DS28E05R+T Maxim Integrated, DS28E05R+T Datasheet - Page 7

• Manufacturer Part Number: DS28E05R+T
• Description: EEPROM 1-Wire 112-BYTE EEPROM
• Manufacturer: Maxim Integrated

Specifications of DS28E05R+T

• Rohs: yes

DS28E05
Figure 5. User Memory Map
be reversed. Once the page protections are finalized, the
copy lock nibble (73h, upper) should be set to prevent
changes. The protection settings are read-accessible
through the Read Memory command. See the
Function Commands
The ROM ID uniquely identifies each individual DS28E05
and serves as network address in a mutidrop 1-Wire
network. The ROM ID can be read through the ROM
www.maximintegrated.com
*ONCE A NIBBLE IS PROGRAMMED TO ANYTHING OTHER THAN 0h, THE NIBBLE CANNOT BE CHANGED.
ADDRESS RANGE
0000h to 000Fh
0010h to 001Fh
0020h to 002Fh
0030h to 003Fh
0040h to 004Fh
0050h to 005Fh
0060h to 006Fh
0078h to 007Fh
0074h to 0075h
0076h to 0077h
0070h*
0071h*
0072h*
0073h*
section for command flow details.
TYPE
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R/(W)
R
R
upper nibble: copy lock
readout (family code at
Page protection PPB,
Page protection PPC,
Page protection PPD,
Manufacturer ID/User
Page protection PPA,
User memory page 0
User memory page 1
User memory page 2
User memory page 3
User memory page 4
User memory page 5
User memory page 6
lower nibble: page 0;
lower nibble: page 2,
lower nibble: page 4,
lower nibble: page 6,
Factory Word. Set at
upper nibble: page 1
upper nibble: page 3
upper nibble: page 5
ROM ID, alternate
address 0078h)
DESCRIPTION
factory.
bytes
Memory
PROTECTION CODES
—
—
—
—
—
—
—
0h: open (factory default);
Ah: EPROM mode;
all other codes: write protected
0h: open (factory default);
Ah: EPROM mode;
all other codes: write protected
0h: open (factory default);
Ah: EPROM mode;
all other codes: write protected
0h: open (factory default);
Ah: EPROM mode;
all other codes: write protected
Copy lock 0h: open (factory default);
all other codes: Page protection locations
PPA,PPB,PPC,PPD write protected. Prevents changes to the
page modes.
—
C3A9h: addresses 0074h to 0075h are user bytes.
3C56h: addresses 0074h to 0075h are write protected and
hold a Manufacturer ID.
—
Function commands; it is also read-accessible as part of
the 8th memory page. The family code is stored at the
lower address (78h).
Memory Function Commands
The memory function flowchart
protocols to access the memory of the DS28E05. The
memory is written in segments of 2 bytes.
1-Wire EEPROM
(Figure
Maxim Integrated │ 7
6) describes the