MC-45V16AD641 Datasheet, PDF (11/16 Pages) NEC – 16M-WORD BY 64-BIT VirtualChannel SYNCHRONOUS DYNAMIC RAM MODULE UNBUFFERED TYPE

MC-45V16AD641
Serial PD
(1/2)
Byte No.
Function Described
Hex Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Notes
0 Defines the number of bytes written
into serial PD memory
1 Total number of bytes of serial PD
memory
2 Fundamental memory type
80H 1
0
0
0
0
0
0
0 128 bytes
08H 0
0
0
0
1
0
0
0 256 bytes
08H 0
0
0
0
1
0
0
0 VC SDRAM
3 Number of row addresses
0DH 0
0
0
0
1
1
0
1 13 rows
4 Number of column addresses
07H 0
0
0
0
0
1
1
1 7 columns
5 Number of banks
02H 0
0
0
0
0
0
1
0 2 banks
6 Data width
40H 0
1
0
0
0
0
0
0 64 bits
7 Data width (continued)
00H 0
0
0
0
0
0
0
00
8 Voltage interface standard
01H 0
0
0
0
0
0
0
1 LVTTL
5
9 Read latency (/CAS latency) = 2 -A75 75H 0
1
1
1
0
1
0
1 7.5 ns
cycle time
-A10 A0H 1
0
1
0
0
0
0
0 10 ns
5
10 Read latency (/CAS latency) = 2 -A75 54H 0
1
0
1
0
1
0
0 5.4 ns
access time
-A10 60H 0
1
1
0
0
0
0
0 6 ns
11 DIMM configuration type
00H 0
0
0
0
0
0
0
0 None
12 Refresh rate / type
80H 1
0
0
0
0
0
0
0 Normal
13 VC SDRAM width
08H 0
0
0
0
1
0
0
0 ×8
14 Error checking SDRAM width
00H 0
0
0
0
0
0
0
0 None
15 Minimum clock delay
01H 0
0
0
0
0
0
0
1 1 clock
16 Burst length supported
1FH 0
0
0
1
1
1
1
1 1, 2, 4, 8, 16
17 Number of banks on each VC SDRAM 02H 0
0
0
0
0
0
1
0 2 banks
•
18 Read latency (/CAS latency) supported 02H 0
0
0
0
0
0
1
02
19 /CS latency supported
01H 0
0
0
0
0
0
0
10
20 /WE latency supported
01H 0
0
0
0
0
0
0
10
21 VC SDRAM module attributes
00H 0
0
0
0
0
0
0
0
22 VC SDRAM device attributes : general 0EH 0
0
0
0
1
1
1
0
• 23-26
•
27
tRP (MIN.)
00H 0
0
0
0
0
0
0
0
-A75 14H 0
0
0
1
0
1
0
0 20 ns
•
28
tRRD (MIN.)
-A10 14H 0
0
0
1
0
1
0
0 20 ns
-A75 0FH 0
0
0
0
1
1
1
1 15 ns
•
29
tAPD (MIN.)
-A10 14H 0
0
0
1
0
1
0
0 20 ns
-A75 0FH 0
0
0
0
1
1
1
1 15 ns
-A10 14H 0
0
0
1
0
1
0
0 20 ns
•
30
tRAS (MIN.)
-A75 34H 0
0
1
1
0
1
0
0 52 ns
-A10 3CH 0
0
1
1
1
1
0
0 60 ns
Data Sheet M13823EJ6V0DS00
11