LH540235M-20 Просмотр технического описания (PDF) - Sharp Electronics

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LH540235M-20

2048 × 18 / 4096 × 18 Synchronous FIFOs

Sharp Electronics 

LH540235/45

64-PIN TQFP

2048 x 18/4096 x 18 Synchronous FIFOs

TOP VIEW

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

D15

1

48

Q14

D14

2

47

Q13

D13

3

46

VSS

D12

4

45

Q12

D11

5

44

Q11

D10

6

43

VCC

D9

7

42

Q10

D8

8

41

Q9

D7

9

40

VSS

D6

10

39

Q8

D5

11

38

Q7

D4

12

37

Q6

D3

13

36

Q5

D2

14

35

VSS

D1

15

34

Q4

D0

16

33

EMODE

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

NOTE: BOLD ITALIC = Enhanced operating mode.

Figure 3. Pin Connections for Thin Quad Flat Package

540235-34

SUMMARY OF SIGNALS/PINS

PIN

D0 – D17

RS

EMODE

WCLK

WEN

RCLK

REN

OE

LD

FL/RT

RXI/REN2

NAME

Data Inputs

Reset

Enhanced Operating Mode

Write Clock

Write Enable

Read Clock

Read Enable

Output Enable

Load

First Load/Retransmit

Read Expansion Input/Read Enable 2

BOLD ITALIC = Enhanced Operating Mode

4

PIN

WXI/WEN2

FF

PAF

WXO/HF

PAE

EF

RXO/EF2

Q0 – Q17

VCC

VSS

NAME

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

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