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W78L51 PDF даташит

Спецификация W78L51 изготовлена ​​​​«Winbond» и имеет функцию, называемую «8-BIT MICROCONTROLLER».

Детали детали

Номер произв W78L51
Описание 8-BIT MICROCONTROLLER
Производители Winbond
логотип Winbond логотип 

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W78L51 Даташит, Описание, Даташиты
W78L51
8-BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W78L51 microcontroller supplies a wider frequency and supply voltage range than most 8-bit
microcontrollers on the market. It is compatible with the industry standard 80C51 microcontroller
series.
The W78L51 contains four 8-bit bidirectional parallel ports, one extra 4-bit bit-addressable I/O port
(Port 4) and two additional external interrupts (INT2 , INT3 ), two 16-bit timer/counters, one watchdog
timer and a serial port. These peripherals are supported by a seven-source, two-level interrupt
capability. There are 128 bytes of RAM and an 4K byte mask ROM for application programs.
The W78L51 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
Supply voltage of 1.8V to 5.5V
DC-24 MHz operation
128 bytes of on-chip scratchpad RAM
4K bytes of on-chip mask ROM
64K bytes program memory address space
64K bytes data memory address space
Four 8-bit bidirectional ports
Two 16-bit timer/counters
One full duplex serial port
Seven-source, two-level interrupt capability
One extra 4-bit bit-addressable I/O port
Two additional external interrupts INT2 / INT3
Watchdog timer
EMI reduction mode
Built-in power management
Code protection
Packages:
DIP 40: W78L51-24
PLCC 44: W78L51P-24
QFP 44: W78L51F-24
Publication Release Date: January 1999
- 1 - Revision A2









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W78L51 Даташит, Описание, Даташиты
W78L51
PIN CONFIGURATIONS
40-Pin DIP (W78L51)
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
RXD, P3.0
TXD, P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
WR, P3.6
RD, P3.7
XTAL2
XTAL1
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 VDD
39 P0.0, AD0
38 P0.1, AD1
37 P0.2, AD2
36 P0.3, AD3
35 P0.4, AD4
34 P0.5, AD5
33 P0.6, AD6
32 P0.7, AD7
31 EA
30 ALE
29 PSEN
28 P2.7, A15
27 P2.6, A14
26 P2.5, A13
25 P2.4, A12
24 P2.3, A11
23 P2.2, A10
22 P2.1, A9
21 P2.0, A8
44-Pin PLCC (W78L51P)
/
I
N AAAA
T DDDD
3 0123
, ,,,,
P P P PP P PP P P
1 1 1 11 4V 0 0 0 0
. . . . . .D. . . .
4 3 2 10 2D 0 1 2 3
P1.5
P1.6
P1.7
RST
RXD, P3.0
INT2, P4.3
TXD, P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
6 5 4 3 2 1 44 43 42 41 40
7 39
8 38
9 37
10 36
11 35
12 34
13 33
14 32
15 31
16 30
17 29
18 19 20 21 22 23 24 25 26 27 28
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
P4.1
ALE
PSEN
P2.7, A15
P2.6, A14
P2.5, A13
PP X XVP PP P P P
33 TTS4 22 2 2 2
. . AAS. . . . . .
67 L L 0 01 2 3 4
, , 21
,, , , ,
/ / AA A A A
WR
89 1 1 1
RD
012
44-Pin QFP (W78L51F)
/
I
N AAAA
T DDDD
3 0123
, ,,,,
P P P PP P PP P P
1 1 1 11 4V 00 0 0
. . . . . . D. . . .
4 3 2 10 2D 01 2 3
P1.5
P1.6
P1.7
RST
RXD, P3.0
INT2, P4.3
TXD, P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
P4.1
ALE
PSEN
P2.7, A15
P2.6, A14
P2.5, A13
PP X X V PPP P P P
33 TTS422 2 2 2
. . AAS. . . . . .
67 L L 001 2 3 4
, , 21
,, , ,,
/ / AA A AA
WR
89 1 11
RD
0 12
-2-









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W78L51 Даташит, Описание, Даташиты
W78L51
PIN DESCRIPTION
P0.0P0.7
Port 0, Bits 0 through 7. Port 0 is a bidirectional I/O port. This port also provides a multiplexed low
order address/data bus during accesses to external memory.
P1.0P1.7
Port 1, Bits 0 through 7. Port 1 is a bidirectional I/O port with internal pull-ups.
P2.0P2.7
Port 2, Bits 0 through 7. Port 2 is a bidirectional I/O port with internal pull-ups. This port also provides
the upper address bits for accesses to external memory.
P3.0P3.7
Port 3, Bits 0 through 7. Port 3 is a bidirectional I/O port with internal pull-ups. All bits have alternate
functions, which are described below:
PIN
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
ALTERNATE FUNCTION
RXD Serial Receive Data
TXD Serial Transmit Data
INT0 External Interrupt 0
INT1 External Interrupt 1
T0 Timer 0 Input
T1 Timer 1 Input
WR Data Write Strobe
RD Data Read Strobe
P4.0P4.3
Another bit-addressable bidirectional I/O port P4. P4.3 and P4.2 are alternative function pins. It can
be used as general I/O pins or external interrupt input sources (INT2 / INT3 ).
EA
External Address Input, active low. This pin forces the processor to execute out of external ROM.
This pin should be kept low for all W78C31 operations.
RST
Reset Input, active high. This pin resets the processor. It must be kept high for at least two machine
cycles in order to be recognized by the processor.
Publication Release Date: January 1999
- 3 - Revision A2










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