DS24B33 Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS24B33

4Kb 1-Wire EEPROM with 200k Write/Erase Cycles

Maxim Integrated 

4Kb 1-Wire EEPROM with

200k Write/Erase Cycles

BUS MASTER Tx MEMORY

FUNCTION COMMAND

FROM ROM FUNCTIONS

FLOWCHART (FIGURE 9)

0Fh

N

WRITE SCRATCHPAD?

AAh

N

READ SCRATCHPAD?

DS24B33

INCREMENTS

SCRATCHPAD

OFFSET

Y

DS24B33 CLEARS PF, AA

BUS MASTER Tx EEPROM

ARRAY TARGET ADDRESS

TA1 (T[7:0]), TA2 (T[15:8])

DS24B33 SETS SCRATCHPAD

OFFSET = (T[4:0])

MASTER Tx DATA BYTE

TO SCRATCHPAD OFFSET

DS24B33 SETS (E[4:0]) =

SCRATCHPAD OFFSET

MASTER Tx RESET?

Y

N

N

SCRATCHPAD OFFSET

= 11111b?

Y

DS24B33 Tx CRC-16 OF

COMMAND, ADDRESS,

AND DATA BYTES AS THEY

WERE SENT BY THE BUS

MASTER

DS24B33

INCREMENTS

SCRATCHPAD

OFFSET

N

PARTIAL BYTE?

Y

PF = 1

Y

BUS MASTER Rx

TA1 (T[7:0]), TA2 (T[15:8]),

AND E/S BYTE

DS24B33 SETS SCRATCHPAD

OFFSET = (T[4:0])

BUS MASTER Rx DATA BYTE

TO SCRATCHPAD OFFSET

Y

MASTER Tx RESET?

N

N

SCRATCHPAD OFFSET

= 11111b?

Y

TO FIGURE 7b

BUS MASTER

N

Rx "1"s

MASTER Tx RESET?

Y

BUS MASTER

N

Rx "1"s

MASTER Tx RESET?

Y

FROM FIGURE 7b

TO ROM FUNCTIONS

FLOWCHART (FIGURE 9)

Figure 7a. Memory Function Flowchart

10 ______________________________________________________________________________________

Share Link: