DS2422 Maxim, DS2422 Datasheet - Page 10

• Manufacturer Part Number: DS2422
• Description: The DS2422 temperature/data logger combines the core functions of a fully featured data logger in a single chip
• Manufacturer: Maxim

Figure 5. 64-Bit Lasered ROM
MSB
MSB
Figure 6. 1-Wire CRC Generator
Figure 7. DS2422 Memory Map
X
0
STAGE
ADDRESS
0000H to
0020H to
0200H to
0220H to
0240H to
0260H to
0280H to
0400H to
0420H to
1000H to
CRC Code
1
st
8-Bit
0FFFH
2FFFH
01FFH
03FFH
001FH
021FH
023FH
025FH
027FH
041FH
X
1
LSB
STAGE
2
nd
MSB
X
2
STAGE
32-Byte Intermediate Storage Scratchpad
3
32-Byte General-Purpose SRAM (R/W)
rd
Calibration Memory Page 1 (R/W)
Calibration Memory Page 2 (R/W)
(Reserved For Future Extensions)
(Reserved For Future Extensions)
General-Purpose SRAM (R/W)
X
Datalog Memory (Read-Only)
3
Trim Register Page (R/W)
STAGE
32-Byte Register Page 1
32-Byte Register Page 2
4
th
Polynomial = X
48-Bit Serial Number
X
8
10 of 49
4
+ X
STAGE
5
5
th
+ X
4
+ 1
LSB
X
Pages 33 to 127
5
Pages 20 to 31
STAGE
Pages 128
6
Pages 1
Page 16
Page 17
Page 18
Page 19
Page 32
MSB
Page 0
th
to 383
to 15
8-Bit Family
INPUT DATA
Code (41h)
X
6
STAGE
7
th
LSB
LSB
X
7
STAGE
8
th
X
8
DS2422