DS17885S-3+ Maxim Integrated Products, DS17885S-3+ Datasheet - Page 21

• Manufacturer Part Number: DS17885S-3+
• Description: IC RTC 3V 8K NV RAM 24-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAMr

Specifications of DS17885S-3+

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.7 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 5. Extended Bank Register Bank Definition
Note: Reserved bits can be written to any value, but always read back as zeros.
0Dh
0Eh
00h
3Fh
40h
7Fh
Timekeeping and Control
50 Bytes – User RAM
64 Bytes – User RAM
DV0 = 0
Bank 0
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0Dh
4Ah
4Bh
4Ch
4Dh
5Ah
5Bh
5Ch
5Dh
0Eh
4Eh
5Eh
00h
3Fh
40h
41h
42h
43h
44h
45h
46h
47h
48h
49h
4Fh
50h
51h
52h
53h
54h
55h
56h
57h
58h
59h
5Fh
7Fh
Real-Time Clocks
Extended Control Register 4A
Extended Control Register 4B
Extended RAM Address MSB
Extended RAM Address LSB
Timekeeping and Control
Extended RAM Data Port
2nd Byte Serial Number
3rd Byte Serial Number
4th Byte Serial Number
5th Byte Serial Number
6th Byte Serial Number
1st Byte Serial Number
50 Bytes – User RAM
Model Number Byte
RTC Write Counter
RTC Address – 2
RTC Address – 3
Century Byte
Date Alarm
CRC Byte
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
DV0 = 1
Bank 1
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