User's Manual

DFZM-E72xx
Data Sheet Sheet 26 of 40 Sep 16, 2013
Proprietary Information and Specifications are Subject to Change
Table 5-4: Digital I/O Specifications
Parameter Test conditions Min Typ Max Unit
Low Schmitt switching threshold
VSWIL, Schmitt input threshold going from high to
low
0.42 x
VCC
0.5 x
VCC
V
High Schmitt switching threshold
VSWIH, Schmitt input threshold going from low to
high
0.62 x
VCC
0.80 x
VCC
V
Input current for logic 0 IIL -1.0 uA
Input current for logic 1 IIH +1.0 uA
Input pull-up resistor value RIPU, Pull-up value while the chip is not reset 24 29 34 kΩ
Input pull-down resistor value RIPURESET, Pull-up value while the chip is reset 12 14.5 17 kΩ
Table 5-5: nRESET pin Specifications
5-5.Wake-up and Timing
Test Conditions: T
A
=25 ºC, VCC=3.0V
Parameter Test conditions Min Typ Max Unit
System wake time from deep sleep
From wakeup event to first ARM® Cortex-M3 instruction
running from 6 MHz internal RC clock Includes supply ramp
time and oscillator startup time
110 us
Shutdown time going into deep sleep From last ARM® Cortex-M3 instruction to deep sleep mode 5 us
Table 5-6: Wake-up and Timing