p80c528efp NXP Semiconductors, p80c528efp Datasheet - Page 64

• Manufacturer Part Number: p80c528efp
• Description: 8-bit Microcontrollers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1997 Dec 15
handbook, full pagewidth
handbook, full pagewidth
8-bit microcontrollers
AC testing inputs are driven at 2.4 V for a logic 1 and 0.45 V for a logic 0. Timing measurements
are taken at 2.0 V for a logic 1 and 0.8 V for logic 0 see (a). The float state is defined as the point
at which a Port 0 pin sinks 3.2 mA or sources 400 A at the voltage test levels see (b).
See Table 36.
Fig.31 AC testing input, output waveform (a) and float waveform (b).
0.45 V
2.4 V
0.45 V
0.8 V
2.4 V
V IH1
t HIGH
Fig.32 External clock drive XTAL1.
2.0 V
0.8 V
V IH1
0.8 V
0.8 V
2.0 V
t LOW
test points
64
float
(a)
(b)
t r
t CK
0.8 V
V IH1
P83C524; P80C528; P83C528
2.0 V
0.8 V
2.0 V
0.8 V
V IH1
0.8 V
t f
MBC479
MBC480
0.45 V
2.4 V
Product specification