km432s2030c Samsung Semiconductor, Inc., km432s2030c Datasheet - Page 42

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km432s2030c

Manufacturer Part Number
km432s2030c
Description
2m X 32 Sdram 512k X 32bit X 4 Banks Synchronous Dram Lvttl
Manufacturer
Samsung Semiconductor, Inc.
Datasheet

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CLOCK
KM432S2030C
ADDR
DQM
CKE
RAS
CAS
WE
DQ
CS
Mode Register Set Cycle
* All banks precharge should be completed before Mode Register Set cycle and auto refresh cycle.
*Note :
0
1
1. CS, RAS, CAS, & WE activation at the same clock cycle with address key will set internal mode register.
2. Minimum 2 clock cycles should be met before new RAS activation.
3. Please refer to Mode Register Set table.
MODE REGISTER SET CYCLE
MRS
Key
*Note 3
*Note 2
*Note 1
2
HIGH
Hi-Z
3
Command
New
Ra
4
5
6
7
8
Auto Refresh Cycle
9
0
10
Auto Refresh
1
11
2
HIGH
12
3
Hi-Z
13
4
14
5
tRC
15
6
REV. 1.1 Mar. '99
CMOS SDRAM
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
¡ó
16
7
17
8
New Command
18
9
: Don't care
10
19

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