Toshiba 23HLV87 Circuit Diagrams - Page 14

Sdram Schematic Diagram

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A B C D E F G H SDRAM SCHEMATIC DIAGRAM 8 (MAIN PCB) 8 4M*16bit SDRAM*2 FOR MIU0 4M*16bit SDRAM FOR MIU1 +3.3V_MC0 +3.3V_MQ0 +3.3V_MC1 +3.3V_MQ1 3 9 43 49 1 14 27 7 7 U28 +3.3VD L58 FB220 C234 0.1u +3.3V_MC0 C235 0.1u C236 0.1u +3.3VD L59 FB220 C237 0.1u C238 0.1u +3.3V_MQ0 C239 0.1u C240 0.1u C180 10UF 6 +3.3V_MC0 +3.3V_MQ0 U30 3 9 43 49 1 14 27 VCC VCC VCC VCCQ VCCQ VCCQ VCCQ VSS VSS VSS VSSQ VSSQ VSSQ VSSQ BA0 BA1 CSZ RAS CAS WEZ DQM0 DQM1 MCKE MCLK AR0 AR1 AR2 AR3 AR4 AR5 AR6 AR7 AR8 AR9 AR10 AR11 23 24 25 26 29 30 31 32 33 34 22 35 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 20 21 BA0 BA1 4M*16bit 19 18 17 16 CS RAS CAS WE 15 39 LDQM UDQM 37 38 CKE CLK DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 RP7 RP9 RP11 RP13 7 5 31 7 5 31 7 5 31 7 5 31 8642864286428642 47X4 47X4 47X4 47X4 MDATA0 MDATA1 MDATA2 MDATA3 MDATA4 MDATA5 MDATA6 MDATA7 MDATA8 MDATA9 MDATA10 MDATA11 MDATA12 MDATA13 MDATA14 MDATA15 13 5 7 13 5 7 24682468 13 57 2468 +3.3VD M2_A0 M2_A1 M2_A2 M2_A3 M2_A4 M2_A5 M2_A6 M2_A7 M2_A8 M2_A9 M2_A10 M2_A11 4.7k 4.7k M2_BA0 M2_BA1 R282 R283 47 47 RP14 47X4 M2_RAS M2_CAS M2_WE R286 R285 M2_DQM0 M2_DQM1 R287 47 R288 47 M2_CKE M2_MCLK R289 100 R290 100 U29 VCC VCC VCC 23 24 25 26 29 30 31 32 33 34 22 35 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 20 21 BA0 BA1 4M*16bit 19 18 17 16 CS RAS CAS WE 15 39 LDQM UDQM 37 38 CKE CLK VCCQ VCCQ VCCQ VCCQ DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 RP8 RP10 RP12 RP15 7 5 31 7 5 31 86428642 47X4 47X4 47X4 47X4 M2_DQ7 M2_DQ6 M2_DQ5 M2_DQ4 M2_DQ3 M2_DQ2 M2_DQ1 M2_DQ0 M2_DQ8 M2_DQ9 M2_DQ10 M2_DQ11 M2_DQ12 M2_DQ13 M2_DQ14 M2_DQ15 6 1 14 27 3 9 43 49 VSSQ VSSQ VSSQ VSSQ VSS VSS VSS 6 12 46 52 28 41 54 VSS VSS VSS VCC VCC VCC VSSQ VSSQ VSSQ VSSQ VCCQ VCCQ VCCQ VCCQ 5 4 BA0 BA1 CSZ RAS CAS WEZ AR0 AR1 AR2 AR3 AR4 AR5 AR6 AR7 AR8 AR9 AR10 AR11 R291 47 23 24 25 26 29 30 31 32 33 34 22 35 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 20 21 BA0 BA1 19 18 17 16 CS RAS CAS WE 4M*16bit DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 RP16 RP17 RP18 RP19 7 5 31 7 5 31 7 5 31 7 5 31 8642864286428642 47X4 47X4 47X4 47X4 MDATA16 MDATA17 MDATA18 MDATA19 MDATA20 MDATA21 MDATA22 MDATA23 MDATA24 MDATA25 MDATA26 MDATA27 MDATA28 MDATA29 MDATA30 MDATA31 DQM2 DQM3 15 39 LDQM UDQM MCKE MCLK 37 38 CKE CLK C244 0.1u +3.3V_MC0 C246 0.1u C247 0.1u C252 0.1u C253 0.1u +3.3V_MQ0 C254 0.1u C255 0.1u C241 NC 28 41 54 6 12 46 52 5 +3.3VD L60 +3.3V_MC1 4 FB220 C242 C243 C245 0.1u 0.1u 0.1u +3.3VD L61 FB220 +3.3V_MQ1 6 12 46 52 28 41 54 C248 0.1u C249 0.1u C250 0.1u C251 0.1u C179 10UF 3 3 2 2 1 1 A B C D E F G H H-11 H-12

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8
2
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7
8
H-12
H-11
(MAIN PCB)
SDRAM SCHEMATIC DIAGRAM
A
H
B
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E
F
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R
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A
6
R
A
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A
4
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A
3
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41
VSS
54
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VCCQ
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27
VSS
28
VSS
41
VSS
54
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4
4
0
1
Q
D
5
4
1
1
Q
D
7
4
2
1
Q
D
8
4
3
1
Q
D
0
5
4
1
Q
D
1
5
5
1
Q
D
3
5
0
A
B
0
2
1
A
B
1
2
S
C
9
1
S
A
R
8
1
S
A
C
7
1
E
W
6
1
M
Q
D
L
5
1
M
Q
D
U
9
3
E
K
C
7
3
K
L
C
8
3
VCC
1
VCC
14
VCC
27
VSS
28
VSS
41
VSS
54
VCCQ
3
VCCQ
9
VCCQ
43
VCCQ
49
VSSQ
6
VSSQ
12
VSSQ
46
VSSQ
52
8
2
U
t
i
b
6
1
*
M
4
8
2
U
t
i
b
6
1
*
M
4
1
6
L
0
2
2
B
F
1
6
L
0
2
2
B
F
7531
8642
4
X
7
4
2
1
P
R
7531
8642
4
X
7
4
2
1
P
R