LH540235M-20 SHARP [Sharp Electrionic Components], LH540235M-20 Datasheet - Page 4

• Manufacturer Part Number: LH540235M-20
• Description: 2048 x 18 / 4096 x 18 Synchronous FIFOs
• Manufacturer: SHARP [Sharp Electrionic Components]

LH540235/45
SUMMARY OF SIGNALS/PINS
BOLD ITALIC = Enhanced Operating Mode
4
D
RS
EMODE
WCLK
WEN
RCLK
REN
OE
LD
FL /RT
RXI /REN
NOTE: BOLD ITALIC = Enhanced operating mode.
64-PIN TQFP
0
– D
PIN
17
2
D
D
D
D
D
Enhanced Operating Mode
D
Data Inputs
Reset
Write Clock
Write Enable
Read Clock
Read Enable
Output Enable
Load
First Load/ Retransmit
Read Expansion Input/ Read Enable 2
D
D
D
D
D
D
D
D
D
D
15
14
13
12
10
11
9
8
7
6
5
4
3
2
0
1
10
12
13
14
15
16
11
2
3
4
5
6
7
8
9
1
Figure 3. Pin Connections for Thin Quad Flat Package
64 63 62 61 60 59
17 18 19 20 21 22
NAME
58 57 56 55 54 53 52 51 50 49
23 24 25 26 27 28 29 30 31 32
WXI /WEN
FF
PAF
WXO/HF
PAE
EF
RXO/ EF
Q
V
V
CC
SS
0
– Q
PIN
17
2
2
2048 x 18/4096 x 18 Synchronous FIFOs
Write Expansion Input/ Write Enable 2
Full Flag
Programmable Almost-Full Flag
Write Expansion Output/Half-Full Flag
Programmable Almost-Empty Flag
Empty Flag
Read Expansion Output /Empty Flag 2
Data Outputs
Power
Ground
48
47
46
45
44
43
42
40
39
38
37
36
35
34
33
41
NAME
Q
Q
V
Q
Q
V
Q
Q
V
Q
Q
Q
Q
V
Q
EMODE
SS
SS
SS
CC
14
13
12
11
10
9
8
7
6
5
4
TOP VIEW
540235-34