DS2431-A1 Maxim, DS2431-A1 Datasheet - Page 10

• Manufacturer Part Number: DS2431-A1
• Description: The DS2431-A1 is an AEC-Q100 Grade 1 qualified version of the DS2431
• Manufacturer: Maxim

1024-Bit, 1-Wire EEPROM
for Automotive Applications
Figure 7. Memory Function Flow Chart (continued)
10
FROM FIGURE 7
1ST PART
______________________________________________________________________________________
FROM FIGURE 7
1ST PART
TA1 (T7:T0), TA2 (T15:T8)
COPY SCRATCHPAD?
MASTER Tx RESET?
BUS MASTER Tx
AND E/S BYTE
BUS MASTER
AUTH. CODE
MATCH?
Rx "1"s
N
55h
Y
Y
N
Y
N
DURATION: t
APPLICABLE TO ALL R/W
MEMORY LOCATIONS.
T15:T0 < 0090h?
N
PROG
N
Y
Y
* 1-Wire IDLE HIGH FOR POWER
COPY PROTECTED?
DS2431-A1 COPIES
MASTER Tx RESET?
MASTER Tx RESET?
DATA TO ADDRESS
SCRATCHPAD
DS2431 Tx "0"
DS2431 Tx "1"
PF = 0?
Y
AA = 1
Y
N
N
Y
TA1 (T7:T0), TA2 (T15:T8)
READ MEMORY?
ADDRESS < 90h?
BUS MASTER Tx
*
N
N
F0h
Y
INCREMENTS
BUS MASTER
DS2431-A1
ADDRESS
COUNTER
Rx "1"s
N
Y
Y
N
DS2431-A1 SETS MEMORY
ADDRESS = (T15:T0)
MEMORY ADDRESS
MASTER Tx RESET?
MASTER Tx RESET?
DATA BYTE FROM
ADDRESS < 8Fh?
BUS MASTER Rx
N
N
Y
Y
N
MASTER Tx RESET?
BUS MASTER
Rx "1"s
Y