P8XC557E4 NXP Semiconductors, P8XC557E4 Datasheet - Page 69
![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: 69 of 72
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Philips Semiconductors
1999 Mar 02
WRITE TO SBUF
INSTRUCTION
(INPUT/OUTPUT)
INPUT DATA
OUTPUT DATA
(INPUT/OUTPUT)
CLEAR RI
Single-chip 8-bit microcontroller
CLOCK
SDA
SCL
START or repeated START condition
ALE
t
HD;STA
0
t
FD
t
QVXH
t
t
LOW
RC
1
0
t
VALID
t
XLXL
RD
t
HIGH
t
XHDV
Figure 64. UART waveforms in Shift Register Mode
t
XHQX
2
1
t
FC
VALID
Figure 63. Timing SIO1 (I
t
SU;DAT1
t
XHDX
3
2
VALID
t
HD;DAT
69
4
P83C557E4/P80C557E4/P89C557E4
3
VALID
2
C) Interface
repeated START condition
STOP condition
5
4
VALID
t
SP
6
5
t
SU;DAT2
VALID
t
SU;STA
t
SU; STO
0.7 V
0.3 V
t
SU;DAT3
7
DD
DD
6
t
VALID
BUF
START condition
Product specification
0.7 V
0.3 V
8
7
DD
DD
SET TI
VALID
SET RI
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