km4132g271b Samsung Semiconductor, Inc., km4132g271b Datasheet - Page 47

• Manufacturer Part Number: km4132g271b
• Description: 128k X 32bit X 2 Banks Synchronous Graphic Ram Lvttl
• Manufacturer: Samsung Semiconductor, Inc.

KM4132G271B
CLOCK
ADDR
DQM
CKE
RAS
CAS
DSF
WE
DQ
CS
Mode Register Set Cycle
* Both banks precharge should be completed before Mode Register Set cycle and auto refresh cycle.
*Note :
0
1
1. CS, RAS, CAS, & WE activation and DSF of low at the same clock cycle with address key will set internal
mode register.
2. Minimum 1 clock cycles should be met before new RAS activation.
3. Please refer to Mode Register Set table.
MODE REGISTER SET CYCLE
MRS
Key
*Note 2
*Note 3
*Note 1
2
Command
New
Ra
HIGH
Hi-Z
3
4
5
6
7
8
- 47
Auto Refresh Cycle
9
Auto Refresh
10
11
HIGH
12
Hi-Z
13
t
14
RC
15
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
¡ ó
Rev. 2.4 (May 1998)
CMOS SGRAM
16
17
New Command
18
: Don t care
19