DataSheet.es    


PDF W78L801-24 Data sheet ( Hoja de datos )

Número de pieza W78L801-24
Descripción 8-BIT MICROCONTROLLER
Fabricantes Winbond 
Logotipo Winbond Logotipo



Hay una vista previa y un enlace de descarga de W78L801-24 (archivo pdf) en la parte inferior de esta página.


Total 20 Páginas

No Preview Available ! W78L801-24 Hoja de datos, Descripción, Manual

W78L801
8-BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W78L801 is an 8-bit microcontroller which can accommodate a wide range of supply voltages
with low power consumption. The instruction set for the W78L801 is fully compatible with the standard
8051. The W78L801 contains an 4K bytes Mask ROM; a 256 bytes RAM; four 8-bit bi-directional and
bit-addressable I/O ports; an additional 6-bit I/O port P4; two 16-bit timer/counters; a hardware
watchdog timer. These peripherals are supported by a twelve sources two-level interrupt capability.
The W78L801 does not contain serial port.
The W78L801 microcontroller has two power reduction modes, idle mode and power-down mode,
both of which are software selectable. The idle mode turns off the processor clock but allows for
continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power
consumption. The external clock can be stopped at any time and in any state without affecting the
processor.
FEATURES
Fully static design 8-bit CMOS microcontroller
Wide supply voltage of 1.8V to 5.5V
DC-24 MHz operation
256 bytes of on-chip scratchpad RAM
4 KB Mask-ROM
64 KB program memory address space
64 KB data memory address space
Four 8-bit bi-directional ports
Two 16-bit timer/counters
Watchdog Timer
Direct LED drive outputs
Twelve sources, two-level interrupt capability
Wake-up via external interrupts at Port 1
EMI reduction mode
Built-in power management
Code protection mechanism
Packages:
DIP 40: W78L801-24
PLCC 44: W78L801P-24
PQFP 44: W78L801F-24
Publication Release Date: February 1999
- 1 - Revision A3

1 page




W78L801-24 pdf
W78L801
I/O port. When the PUP bit in the POR register is set, the pins of Port 0 will perform a quasi-bi-
directional I/O port with internal pull-up that is structurally the same as Port 2. The high nibble of Port
3 (P3.4 to P3.7) can be selected to serve the direct LED displays drive outputs by setting the HDx bit
in the PO register. When the HDx bit is set, the corresponding pin P3.x can sink about 20mA current
for driving LED display directly. After reset, the POR register is cleared and the pins of Ports 0 and 3
are the same as those of the standard 80C31. The POR register is shown below.
Port Options Register
Bit: 7
6
EP6 EP5
Mnemonic: POR
5
-
432
HD7 HD6 HD5
Address: 86H
1
HD4
0
PUP
PUP : Enable Port 0 weak pull-up.
HD4-7: Enable pins P3.4 to P3.7 individually with High Drive outputs.
EP5 : Enable P4.5. To set this bit shifts ALE pin to the alternate function P4.5.
EP6 : Enable P4.6. To set this bit shifts PSEN pin to the alternate function P4.6
Port 4
The W78L801 has one additional bit-addressable I/O port P4 in which the port address is D8H. The
Port 4 contains seven bits; P4.0 to P4.3 are only available on 44-pin PLCC/QFP package; P4.5 and
P4.6 are the alternate function corresponding to pins ALE, PSEN . When program is running in the
internal memory without any access to external memory, ALE and PSEN may be individually
configured to the alternate functions P4.5 and P4.6 that serve as general purpose I/O pins. To enable
I/O port P4.5 and P4.6, the bits EP5 and EP6 in the POR register must be set. During reset, the ALE
and PSEN perform as in the standard 80C32. The alternate functions P4.5 and P4.6 must be
enabled by software. Care must be taken with the ALE pins when configured as the alternate
functions. The ALE will emit pulses until either the EP5 bit in POR register or AO bit in AUXR register
is set to 1. i.e. User's applications should elude the ALE pulses before software configure it with I/O
port P4.5.
Port 4
Bit: 7
6
- P4.6
Mnemonic: P4
5
P4.5
432
- P4.3 P4.2
Address: D8H
1
P4.1
0
P4.0
Interrupt System
The W78L801 has twelve interrupt sources: INT0 and INT1; Timer 0,1; INT2 to INT9. Each interrupt
vectors to a specific location in program memory for its interrupt service routine. Each of these
sources can be individually enabled or disabled by setting or clearing the corresponding bit in Special
Function Register IE0 and IE1. The individual interrupt priority level depends on the Interrupt Priority
Register IP0 and IP1. Additional external interrupts INT2 to INT9 are level sensitive and may be used
to awake the device from power down mode. The Port 1 interrupts can be initialized to either active
HIGH or LOW via setting the Interrupt Polarity Register IX. The IRQ register contains the flags of Port
Publication Release Date: February 1999
- 5 - Revision A3

5 Page





W78L801-24 arduino
W78L801
ABSOLUTE MAXIMUM RATINGS
PARAMETER
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
SYMBOL
VDDVSS
VIN
TA
TST
MIN.
-0.3
VSS -0.3
0
-55
MAX.
+6.0
VDD +0.3
70
+150
UNIT
V
V
°C
°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
DC CHARACTERISTICS
Vss = 0V ; TA = 25° C; unless otherwise specified.
PARAMETER
SYM.
Operating Voltage
Operating Current
VDD
IDD
Idle Current
Power Down Current
Input Current
P1, P2, P3, P4
Input Current
RST
Input Leakage Current
P0, EA
Logic 1-to-0 Transition
Current
P1, P2, P3, P4
IIDLE
IPWDN
Input
IIN
IIN2
ILK1
ITL
SPECIFICATION
TEST CONDITIONS
MIN. MAX. UNIT
2.2 5.5 V
- 20 mA VDD = 5.5V, 16 MHz, no load,
RST = 1
- 3 mA VDD = 2.2V, 16 MHz, no load,
RST = 1
- 6 mA VDD = 5.5V, 16 MHz, no load
- 1.5 mA VDD = 2.2V, 16 MHz, no load
- 50 µA VDD = 5.5V, no load
- 30 µA VDD = 2.2V, no load
-50
-60
-10
-500
+10
+300
+10
-200
µA VDD = 5.5V
VIN = 0V or VDD
µA VDD = 5.5V
0 < VIN< VDD
µA VDD = 5.5V
0V< VIN < VDD
µA VDD = 5.5V
VIN = 2V
- 11 -
Publication Release Date: February 1999
Revision A3

11 Page







PáginasTotal 20 Páginas
PDF Descargar[ Datasheet W78L801-24.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
W78L801-248-BIT MICROCONTROLLERWinbond
Winbond

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar