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P80C557E4EFB
Single-chip 8-bit microcontroller
Philips Electronics
P80C557E4EFB Datasheet PDF : 72 Pages
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Philips Semiconductors
Single-chip 8-bit microcontroller
4. PINNING
Product specification
P83C557E4/P80C557E4/P89C557E4
AV
ref–
1
AV
ref+
2
AV
SS
3
A
1
V
DD1
4
P5.7/ADC7 5
P5.6/ADC6 6
P5.5/ADC5 7
P5.4/ADC4 8
P5.3/ADC3 9
P5.2/ADC2 10
P5.1/ADC1 11
P5.0/ADC0 12
V
SS1
13
V
DD1
14
ADEXS 15
PWM0 16
PWM1
17
EW
18
P4.0/CMSR0 19
P4.1/CMSR1 20
P4.2/CMSR2 21
P4.3/CMSR3 22
RSTOUT 23
P4.4/CSMR4 24
P8xC557E4
64
ALE/WE *
63
PSEN
62
P2.7/A15
61
P2.6/A14
60
P2.5/A13
59
P2.4/A12
58 P2.3/A11
57
P2.2/A10
56
P2.1/A9
55 P2.0/A8
54
V
SS3
53
V
DD3
52 XTAL1
51
XTAL2
50
n.c.
49
n.c.
48
P3.7/RD
47
P3.6/WR
46
P3.5/T1
45
P3.4/T0
44
P3.3/INT1
43
P3.2/INT0
42
P3.1/TXD
41
P3.0/RXD
n.c. = not connected
* = only P89C557E4 with alternate function WE
Figure 3. Pinning diagram for QFP80 (SOT318)
1999 Mar 02
5
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