P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 4

• Manufacturer Part Number: P8XC557E4
• Description: The P80C557E4/P83C557E4/P89C557E4 (hereafter generically referred to as P8xC557E4) single-chip 8-bit microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1999 Mar 02
Single-chip 8-bit microcontroller
*) only P89C557E4 with alternate function WE
CMT0
CMT1
ADC0-7
CMSR0-5
RSTOUT
ALE/WE
RSTIN
ADEXS
XTAL1
XTAL2
PWM0
PWM1
AVref+
AVref–
PSEN
AV
AV
SDA
SCL
EW
V
V
EA
DD
SS
DD
SS
*
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Figure 2. Functional diagram
4
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
P83C557E4/P80C557E4/P89C557E4
XTAL3
XTAL4
SELXTAL1
RXD/DATA
TXD/CLOCK
INT0
INT1
T0
T1
WR
RD
CT0I/INT2
CT1I/INT3
CT2I/INT4
CT3I/INT5
T2
RT2
0
1
2
3
4
5
6
7
HIGH ORDER ADDRESS BUS
A8–15
LOW ORDER ADDRESS
AND DATA BUS AD0–7
Product specification