lh5p832 Sharp Microelectronics of the Americas, lh5p832 Datasheet - Page 2

• Manufacturer Part Number: lh5p832
• Manufacturer: Sharp Microelectronics of the Americas

LH5P832
PIN DESCRIPTION
TRUTH TABLE
NOTES:
1. X = H or L
2
OE/RFSH
I/O
CE
H
H
H
SIGNAL
L
L
L
A
R/W
1
0
- I/O
- A
OE/
RFSH
R/W
A
A
A
A
A
A
A
A
A
A
A
A
A
A
CE
A
14
13
12
11
10
9
8
6
2
1
0
7
5
4
3
7
26
23
21
24
25
10
20
22
8
27
2
3
4
6
9
1
5
7
8
2. OE Pulsewidth < 8 s
R/W
H
H
X
X
X
L
Read/Write input
Output Enable/Refresh input
Data inputs and outputs
Row address inputs
GENERATOR
COUNTER
ADDRESS
ADDRESS
REFRESH
ADDRESS
COLUMN
BUFFER
BUFFER
CLOCK
ROW
OE/RFSH
X
H
H
L
L
L
PIN NAME
ADDRESS
EXT/INT
MUX
CE-Only Refresh
3. OE Pulsewidth
Auto Refresh
Self Refresh
Standby
Figure 2. LH5P832 Block Diagram
MODE
Write
Read
AUTO-REFRESH
CONTROLLER
DECODER
ROW
8 s
I/O
Data out
Data in
128 COLUMNS
DECODER
High-Z
High-Z
High-Z
High-Z
COLUMN
256 ROWS
1
SENSE
MEMORY
AMPS
ARRAY
- I/O
SELF-REFRESH
TIMER
8
A
SIGNAL
GND
8
V
CE
- A
CC
CMOS 256K (32K
Self Refresh (I
SELECTOR
14
Operating (I
Operating (I
Operating (I
Operating (I
Standby (I
V
I/O
BB
BIAS-GENERATOR
I
CC
Column Address inputs
Chip Enable input
Power supply
Ground
CC2
CC1
CC1
CC1
CC1
CC3
)
)
)
)
)
BUFFER
BUFFER
)
DATA
DATA
OUT
IN
PIN NAME
8) Pseudo-Static RAM
NOTE
1, 2
1, 3
1
1
15
16
17
18
19
14
28
11
12
13
5P832-2
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
V
CC
1
2
3
4
5
6
7
8