DS2224Z Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS2224Z

EconoRAM

Dallas Semiconductor -> Maxim Integrated 

DS2223/DS2224

COMMAND WORD Figure 4

MSB

LSB

W/R

W/R

W/R

W/R

W/R

0

0

1

ALL 1s – WRITE

ANY 0 – READ

SELECT BITS

READ/WRITE TRANSACTION Figure 5

LSB

DS2223

COMMAND WORD

256–BIT SRAM

DS2224

COMMAND WORD

ROM 224–BIT SRAM

READ/WRITE FLOW

RECEIVE COMMAND WORD

(RESET ADDRESS POINTER)

8 BITS

264–BIT

TRANSACTION

READ/WRITE DATA BIT AND

INCREMENT ADDRESS POINTER

IS ADDRESS

N

POINTER = 256?

Y

HOLD ADDRESS POINTER

VALUE, WAIT FOR NEW

COMMAND WORD TO RESET

ADDRESS COUNTER

020698 4/10

4

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