80C32 Datasheet, PDF (18/20 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontrollers

80C32/80C52
External Clock Drive Characteristics (XTAL1)
SYMBOL
FCLCL
TCLCL
TCHCX
TCLCX
TCLCH
TCHCL
PARAMETER
Oscillator Frequency
Oscillator period
High Time
Low Time
Rise Time
Fall Time
MIN
22.7
5
5
External Clock Drive Waveforms
MAX
44
5
5
MATRA MHS
UNIT
MHz
ns
ns
ns
ns
ns
AC Testing Input/Output Waveforms
AC inputs during testing are driven at Vcc – 0.5 for a logic “1” and 0.45 V for a logic “0”. Timing measurements are
made at VIH min for a logic “1” and VIL max for a logic “0”.
Float Waveforms
For timing purposes as port pin is no longer floating when a 100 mV change from load voltage occurs and begins to
float when a 100 mV change from the loaded VOH/VOL level occurs. Iol/IoH ≥ ± 20 mA.
18
Rev. E (31/08/95)