80C453 Datasheet, PDF (19/23 Pages) NXP Semiconductors – CMOS single-chip 8-bit microcontrollers

Philips Semiconductors
CMOS single-chip 8-bit microcontrollers
Preliminary specification
80C453/83C453/87C453
V_CC–0.5
0.45V
0.7V_CC
0.2V_CC–0.1
t_CHCL
t_CLCX
t_CHCX
t_CLCH
t_CLCL
Figure 17. External Clock Drive
SU00009
V_CC–0.5
0.45V
0.2V_CC+0.9
0.2V_CC–0.1
NOTE:
AC inputs during testing are driven at V_CC –0.5 for a logic ‘1’ and 0.45V for a logic ‘0’.
Timing measurements are made at V_IH min for a logic ‘1’ and V_IL max for a logic ‘0’.
Figure 18. AC Testing Input/Output
SU00717
V_LOAD
V_LOAD+0.1V
V_LOAD–0.1V
TIMING
REFERENCE
POINTS
V_OH–0.1V
V_OL+0.1V
NOTE:
For timing purposes, a port is no longer floating when a 100mV change from
load voltage occurs, and begins to float when a 100mV change from the loaded
V_OH/V_OL level occurs. I_OH/I_OL ≥ ±20mA.
SU00718
Figure 19. Float Waveform
30
MAX ACTIVE MODE
25
20
I_CC mA 15
10
TYP ACTIVE MODE
5
MAX IDLE MODE
TYP IDLE MODE
4MHz 8MHz 12MHz 16MHz
FREQ AT XTAL1
VALID ONLY WITHIN FREQUENCY SPECIFICATIONS OF THE DEVICE UNDER TEST.
Figure 20. I_CC vs. FREQ
SU00092
1996 Aug 15
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