參數(shù)資料
型號(hào)： W87LE58
元件分類： 8位微控制器
英文描述： 8-BIT MICROCONTROLLER
中文描述： 8位微控制器
文件頁(yè)數(shù)： 1/31頁(yè)
文件大?。?/td> 426K
代理商： W87LE58
Preliminary W78LE58
8-BIT MICROCONTROLLER
Publication Release Date: June 2000
- 1 -
Revision A1
GENERAL DESCRIPTION
The W78LE58 is an 8-bit microcontroller which has an in-system programmable MTP-ROM for
firmware updating. The instruction set of the W78LE58 is fully compatible with the standard 8052.
The W78LE58 contains a 32K bytes of main MTP-ROM and a 4K bytes of auxiliary MTP-ROM which
allows the contents of the 32KB main MTP-ROM to be updated by the loader program located at the
4KB auxiliary MTP-ROM; 512 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 MTP-ROM inside the W78LE58 allows the program memory to be programmed and read
electronically. Once the code is confirmed, the user can protect the code for security.
The W78LE58 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
32K bytes of in-system programmable MTP-ROM for Application Program (APROM)
4K bytes of auxiliary MTP-ROM for Loader Program (LDROM)
512 bytes of on-chip RAM. (including 256 bytes of AUX-RAM, software selectable)
64K bytes program memory address space and 64K bytes data memory address space
Four 8-bit bi-directional ports
One 4-bit multipurpose programmable port
Three 16-bit timer/counters
One full duplex serial port
Eight-sources, two-level interrupt capability
Built-in power management
Code protection
Packaged in
DIP 40: W78LE58-24
PLCC 44: W78LE58P-24
QFP 44: W78LE58F-24
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