Pin No.
Pin Name
I/O
Description
-48-
IC DESCRIPTION -4/5 (HDC25D811B -1/6)
1
DAT0
I/O
Bi-directional data to DRAM
2
DAT1
I/O
Bi-directional data to DRAM
3
DAT2
I/O
Bi-directional data to DRAM
4
DAT3
I/O
Bi-directional data to DRAM
5
DAT4
I/O
Bi-directional data to DRAM
6
DAT5
I/O
Bi-directional data to DRAM
7
DAT6
I/O
Bi-directional data to DRAM
8
DAT7
I/O
Bi-directional data to DRAM
9
GND
-
GND
10
DAT8
I/O
Bi-directional data to DRAM
11
DAT9
I/O
Bi-directional data to DRAM
12
DAT10
I/O
Bi-directional data to DRAM
13
DAT11
I/O
Bi-directional data to DRAM
14
DAT12
I/O
Bi-directional data to DRAM
15
DAT13
I/O
Bi-directional data to DRAM
16
DAT14
I/O
Bi-directional data to DRAM
17
DAT15
I/O
Bi-directional data to DRAM
18
VDD
-
VDD
19
ADD0
O
Address output to DRAM
20
ADD1
O
Address output to DRAM
21
ADD2
O
Address output to DRAM
22
ADD3
O
Address output to DRAM
23
ADD4
O
Address output to DRAM
24
VDD
-
VDD
25
ADD5
O
Address output to DRAM
26
ADD6
O
Address output to DRAM
27
ADD7
O
Address output to DRAM
28
ADD8
O
Address output to DRAM
Address output to DRAM
Address output to DRAM
-
GND
SDRAM bank selection signal
DRAM RAS
DRAM CAS
DRAM WE
36
DQM(OE)
O
SDRAM DQM / EDO DRAM OE
37
SDRAMCLK
O
SDRAM clock
38
DMEMTEST
I
DIRECT MEMORY TEST
39
TEST_SE
I
TEST INPUT
40
GND
-
GND
41
TESTOUT0
I/O
TEST OUT (Default 0)
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9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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