P87C554 NXP Semiconductors, P87C554 Datasheet - Page 71

• Manufacturer Part Number: P87C554
• Description: The P87C554 Single-Chip 8-Bit Microcontroller is manufactured inan advanced CMOS process and is a derivative of the 80C51microcontroller family
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2002 Mar 25
80C51 8-bit microcontroller – 12 clock operation
16K/512 OTP/RAM, 8 channel 10-bit A/D, I
capture/compare, high I/O
(INPUT/OUTPUT)
(INPUT/OUTPUT)
SDA
SCL
START or repeated START condition
t
HD;STA
t
FD
NOTE:
The float state is defined as the point at which a port 0 pin sinks 3.2mA or sources 400 A at the voltage test levels.
t
t
LOW
RC
NOTE:
AC inputs during testing are driven at 2.4V for a logic ‘1’ and 0.45V for a logic ‘0’.
Timing measurements are made at 2.0V for a logic ‘1’ and 0.8V for a logic ‘0’.
t
RD
t
0.45V
HIGH
2.4V
0.45V
2.4V
Figure 55. AC Testing Input, Float Waveform
t
Figure 56. Timing SIO1 (I
FC
Figure 54. AC Testing Input/Output
t
SU;DAT1
2
2.0V
0.8V
C, PWM,
2.0V
0.8V
t
HD;DAT
Test Points
69
Float
2
C) Interface
2.0V
0.8V
repeated START condition
STOP condition
2.0V
0.8V
SU00215
2.4V
t
0.45V
SU;DAT2
t
SU;STA
SU00216
t
SU;STO
0.7 V
0.3 V
t
SU;DAT3
CC
CC
t
BUF
0.7 V
0.3 V
START condition
P87C554
CC
CC
Product data
SU00107A