DS1673 Datasheet, PDF (18/20 Pages) Dallas Semiconductor – Portable System Controller

NOTES:
DS1673
1. All voltages are referenced to ground.
2. Logic 1 voltages are specified at a source current of 0.4 mA at V_CC=3.0V, V_OH=V_CC for capacitive
loads.
3. Logic 0 voltages are specified at a sink current of 1.5 mA at V_CC=3.0, V_OL=GND for capacitive
loads.
4. I_CCA is specified with outputs open, CS set to a logic 1, SCLK=500 kHz, oscillator enabled, and D/A
converter enabled.
5. I_ADC is specified with CS, V_CCO open and I/O, SCLK at logic zero. A/D converter is enabled.
6. I_CCS is specified with CS, V_CCO open and I/O, SCLK at logic zero. A/D converter is disabled.
7. CS has a 40 kΩ pull-down resistor to ground.
8. Measured at V_IH=2.0V or V_IL=0.8V and 10 ns maximum rise and fall time.
9. Measured at V_OH=2.4V or V_OL=0.4V.
10. Load capacitance= 25 pF.
11. I_CCO=100 mA, V_CC > V_CCTP.
12. V_CCO switchover from V_CC to V_BAT occurs when V_CC drops below the lower of V_CCSW and V_BAT.
13. Current from V_CC input pin to V_CCO output pin.
14. Current from V_BAT input pin to V_CCO output pin.
15. Timebase is generated by very accurate crystal oscillator. Accuracy of this time period is based on
the crystal that is used. A typical crystal with a specified load capacitance of 6 pF will provide an
accuracy within ±100 ppm over the 0°C to 70°C temperature range.
16. If the EOSC bit in the Control Register is set to a logic 1, t_RPU is equal to 250 ms plus the start-up
time of the crystal oscillator.
18 of 20