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PDF PCF84CxxxA Data sheet ( Hoja de datos )
| Número de pieza | PCF84CxxxA | |
| Descripción | 8-Bit Microcontrollers | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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INTEGRATED CIRCUITS
DATA SHEET
www.DataSheet4U.com
PCF84CxxxA family
8-bit microcontrollers
Product specification
Supersedes data of May 1994
File under Integrated Circuits, IC14
1996 Nov 22
1 page  
Philips Semiconductors
8-bit microcontrollers
www.DataSheet4U.com
Product specification
PCF84CxxxA family
5 PINNING INFORMATION
5.1 Pinning
For individual pinning configurations consult the data
sheet of the specific device.
5.2 Pin description
Table 1 describes the common functions of the devices.
For full details of pin descriptions consult the data sheet of
the specific device.
Table 1 Common functions
SYMBOL
VSS
VDD
XTAL1
XTAL2
RESET
INT/T0
T1
P0.0 to P0.7
P1.0 to P1.7
P2.0 to P2.2
SDA/P2.3
SCLK
TYPE
P
P
I
O
I
I
I
I/O
I/O
I/O
I/O
I/O
DESCRIPTION
ground
positive supply voltage
crystal oscillator/external clock input
crystal oscillator output
Reset input
Interrupt/Test 0 input
Test 1/count input of 8-bit timer/event counter 1
Port 0: quasi-bidirectional I/O lines
Port 1: quasi-bidirectional I/O lines
Port 2: quasi-bidirectional I/O lines
bidirectional data line of the I2C-bus interface/Port 2: quasi-bidirectional I/O line
bidirectional clock line of the I2C-bus interface
1996 Nov 22
5
5 Page 
Philips Semiconductors
8-bit microcontrollers
www.DataSheet4U.com
Product specification
PCF84CxxxA family
handbook, full pagewidth
RESET
FETCH
INSTRUCTION
RETR?
N
Y
CLEAR IIP
AND RETURN
TO MAIN PROGRAM
EN I?
OR
EN TCNT I?
OR
EN SI?
Y
ENABLE
RELEVANT
INTERRUPT
NN
DIS I?
Y
DISABLE EI
CLEAR FILTER
LATCH AND EIF
DIS SI?
Y
DISABLE
SI
N DIS N
TCNT I?
Y
DISABLE TI
AND CLEAR
TIF
EXECUTE
INSTRUCTION
TIMER
OVERFLOW?
Y
N
SET TF
TI
ENABLED?
Y
N
SET TIF
1996 Nov 22
INT / TO
Y
N
EIF
SET?
N
FILTER
LATCH
SET?
N
Y
Y
Y IIP
SET?
SET FILTER
LATCH
N EI Y
ENABLED
SET EIF
CLEAR FILTER
LATCH
N
Y
PIN = 0?
Y
IIP
SET?
N
N
TIF SET?
N SI Y
ENABLED?
Y
N
SET IIP
CLEAR TIF
SET IIP
SET IIP
CLEAR EIF
CALL 007
CALL 005
CALL 003
MLA695
Fig.8 Flow chart illustrating CPU control in the presence of interrupts.
11
11 Page | ||
| Páginas | Total 36 Páginas | |
| PDF Descargar | [ Datasheet PCF84CxxxA.PDF ] | |
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