DS2431+ Maxim Integrated Products, DS2431+ Datasheet - Page 11
![IC EEPROM 1KBIT TO92-3](/photos/6/93/69353/406-to-92_sml.jpg)
DS2431+
Manufacturer Part Number
DS2431+
Description
IC EEPROM 1KBIT TO92-3
Manufacturer
Maxim Integrated Products
Datasheet
1.DS2431X-S.pdf
(26 pages)
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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