P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 70
![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](/photos/41/53/415310/sot318-2_3d_sml.gif)
P8XC557E4
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
Datasheet
1.P8XC557E4.pdf
(72 pages)
- Current page: 70 of 72
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Philips Semiconductors
1999 Mar 02
Single-chip 8-bit microcontroller
dotted lines
are valid when RD or
WR are active
only active
during a read
from external
data memory
only active
during a write
to external
data memory
external
program
memory
fetch
read or
write of
external data
memory
PORT
OUTPUT
PORT
INPUT
SERIAL
PORT
CLOCK
Purchase of Philips I
to use the components in the I
I
code 9398 393 40011.
WR
XTAL1
ALE
RD
INPUT
PSEN
Port 2
Bus
(Port 0)
Port 2
Bus
(Port 0)
2
C specifications defined by Philips. This specification can be ordered using the
P1 P2
Int.
in
Int.
in
S1
P1 P2
address
A0–A7
address
A0–A7
address A8–A15
S2
One Machine Cycle
Figure 65. Instruction cycle timing
address A8–A15
P1 P2
2
S3
C components conveys a license under the Philips’ I
old data
P1 P2
Int.
in
Int.
in
S4
sampling time of I/O port pins during input (including INT0 and INT1)
P1 P2
address
A0–A7
address
A0–A7
S5
70
2
address A8–A15 or Port2 out
C system provided the system conforms to the
address A8–A15
P83C557E4/P80C557E4/P89C557E4
P1 P2
S6
P1 P2
Int.
in
S1
data output or data input
P1 P2
address
A0–A7
S2
One Machine Cycle
new data
address A8–A15
P1 P2
S3
P1 P2
Int.
in
S4
P1 P2
address
A0–A7
address
A0–A7
address A8–A15
address A8–A15
S5
P1 P2
S6
2
Product specification
C patent
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