DS1321_04 Datasheet, PDF (12/12 Pages) Dallas Semiconductor – Flexible Nonvolatile Controller with Lithium Battery Monitor

DS1321
DATA SHEET REVISION SUMMARY
The following represent the key differences between 03/26/96 and 06/12/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Changed I_CCO1 from 200 to 185 mA max
2. Changed I_CCO2 from 350 to 260 mA max
3. Changed V_BTP from 2.55 - 2.65V to 2.50 - 2.70V
4. Changed R_IM from 1.0 typ to 1.2 MW and 1.4 max to 1.5 MW
5. Changed t_PD from 5 typ, 15 max to 12 typ, 20 max
6. Changed t_RPO units from ns to ms
7. Changed block diagram to show U.L. compliance
The following represent the key differences between 06/12/97 and 09/29/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Changed AC test conditions
The following represent the key differences between 09/29/97 and 12/12/97 version of the DS1321 data
sheet. Please review this summary carefully.
1. Removed preliminary from title bar.
2. Specified which inputs and outputs are relevant for C_IN and C_OUT specs. This is not a change, just
a clarification.
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