DS2433S+ Maxim Integrated Products, DS2433S+ Datasheet - Page 7

• Manufacturer Part Number: DS2433S+
• Description: IC EEPROM 4KBIT 8SOIC
• Manufacturer: Maxim Integrated Products

Specifications of DS2433S+

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 4K (256 x 16)
• Interface: 1-Wire Serial
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Organization: 4 K x 1
• Interface Type: 1-Wire
• Supply Voltage (max): 6 V
• Supply Voltage (min): 2.8 V
• Maximum Operating Current: 500 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 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 5. DS2433 MEMORY MAP
Figure 6. ADDRESS REGISTER
READ MEMORY [F0h]
The read memory command may be used to read the entire memory. After issuing the command, the
master must provide the 2-byte target address. After the two bytes, the master reads data beginning from
the target address and may continue until the end of memory, at which point logic 1s will be read. It is
important to realize that the target address registers will contain the address provided. The ending
offset/data status byte is unaffected.
The hardware of the DS2433 provides a means to accomplish error-free writing to the memory section.
To safeguard reading data in the 1-Wire environment and to simultaneously speed up data transfers, it is
recommended to packetize data into data packets of the size of one memory page each. Such a packet
would typically store a 16-bit CRC with each page of data to insure rapid, error-free data transfers that
eliminate having to read a page multiple times to determine if the received data is correct or not. (Refer to
Application Note 114 for the recommended file structure.)
1FE0h TO 01FFh
0040h TO 01DFh
0000h TO 001Fh
0020h TO 003Fh
TARGET ADDRESS (TA1)
TARGET ADDRESS (TA2)
ENDING ADDRESS WITH
ADDRESS
DATA STATUS (E/S)
(READ ONLY)
32-BYTE INTERMEDIATE STORAGE SCRATCHPAD
T15
T7
AA
1) THIS BIT WILL ALWAYS BE 0.
32-BYTE FINAL STORAGE EEPROM
32-BYTE FINAL STORAGE EEPROM
32-BYTE FINAL STORAGE EEPROM
T14 T13 T12 T11 T10 T9
T6
1)
FINAL STORAGE EEPROM
7 of 23
T5
PF
T4
E4
T3
E3
T2
E2
T1
E1
T8
T0
E0
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