Rainbow Electronics DS2431 - Manual (Page 16)

DS2431: 1024-Bit, 1-Wire EEPROM
16 of 23
Figure 9-1. ROM Functions Flow Chart
From Figure 9
2
nd
Part
To Memory Functions
Flow Chart (Figure 7)
Master TX Bit 0
Master TX Bit 63
Master TX Bit 1
Bit 63
Match ?
RC = 0
DS2431 TX Bit 0
DS2431 TX Bit 0
Master TX Bit 0
DS2431 TX Bit 1
DS2431 TX Bit 1
Master TX Bit 1
DS2431 TX Bit 63
DS2431 TX Bit 63
Master TX Bit 63
RC = 1
Bit 1
Match ?
Bit 0
Match ?
Y
N
Y
N
Y
N Bit 63
Match ?
RC = 0
RC = 1
Bit 1
Match ?
Bit 0
Match ?
Y
N
Y
N
Y
N
RC = 0
DS2431 TX
CRC Byte
DS2431 TX
Serial Number
(6 Bytes)
DS2431 TX
Family Code
(1 Byte)
RC = 0
To Figure 9
2
nd
Part N F0h
Search ROM
Command ?
N 55h
Match ROM
Command ? N
CCh
Skip ROM
Command ?
Y Y Y Y
N 33h
Read ROM
Command ?
To Figure 9
2
nd
Part
From Memory Functions
Flow Chart (Figure 7)
Bus Master TX ROM
Function Command
DS2431 TX
Presence Pulse
OD
Reset Pulse ?
N
Y
OD = 0
Bus Master TX
Reset Pulse
From Figure 9, 2
nd
Part