TC55V400AFT-70 Datasheet, PDF (2/11 Pages) Toshiba Semiconductor – 262,144-WORD BY 16-BIT FULL CMOS STATIC RAM

BLOCK DIAGRAM
TC55V400AFT-55,-70
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
I/O9
I/O10
I/O11
I/O12
I/O13
I/O14
I/O15
I/O16
CE
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A17
MEMORY CELL ARRAY
2,048 ´ 128 ´ 16
(4,194,304)
V_DD
GND
SENSE AMP
CLOCK
GENERATOR
COLUMN ADDRESS
DECODER
COLUMN ADDERSS
REGISTER
COLUMN ADDRESS
BUFFER
CE
A0 A1 A2 A3 A14 A15 A16
R/W
OE
UB
LB
CE1
CE
CE2
OPERATING MODE
MODE
Read
Write
Output Deselect
Standby
* = don't care
H = logic high
L = logic low
CE1 CE2 OE R/W LB
L
L
H
L
H
H
L
L
L
H
*
L
H
L
L
H
H
H
*
L
H
*
*
H
H
*
*
*
*
*
L
*
*
*
UB
I/O1~I/O8
L Output
L High-Z
H Output
L Input
L High-Z
H Input
*
High-Z
H
*
High-Z
*
I/O9~I/O16
Output
Output
High-Z
Input
Input
High-Z
High-Z
High-Z
POWER
I_DDO
I_DDO
I_DDO
I_DDO
I_DDO
I_DDO
I_DDO
I_DDS
2001-09-04 2/11