MR4A16AYS35 datasheet(2/20 Pages) FREESCALE

Part #	MR4A16AYS35

Description	64K x 16-Bit 3.3-V Asynchronous Magnetoresistive RAM

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

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MR0A16A Advanced Information Data Sheet, Rev. 0

2

Freescale Semiconductor

Device Pin Assignment

Figure 1. Block Diagram

Device Pin Assignment

Figure 2. MR0A16A in 44-Pin TSOP Type II Package

UPPER BYTE OUTPUT ENABLE

LOWER BYTE OUTPUT ENABLE

COLUMN

DECODER

ROW

DECODER

64K x 16

BIT

MEMORY

ARRAY

FINAL

WRITE

DRIVERS

SENSE

AMPS

UPPER BYTE WRITE ENABLE

LOWER BYTE WRITE ENABLE

OUTPUT

ENABLE

BUFFER

CHIP

ENABLE

BUFFER

WRITE

ENABLE

BUFFER

BYTE

ENABLE

BUFFER

ADDRESS

BUFFERS

UPPER

BYTE

OUTPUT

BUFFER

LOWER

BYTE

OUTPUT

BUFFER

UPPER

BYTE

WRITE

DRIVER

LOWER

BYTE

WRITE

DRIVER

DQL[7:0]

DQU[15:8]

G

E

W

UB

LB

8

16

A[15:0]

8

UB

LB

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

A15

A14

A13

G

UB

LB

DQU15

DQU14

DQU13

DQU12

VSS

VDD

DQU11

DQU10

DQU9

DQU8

NC

VDD

VSS

A12

A11

A10

A0

A1

A2

A3

A4

E

DQL0

DQL1

DQL2

DQL3

VDD

VSS

DQL4

DQL5

DQL6

DQL7

W

A5

A6

A7

A8

A9

Table 1. Pin Functions

Signal Name

Function

A[15:0]

Address input

E

Chip enable

W

Write enable

G

Output enable

UB

Upper byte select

LB

Lower byte select

DQL[7:0]

Data I/O, lower byte

DQU[15:8]

Data I/O, upper byte

VDD

Power supply

VSS

Ground

NC

Do not connect this pin

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MR4A16AYS35 Datasheet(PDF) 2 Page - Freescale Semiconductor, Inc

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