DS2431+ Maxim Integrated Products, DS2431+ Datasheet - Page 11

• Manufacturer Part Number: DS2431+
• Description: IC EEPROM 1KBIT TO92-3
• Manufacturer: Maxim Integrated Products

Specifications of DS2431+

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (256 x 4)
• Interface: 1-Wire Serial
• Operating Temperature: -40°C ~ 85°C
• Package / Case: TO-92-3 (Standard Body), TO-226
• Organization: 1 K x 1
• Interface Type: 1-Wire
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 2.8 V
• Maximum Operating Current: 0.8 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Speed: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 7b. Memory Function Flowchart (continued)
FROM FIGURE 7a
TO FIGURE 7a
TA1 (T[7:0]), TA2 (T[15:8])
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.
T[15:0] < 0090h?
N
PROG
N
Y
Y
* 1-Wire IDLE HIGH FOR POWER.
COPY PROTECTED?
MASTER Tx RESET?
MASTER Tx RESET?
DATA TO ADDRESS
DS2431 COPIES
SCRATCHPAD
DS2431 Tx "0"
DS2431 Tx "1"
PF = 0?
Y
AA = 1
Y
N
N
Y
TA1 (T[7:0]), TA2 (T[15:8])
1024-Bit, 1-Wire EEPROM
READ MEMORY?
ADDRESS < 90h?
BUS MASTER Tx
*
N
N
F0h
Y
INCREMENTS
BUS MASTER
ADDRESS
COUNTER
DS2431
Rx "1"s
N
Y
Y
N
DS2431 SETS MEMORY
ADDRESS = (T[15:0])
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
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