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PDF W78E58 Data sheet ( Hoja de datos )
| Número de pieza | W78E58 | |
| Descripción | 8 BIT MICROCONTROLLER | |
| Fabricantes | Winbond | |
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W78E58
GENERAL DESCRIPTION
8-BIT MICROCONTROLLER
The W78E58 is an 8-bit microcontroller that is functionally compatible with the W78C58, except that
the mask ROM is replaced by a flash EEPROM with a size of 32 KB. To facilitate programming and
verification, the flash EEPROM inside the W78E58 allows the program memory to be programmed
and read electronically. Once the code is confirmed, the user can protect the code for security.
The W78E58 microcontroller supplies a wider frequency range than most 8-bit microcontrollers on the
market. It is functionally compatible with the industry-standard 80C52 microcontroller series, except
that one extra 4-bit bit-addressable I/O port(Port 4) and two additional external interrupts (INT2 ,
INT3 ).
The W78E58 contains four 8-bit bi-directional and bit-addressable I/O ports, three 16-bit
timer/counters, and a serial port. These peripherals are supported by a eight-source, two-level
interrupt capability. There are 256 bytes of RAM and an 32 KB flash EEPROM for application
programs.
The W78E58 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
• 8-bit CMOS microcontroller
• Fully static design
• Low standby current at full supply voltage
• DC-40 MHz operation
• 256 bytes of on-chip scratchpad RAM
• 32 KB electrically erasable/programmable EPROM
• 64 KB program memory address space
• 64 KB data memory address space
• Four 8-bit bidirectional ports
• One extra 4-bit bit-addressable I/O port, additional INT2 / INT3
(available on 44-pin PLCC/QFP package)
• Three 16-bit timer/counters
• One full duplex serial port
• Boolean processor
• Eight-source, two-level interrupt capability
• Built-in power management
• Code protection mechanism
• Packages:
− DIP 40: W78E58-16/24/40
− PLCC 44: W78E58P-16/24/40
− QFP 44: W78E58F-16/24/40
− TQFP 44: W78E58M-16/24/40
Publication Release Date: November 1997
- 1 - Revision A2
1 page  
W78E58
Normal
Flash
Crystal 1. This is the crystal oscillator input. This pin may be driven by an external
clock.
Connect to VSS.
XTAL2
MODE
Normal
Flash
DESCRIPTION
Crystal 2. This is the crystal oscillator output. It is the inversion of XTAL1.
No function in this mode.
VSS, VCC
Power Supplies. These are the chip ground and positive supplies.
Publication Release Date: November 1997
- 5 - Revision A2
5 Page 
W78E58
Program Operation
This operation is used to program data to the flash EEPROM and the option bits. Programming is
initiated when VPP reaches VCP (12.5V) level, CE is set to low, and OE is set to high.
Program Verify Operation
All data must be checked after programming. This operation should be performed after each byte is
programmed, and it will ensure a substantial program margin.
OPERATION
P3.0
(A9
CTRL)
P3.1
(A13
CTRL)
P3.2
(A14
CTRL)
P3.3
(OE
CTRL)
P3.6
( CE )
P3.7
( OE )
EA
(VPP)
P2, P1
P0 NOTES
(A15 TO A0) (D7 TO D0)
Read
VIL
VIL
VIL
VIL
VIL
VIL
VIH Address
Data Out
1, 2
Program
VIL VIL VIL VIL VIL VIH VCP Address Data In
1, 2
Program Verify
VIL
VIL
VIL
VIL
VIH
VIL VCP Address Data Out
3
Notes:
1. During all of these operations, RST = VIH, ALE = VIL, and PSEN = VIH.
2. VCP = 12V, VIH = VDD, VIL = Vss.
3. The program verify operation should follow the programming operaion.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN.
MAX.
UNIT
DC Power Supply
Input Voltage
Operating Temperature
Storage Temperature
VDD−VSS
VIN
TA
TST
-0.3
VSS -0.3
0
-55
+7.0
VDD +0.3
70
+150
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.
A0 to A7
V IL
V IL
V IL
V IL
V IL
V IH
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
+5V
V DD
P0
EA/Vpp
ALE
RST
PSEN
P2
PGM DATA
V CP
V IL
V IH
V IH
A8 to A15
Programming Configuration
A0 to A7
V IL
V IL
V IL
V IL
V IH
V IL
P1
P3.0
P3.1
P3.2
P3.3
P3.6
P3.7
X'tal1
X'tal2
Vss
+5V
V DD
P0
EA/Vpp
ALE
RST
PSEN
P2
PGM DATA
V CP
V IL
V IH
V IH
A8 to A15
Programming Verification
- 11 -
Publication Release Date: November 1997
Revision A2
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet W78E58.PDF ] | |
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