KM23C64000T Datasheet, PDF (1/4 Pages) Samsung semiconductor – 64M-Bit (8Mx8 /4Mx16) CMOS MASK ROM

KM23C64000T
CMOS MASK ROM
64M-Bit (8Mx8 /4Mx16) CMOS MASK ROM
FEATURES
• Switchable organization
8,388,608 x 8(byte mode)
4,194,304 x 16(word mode)
• Fast access time : 120ns(Max.)
• Supply voltage : single +5V
• Current consumption
Operating : 70mA(Max.)
Standby : 50µA(Max.)
• Fully static operation
• All inputs and outputs TTL compatible
• Three state outputs
• Package : KM23C64000T : 44-TSOP2-400
GENERAL DESCRIPTION
The KM23C64000T is a fully static mask programmable ROM
fabricated using silicon gate CMOS process technology, and is
organized either as 8,388,608 x 8 bit(byte mode) or as
4,194,304 x 16 bit(word mode) depending on BHE voltage
level.(See mode selection table)
This device operates with a 5V single power supply, and all
inputs and outputs are TTL compatible.
Because of its asynchronous operation, it requires no external
clock assuring extremely easy operation.
It is suitable for use in program memory of microprocessor, and
data memory, character generator.
The KM23C64000T is packaged in a 44-TSOP2.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
A21
.
.
.
.
.
.
.
.
A0
A-1
X
BUFFERS
AND
DECODER
Y
BUFFERS
AND
DECODER
CE
OE
BHE
CONTROL
LOGIC
MEMORY CELL
MATRIX
(4,194,304x16/
8,388,608x8)
SENSE AMP.
BUFFERS
...
Q0/Q8 Q7/Q15
Pin Name
A0 - A21
Q0 - Q14
Q15 /A-1
BHE
CE
OE
VCC
VSS
Pin Function
Address Inputs
Data Outputs
Output 15(Word mode)/
LSB Address(Byte mode)
Word/Byte selection
Chip Enable
Output Enable
Power (+5V)
Ground
A21 1
A18 2
A17 3
A7 4
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
CE 12
VSS 13
OE 14
Q0 15
Q8 16
Q1 17
Q9 18
Q2 19
Q10 20
Q3 21
Q11 22
TSOP2
44 A20
43 A19
42 A8
41 A9
40 A10
39 A11
38 A12
37 A13
36 A14
35 A15
34 A16
33 BHE
32 VSS
31 Q15/A-1
30 Q7
29 Q14
28 Q6
27 Q13
26 Q5
25 Q12
24 Q4
23 VCC
KM23C64000T