DS1323_1205 Datasheet, PDF (11/14 Pages) Maxim Integrated Products – 3.3V Flexible Nonvolatile Controller with Lithium Battery Monitor

DS1323
NOTES:
2. All voltages referenced to ground.
3. In battery backup mode, inputs must never be below ground or above V_CCO.
4. Measured with outputs open.
5. All inputs within 0.3V of ground or V_CCI.
6. Measured with a load as shown in Figure 3.
7. BW and RST are open drain outputs and, as such, cannot source current. External pull-up resistors
should be connected to these pins for proper operation. Both BW and RST can sink 10mA.
8. Chip Enable Outputs CEO1 – CEO4 can only sustain leakage current in the battery backup mode.
9. t_CE maximum must be met to ensure data integrity on power down.
10. CEO1 through CEO4 will be held high for a time equal to t_REC after V_CCI crosses V_CCTP on power-up.
11. The DS1323 is recognized by Underwriters Laboratories (UL) under file E99151.
DC TEST CONDITIONS
Outputs Open
All voltages are referenced to ground
OUTPUT LOAD Figure 3
AC TEST CONDITIONS
Output Load: See below
Input Pulse Levels: 0 – 3.0V
Timing Measurement Reference Levels
Input: 1.5V
Output: 1.5V
Input Pulse Rise and Fall Times: 5ns
*INCLUDING SCOPE AND JIG CAPACITANCE
11 of 14