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W78E65 PDF даташит

Спецификация W78E65 изготовлена ​​​​«Winbond» и имеет функцию, называемую «8-Bit Microcontroller».

Детали детали

Номер произв W78E65
Описание 8-Bit Microcontroller
Производители Winbond
логотип Winbond логотип 

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W78E65 Даташит, Описание, Даташиты
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W78E65 Data Sheet
8-BIT MICROCONTROLLER
Table of Contents-
1. GENERAL DESCRIPTION ......................................................................................................... 3
2. FEATURES ................................................................................................................................. 3
3. PIN CONFIGURATIONS ............................................................................................................ 4
4. PIN DESCRIPTION..................................................................................................................... 5
5. BLOCK DIAGRAM ...................................................................................................................... 6
6. FUNCTIONAL DESCRIPTION ................................................................................................... 6
6.1 RAM ................................................................................................................................ 6
6.2 Timers 0, 1, and 2........................................................................................................... 7
6.2.1 Timer 2 Output .................................................................................................................7
6.3 Clock ............................................................................................................................... 8
6.3.1 Crystal Oscillator ..............................................................................................................8
6.3.2 External Clock ..................................................................................................................8
6.4 Power Management........................................................................................................ 8
6.4.1 Idle Mode..........................................................................................................................8
6.4.2 Power-down Mode.....D...a..t.a..S...h..e..e..t..4..U.....c..o..m..........................................................................8
6.4.3 Reduce EMI Emission ......................................................................................................8
6.5 Reset............................................................................................................................... 9
6.5.1 W78E65 Special Function Registers (SFRs) and Reset Values.......................................9
6.6 Port 4 ............................................................................................................................ 10
6.6.1 Port Options Register .....................................................................................................10
6.6.2 INT2 / INT3 ...................................................................................................................10
6.6.3 Port 4 Base Address Registers.......................................................................................12
6.7 Pulse Width Modulated Outputs (PWM)....................................................................... 14
6.8 Watchdog Timer ........................................................................................................... 17
6.9 In-System Programming (ISP) Mode............................................................................ 19
6.9.1 In-System Programming Control Register (CHPCON) ...................................................20
6.10 Software Reset ............................................................................................................. 21
6.11 H/W Reboot Mode (Boot from LD FLASH EPROM) .................................................... 21
6.12 Security ......................................................................................................................... 24
7. ELETRICAL CHARACTERISTICS ........................................................................................... 25
7.1 Absolute Maximum Ratings .......................................................................................... 25
7.2 DC Characteristics........................................................................................................ 25
7.3 AC Characteristics ........................................................................................................ 27
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Publication Release Date: August 25, 2005
- 1 - Revision A6
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W78E65
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8. TIMING WAVEFORMS ............................................................................................................. 28
8.1 Program Fetch Cycle .................................................................................................... 28
8.2 Data Read Cycle........................................................................................................... 29
8.3 Data Write Cycle........................................................................................................... 30
8.4 Port Access Cycle......................................................................................................... 31
9. TYPICAL APPLICATION CIRCUIT........................................................................................... 32
9.1 External Program Memory and Crystal ........................................................................ 32
9.2 Expanded External Data Memory and Oscillator ......................................................... 33
10. PACKAGE DIMENSIONS ......................................................................................................... 33
10.1 44-pin PLCC ................................................................................................................. 33
11. APPLICATION NOTE ............................................................................................................... 34
11.1 In-system Programming Software Examples ............................................................... 34
12. REVISION HISTORY ................................................................................................................ 39
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W78E65
1. GENERAL DESCRIPTION
The W78E65 is an 8-bit microcontroller which has an in-system programmable Flash EPROM for
firmware updating. The instruction set of the W78E65 is fully compatible with the standard 8052. The
W78E65 contains a 64K bytes of main ROM and a 4K bytes of auxiliary ROM which allows the
contents of the 64KB main ROM to be updated by the loader program located at the 4KB auxiliary
ROM; 256+1K bytes of on-chip RAM; four 8-bit bi-directional and bit-addressable I/O ports; an
additional 4-bit port P4; three 16-bit timer/counters; a serial port. These peripherals are supported by a
eight sources two-level interrupt capability. To facilitate programming and verification, the ROM inside
the W78E65 allows the program memory to be programmed and read electronically. Once the code is
confirmed, the user can protect the code for security.
The W78E65 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.
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2. FEATURES
Fully static design 8-bit CMOS microcontroller
64K bytes of in-system programmable Flash EPROM for Application Program (AP FLASH
EPROM)
4K bytes of auxiliary ROM for Loader PDraotgarSahmee(Lt4DUF.cLoAmSH EPROM)
256+1K bytes of on-chip RAM. (Including 1K bytes of AUX-RAM, software selectable)
64K bytes program memory address space and 64K bytes data memory address space
ALE off software selectable.
Four 8-bit bi-directional ports; Port 0 has internal pull-up resisters enabled by software
One 4-bit multipurpose programmable port (I/O, interrupt, Chip select function)
Three 16-bit timer/counters
One full duplex serial port
5 channel PWM
Watchdog timer
Software Reset
P1.0 T2 programmable clock out
Eight-sources, two-level interrupt capability
Built-in power management
Code protection
Packaged in
DIP 44: W78E65-40
PLCC 44: W78E65P-40
Lead Free(RoHS) PLCC 44: W78E065A40PL
Lead Free(RoHS) DIP 40: W78E065A40DL
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Publication Release Date: August 25, 2005
- 3 - Revision A6
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