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參數(shù)資料
| 型號(hào)： | W78E62B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 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)： | 1/34頁(yè) |
| 文件大小： | 393K |
| 代理商： | W78E62B |
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W78E62B
8-BIT MICROCONTROLLER
Publication Release Date: June 1999
- 1 -
Revision A1
GENERAL DESCRIPTION
The W78E62B is an 8-bit microcontroller which has an in-system programmable MTP-ROM for
firmware updating. The instruction set of the W78E62B is fully compatible with the standard 8052.
The W78E62B contains a 64K bytes of main MTP-ROM and a 4K bytes of auxiliary MTP-ROM which
allows the contents of the 64KB 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 W78E62B allows the program memory to be programmed and read
electronically. Once the code is confirmed, the user can protect the code for security.
The W78E62B 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 up to 40 MHz.
64K bytes of in-system programmable MTP-ROM for Application Program (APROM).
4K bytes of auxiliary MTP-ROM for Loader Program (LDROM).
Low standby current at full supply voltage.
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.
Build-in 74373 and 74244 logical functions on Port 2.(software programmable)
Three 16-bit timer/counters
One full duplex serial port
Eight-sources, two-level interrupt capability
Built-in power management
Code protection
PACKAGE
PLCC 44: W78E62BP-40
LQFP 48: W78E62BD-40
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