mode
Register
Clock
Generator
Bank D
Bank C
Bank B
Row
Address
Buffer
&
Refresh
Counter
Row Decoder
M12L64322A
Operation temperature condition -40
°
C ~ 85
°
C
Bank A
Sense Amplifier
Command Decoder
Control Logic
CS
RAS
CAS
WE
Data Control Circuit
Input & Output
Buffer
Latch Circuit
Column
Address
Buffer
&
Refresh
Counter
DQM0~3
Column Decoder
DQ
PIN DESCRIPTION
PIN
CLK
CS
CKE
A0 ~ A10
BA0 , BA1
RAS
NAME
System Clock
Chip Select
Clock Enable
Address
Bank Select Address
Row Address Strobe
INPUT FUNCTION
Active on the positive going edge to sample all inputs
Disables or enables device operation by masking or enabling all
inputs except CLK , CKE and DQM0-3.
Masks system clock to freeze operation from the next clock cycle.
CKE should be enabled at least one cycle prior new command.
Disable input buffers for power down in standby.
Row / column address are multiplexed on the same pins.
Row address : RA0~RA10, column address : CA0~CA7
Selects bank to be activated during row address latch time.
Selects bank for read / write during column address latch time.
Latches row addresses on the positive going edge of the CLK with
RAS low.
Enables row access & precharge.
Latches column address on the positive going edge of the CLK with
CAS low.
Enables column access.
Enables write operation and row precharge.
Latches data in starting from CAS ,
WE
active.
CAS
Column Address Strobe
WE
Write Enable
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2007
Revision
:
1.2
3/46
ESMT
M12L64322A
Operation temperature condition -40
°
C ~ 85
°
C
PIN
DQM0~3
DQ0 ~ DQ31
V
DD
/ V
SS
V
DDQ
/ V
SSQ
N.C
NAME
Data Input / Output Mask
Data Input / Output
Power Supply / Ground
Data Output Power / Ground
No Connection
INPUT FUNCTION
Makes data output Hi-Z, t
SHZ
after the clock and masks the output.
Blocks data input when DQM active.
Data inputs / outputs are multiplexed on the same pins.
Power and ground for the input buffers and the core logic.
Isolated power supply and ground for the output buffers to provide
improved noise immunity.
This pin is recommended to be left No Connection on the device.
ABSOLUTE MAXIMUM RATINGS
Parameter
Voltage on any pin relative to V
SS
Voltage on V
DD
supply relative to V
SS
Storage temperature
Power dissipation
Short circuit current
Note :
Symbol
V
IN
, V
OUT
V
DD
, V
DDQ
T
STG
P
D
I
OS
Value
-1.0 ~ 4.6
-1.0 ~ 4.6
-55 ~ +150
1
50
Unit
V
V
°
C
W
mA
Permanent device damage may occur if ABSOLUTE MAXIMUM RATING are exceeded.
Functional operation should be restricted to recommended operating condition.
Exposure to higher than recommended voltage for extended periods of time could affect device reliability.
DC OPERATING CONDITION
Recommended operating conditions (Voltage referenced to V
SS
= 0V, T
A
= -40 to 85 °C )
Parameter
Supply voltage
Input logic high voltage
Input logic low voltage
Output logic high voltage
Output logic low voltage
Input leakage current
Output leakage current
Note:
Symbol
V
DD
, V
DDQ
V
IH
V
IL
V
OH
V
OL
I
IL
I
OL
Min
3.0
2.0
-0.3
2.4
-
-5
-5
Typ
3.3
3.0
0
-
-
-
-
Max
3.6
V
DD
+0.3
0.8
-
0.4
5
5
Unit
V
V
V
V
V
1
2
I
OH
= -2mA
I
OL
= 2mA
3
4
Note
μ
A
μ
A
1. V
IH
(max) = 4.6V AC for pulse width
≤
10ns acceptable.
2. V
IL
(min) = -1.5V AC for pulse width
≤
10ns acceptable.
3. Any input 0V
≤
VIN
≤
V
DD
+ 0.3V, all other pins are not under test = 0V.
4. Dout is disabled , 0V
≤
V
OUT
≤
V
DD
.
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2007
Revision
:
1.2
4/46
ESMT
CAPACITANCE
(V
DD
= 3.3V, T
A
= 25
°C , f = 1MHZ)
Parameter
Input capacitance (A0 ~ A10, BA0 ~ BA1)
Input capacitance
(CLK, CKE, CS , RAS , CAS ,
WE
& DQM)
Data input/output capacitance (DQ0 ~ DQ31)
Symbol
CIN1
CIN2
COUT
Min
2
2
2
Max
4
4
5
M12L64322A
Operation temperature condition -40
°
C ~ 85
°
C
Unit
pF
pF
pF
DC CHARACTERISTICS
Recommended operating condition unless otherwise noted，T
A
= -40 to 85 °C
CAS
Latency
Version
-6
160
2
2
30
mA
10
10
10
40
10
3
2
250
mA
200
310
2
mA
mA
1,2
mA
mA
mA
Unit
Note
Parameter
Operating Current
(One Bank Active)
Precharge Standby Current
in power-down mode
Symbol
Test Condition
Burst Length = 1
I
CC1
I
CC2P
I
CC2PS
I
CC2N
I
CC2NS
t
RC
≥
t
RC(min)
I
OL
= 0 mA
CKE
≤
V
IL
(max), tcc = 15ns
CKE & CLK
≤
V
IL
(max), t
cc
=
∞
CKE
≥
V
IH
(min), CS
≥
V
IH
(min), t
cc
= 15ns
Input signals are changed one time during 30ns
CKE
≥
V
IH
(min), CLK
≤
V
IL
(max), t
cc
=
∞
input signals are stable
CKE
≤
V
IL
(max), tcc = 15ns
CKE & CLK
≤
V
IL
(max), t
cc
=
∞
CKE
≥
VIH(min), CS
≥
V
IH
(min), tcc = 15ns
Input signals are changed one time during 30ns
CKE
≥
V
IH
(min), CLK
≤
V
IL
(max), tcc =
∞
input signals are stable
IOL = 0 mA
Page Burst
2 Banks activated
t
RC
≥
t
RC(min)
CKE
≤
0.2V
mA
1,2
mA
Precharge Standby Current
in non power-down mode
Active Standby Current
in power-down mode
Active Standby Current
in non power-down mode
(One Bank Active)
I
CC3P
I
CC3PS
I
CC3N
I
CC3NS
Operating Current
(Burst Mode)
Refresh Current
Self Refresh Current
Note :
I
CC4
I
CC5
I
CC6
1. Measured with outputs open.
2. Input signals are changed one time during 2 CLKS.
Elite Semiconductor Memory Technology Inc.
Publication Date: Mar. 2007
Revision
:
1.2
5/46
51单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
