DS1217M Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1217M

Nonvolatile Read/Write Cartridge

Dallas Semiconductor -> Maxim Integrated 

DS1217M

REMOTE CONNECTION VIA A RIBBON

CABLE

Existing systems which contain 28-pin bytewide sock-

ets can be retrofitted using a 28-pin DIP plug. The DIP

plug, AMP Part Number 746616-2, can be inserted into

the 28-pin site after the memory is removed. Connection

to the cartridge is accomplished via a 28-pin cable con-

nected to a 30-contact card edge connector, AMP Part

Number 499188-4. The 28-pin ribbon cable must be

right-justified, such that positions A1 and B1 are left dis-

connected. For applications where the cartridge is in-

stalled or removed with power applied, both ground con-

tacts (A1 and B1) on the card edge connector should be

grounded to further enhance data integrity. Access time

push-out may occur as the distance between the car-

tridge and the driving circuitry is increased.

CARTRIDGE NUMBERING Table 1

PART NO.

DS1217M 1/2-25

DS1217M 1-25

DS1217M 2-25

DS1217M 3-25

DS1217M 4-25

DENSITY

64K x 8

128K x 8

156K x 8

384K x 8

512K x 8

NO. OF BANKS

2

4

8

12

16

ADDRESS INPUT PATTERN Table 2

ADDRESS

INPUTS

BIT SEQUENCE

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

A8

1 0 1 0 0 0 1 1 0 1 0XXXXX

A9

0101110011000011

A10

1010001101011100

A11

0101110010100011

X = See Table 3

BANK SELECT TABLE Table 3

BANK

A8 BIT SEQUENCE

SELECTED 11 12 13 14 15

BANKS OFF 0 X X X X

BANK 0

10000

BANK 1

10001

BANK 2

10010

BANK 3

10011

BANK 4

10100

BANK 5

10101

BANK 6

10110

BANK

BANK 7

BANK 8

BANK 9

BANK 10

BANK 11

BANK 12

BANK 13

BANK 14

BANK 15

A8 BIT SEQUENCE

10111

11000

11001

11010

11011

11100

11101

11110

11111

030598 3/8

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