k7r321884m Samsung Semiconductor, Inc., k7r321884m Datasheet - Page 7

• Manufacturer Part Number: k7r321884m
• Description: 1mx36-bit, 2mx18-bit Qdrtm Ii B4 Sram
• Manufacturer: Samsung Semiconductor, Inc.

K7R321884M
K7R323684M
Notes : 1. Internal burst counter is fixed as 2-bit linear, i.e. when first address is A0+0, next internal burst address is A0+1.
READ
D count=2
2. "READ" refers to read active status with R=Low, "READ" refers to read inactive status with R=high. "WRITE" and "WRITE" are the same case.
3. Read and write state machine can be active simulateneously.
4. State machine control timing sequence is controlled by K.
READ
D count=1
ALWAYS
D count=D count+1
READ ADDRESS
READ ADDRESS
INCREMENT
READ NOP
LOAD NEW
DDR READ
D count=0
READ
READ
D count=2
ALWAYS
STATE DIAGRAM
READ
POWER-UP
- 7 -
1Mx36 & 2Mx18 QDR
WRITE
WRITE
D count=2
ALWAYS
WRITE
D count=D count+1
WRITE ADDRESS
WRITE ADDRESS
INCREMENT
WRITE NOP
DDR WRITE
LOAD NEW
D count=0
WRITE
D count=1
ALWAYS
TM
II b4 SRAM
WRITE
D count=2
Dec. 2003
Rev 2.0