MC68HC16Z1CAG16 Datasheet, PDF (302/500 Pages) Freescale Semiconductor, Inc – M68HC16Z Series users manual

Freescale Semiconductor, Inc.
13. The base configuration of the MC68HC16Z1, MC68CK16Z1, MC68HC16Z4, and the MC68CK16Z4 requires
a 32.768 kHz crystal reference. The base configuration of the MC68CM16Z1, MC68HC16Z2, and the
MC68HC16Z3 requires a 4.194 MHz crystal reference.
14. The RAM module will not switch into standby mode as long as V_SB does not exceed V_DD by more than 0.5
volts. The RAM array cannot be accessed while the module is in standby mode.
15. When V_SB is more than 0.3 V greater than V_DD, current flows between the V_STBY and V_DD pins, which
causes standby current to increase toward the maximum transient condition specification. System noise on
the V_DD and V_STBY pin can contribute to this condition.
16. Power dissipation is measured with the appropriate system clock frequency, all modules active. Power dissipation
can be calculated using the following expression:
P_D = Maximum V_DD (I_DD + I_DDSYN + I_SB) + Maximum V_DDA (I_DDA)
I_DD includes supply currents for all device modules powered by V_DD pins.
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ELECTRICAL CHARACTERISTICS
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M68HC16 Z SERIES
USER’S MANUAL