EDS1232CATA Datasheet, PDF (1/53 Pages) Elpida Memory – 128M bits SDRAM

DATA SHEET
128M bits SDRAM
EDS1232CATA (4M words × 32 bits) _Description
The EDS1232CA is a 128M bits SDRAM organized as
1,048,576 words × 32 bits × 4 banks. All inputs and
outputs are synchronized with the positive edge of the
clock.
EIt is packaged in 86-pin plastic TSOP (II).
Features
• 2.5V power supply
O_{• Clock frequency: 100MHz (max.)}
• Single pulsed /RAS
• ×32 organization
• 4 banks can operate simultaneously and
independently
L • Burst read/write operation and burst read/single write
operation capability
• Programmable burst length (BL): 1, 2, 4, 8 and full
page
• 2 variations of burst sequence
P ^{⎯ Sequential (BL = 1, 2, 4, 8, full page)}
⎯ Interleave (BL = 1, 2, 4, 8)
• Programmable /CAS latency (CL): 2, 3
• Byte control by DQM
r ^{• Refresh cycles: 4096 refresh cycles/64ms}
• 2 variations of refresh
⎯ Auto refresh
oduct _{⎯ Selfrefresh}
Pin Configurations
/xxx indicate active low signal.
86-pin Plastic TSOP(II)
VDD 1
DQ0 2
VDDQ 3
DQ1 4
DQ2 5
VSSQ 6
DQ3 7
DQ4 8
VDDQ 9
DQ5 10
DQ6 11
VSSQ 12
DQ7 13
NC 14
VDD 15
DQM0 16
/WE 17
/CAS 18
/RAS 19
/CS 20
A11 21
BA0 22
BA1 23
A10(AP) 24
A0 25
A1 26
A2 27
DQM2 28
VDD 29
NC 30
DQ16 31
VSSQ 32
DQ17 33
DQ18 34
VDDQ 35
DQ19 36
DQ20 37
VSSQ 38
DQ21 39
DQ22 40
VDDQ 41
DQ23 42
VDD 43
86 VSS
85 DQ15
84 VSSQ
83 DQ14
82 DQ13
81 VDDQ
80 DQ12
79 DQ11
78 VSSQ
77 DQ10
76 DQ9
75 VDDQ
74 DQ8
73 NC
72 VSS
71 DQM1
70 NC
69 NC
68 CLK
67 CKE
66 A9
65 A8
64 A7
63 A6
62 A5
61 A4
60 A3
59 DQM3
58 VSS
57 NC
56 DQ31
55 VDDQ
54 DQ30
53 DQ29
52 VSSQ
51 DQ28
50 DQ27
49 VDDQ
48 DQ26
47 DQ25
46 VSSQ
45 DQ24
44 VSS
(Top view)
A0 to A11, Address inputs
DQM0 to DQM3 DQ mask enable
BA0, BA1 Bank select
CKE
Clock enable
DQ0 to DQ31 Data input/output
CLK
Clock input
/CS
Chip select
VDD
Supply voltage
/RAS
Row address strobe VSS
Ground
/CAS
Column address strobe VDDQ
Supply voltage for DQ
/WE
Write enable
VSSQ
Ground for DQ
NC
No connection
Document No. E0388E11 (Ver. 1.1)
Date Published May 2003 (K) Japan
URL: http://www.elpida.com
This product became EOL in March, 2007.
©Elpida Memory, Inc. 2003