DS1972-F3+ Maxim Integrated Products, DS1972-F3+ Datasheet - Page 15

• Manufacturer Part Number: DS1972-F3+
• Description: IBUTTON EEPROM 1KBit F3
• Manufacturer: Maxim Integrated Products
• Series: iButton®r

Specifications of DS1972-F3+

• Rohs Information: IButton RoHS Compliance Plan
• Memory Size: 128B
• Memory Type: EEPROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 9b. ROM Functions Flowchart (continued)
______________________________________________________________________________________
NOTE: THE OD FLAG REMAINS AT 1 IF THE DEVICE WAS ALREADY AT OVERDRIVE SPEED BEFORE THE OVERDRIVE-MATCH ROM COMMAND WAS ISSUED.
TO FIGURE 9a
FROM FIGURE 9a
FROM FIGURE 9a
TO FIGURE 9a
COMMAND?
RESUME
RC = 1?
A5h
Y
Y
MASTER Tx
RESET?
N
N
N
Y
RC = 0; OD = 1
OVERDRIVE-
SKIP ROM?
MASTER Tx
RESET?
1024-Bit EEPROM iButton
3Ch
Y
N
Y
N
MASTER Tx BIT 63
MASTER Tx BIT 0
MASTER Tx BIT 1
BIT 63 MATCH?
RC = 0; OD = 1
BIT 0 MATCH?
BIT 1 MATCH?
MATCH ROM?
OVERDRIVE-
RC = 1
69h
Y
Y
Y
Y
N
N
N
N
(SEE NOTE)
(SEE NOTE)
(SEE NOTE)
OD = 0
OD = 0
OD = 0
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