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PDF P87CL881 Data sheet ( Hoja de datos )
| Número de pieza | P87CL881 | |
| Descripción | Low voltage 8-bit microcontroller | |
| Fabricantes | Philips Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
P87CL881
Low voltage 8-bit microcontroller
Preliminary specification
File under Integrated Circuits, IC20
1997 Dec 12
http://www.Datasheet4U.com/
1 page  
Philips Semiconductors
Low voltage 8-bit microcontroller
5 PINNING INFORMATION
5.1 Pinning
Preliminary specification
P87CL881
handbook, full pagewidth
P1.5 1
P1.6 2
P1.7 3
RST 4
P3.0 5
Vpp/PORENABLE 6
P3.1 7
P3.2 8
P3.3 9
P3.4 10
P3.5 11
P87CL881
33 P0.4/AD4
32 P0.5/AD5
31 P0.6/AD6
30 P0.7/AD7
29 EA
28 EW
27 ALE
26 PSEN
25 P2.7/A15
24 P2.6/A14
23 P2.5/A13
MBK526
1997 Dec 12
Fig.2 Pin configuration.
5
http://www.Datasheet4U.com/
5 Page 
Philips Semiconductors
Low voltage 8-bit microcontroller
Preliminary specification
P87CL881
Table 3 Port Configuration Register settings
MODE(1)
0
1
2
3
PnCFGA
0
1
0
1
PnCFGB
PORT OUTPUT CONFIGURATION
NORMAL PORTS
I2C-BUS PORTS (P1.6 AND P1.7)
0 open-drain
open-drain
0 quasi-bidirectional
open-drain
1 high-impedance
high-impedance
1 push-pull
open-drain
Note
1. Mode changes may cause glitches to occur during transitions. When modifying both registers, WRITE instructions
should be carried out consecutively.
Table 4 Special Function Registers for Port configurations/data
REGISTER NAME
Port P0 Configuration A Register
Port P0 Configuration B Register
Port P0 output data Register
Port P1 Configuration A Register
Port P1 Configuration B Register
Port P1 output data Register
Port P2 Configuration A Register
Port P2 Configuration B Register
Port P2 output data Register
Port P3 Configuration A Register
Port P3 Configuration B Register
Port P3 output data Register
REGISTER
MNEMONIC
P0CFGA
P0CFGB
P0
P1CFGA
P1CFGB
P1
P2CFGA
P2CFGB
P2
P3CFGA
P3CFGB
P3
SFR ADDRESS
(HEX)
8E
8F
80
9E
9F
90
AE
AF
A0
BE
BF
B0
STATE AFTER RESET
1111 1111
0000 0000
1111 1111
0000 1000
0111 1111
0111 1111
1111 1111
0000 0000
1111 1111
1111 1110
1111 1111
1111 1111
1997 Dec 12
11
http://www.Datasheet4U.com/
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet P87CL881.PDF ] | |
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