DS2431-A1 Maxim, DS2431-A1 Datasheet - Page 13

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

Figure 9. ROM Functions Flow Chart
FUNCTION COMMAND
BUS MASTER Tx ROM
SERIAL NUMBER
DS2431-A1 Tx
FAMILY CODE
DS2431-A1 Tx
DS2431-A1 Tx
COMMAND?
READ ROM
CRC BYTE
(6 BYTES)
(1 BYTE)
RC = 0
33h
Y
FROM MEMORY FUNCTIONS
FLOW CHART (FIGURE 7)
______________________________________________________________________________________
N
MASTER Tx BIT 63
MASTER Tx BIT 0
MASTER Tx BIT 1
BIT 63 MATCH?
BIT 0 MATCH?
BIT 1 MATCH?
MATCH ROM
COMMAND?
RC = 0
RC = 1
55h
Y
Y
Y
Y
TO MEMORY FUNCTIONS
FLOW CHART (FIGURE 7)
PRESENCE PULSE
BUS MASTER Tx
DS2431-A1 Tx
RESET PULSE
N
N
N
N
N
N
N
DS2431-A1 Tx BIT 63
DS2431-A1 Tx BIT 63
DS2431-A1 Tx BIT 0
DS2431-A1 Tx BIT 0
DS2431-A1 Tx BIT 1
DS2431-A1 Tx BIT 1
MASTER Tx BIT 63
MASTER Tx BIT 0
MASTER Tx BIT 1
BIT 63 MATCH?
BIT 0 MATCH?
BIT 1 MATCH?
SEARCH ROM
COMMAND?
for Automotive Applications
RC = 0
RC = 1
F0h
Y
Y
Y
Y
1024-Bit, 1-Wire EEPROM
N
COMMAND?
SKIP ROM
RC = 0
CCh
Y
N
COMMAND?
RESUME
RC = 1?
A5h
Y
Y
MASTER Tx
RESET?
N
N
N
Y
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