ds2431pt-r Maxim Integrated Products, Inc., ds2431pt-r Datasheet - Page 9

• Manufacturer Part Number: ds2431pt-r
• Description: Ds2431 1024-bit 1-wire Eeprom
• Manufacturer: Maxim Integrated Products, Inc.

Figure 7-1. Memory Function Flow Chart
Bus Master
RX “1”s
Increments
DS2431
E2:E0
TA1 (T7:T0), TA2 (T15:T8)
N
N
Bus Master TX Memory
Data Bytes as they were
of Command, Address,
sent by the bus master
Master TX Data Byte
Function Command
DS2431 TX CRC16
Sets E2:E0 = T2:T0
Bus Master TX
Write Scratch-
To Scratchpad
Clears AA = 0
DS2431 sets
TX Reset ?
TX Reset ?
Sets PF = 1
Master
Master
PF = 0
E2:E0
T2:T0
pad ?
= 7 ?
= 0 ?
0Fh
Flow Chart (Figure 9)
To ROM Functions
N
Y
Y
Y
Y
9 of 24
N
Y
N
From ROM Functions
Flow Chart (Figure 9)
Applies only if the
memory area is not
protected.
If write-protected, then
the DS2431 copies the
data byte from the tar-
get address into the SP.
If in EPROM mode,
then the DS2431 loads
the bitwise logical AND
of the transmitted byte
and the data byte from
the targeted address
into the SP.
DS2431: 1024-Bit, 1-Wire EEPROM
From Figure 7
To Figure 7
2
2
nd
nd
Part
Part