Datasheet > W78E62B

W78E62B

更新时间： 2024-11-18 03:54:59

品牌	Logo	应用领域
华邦 - WINBOND		微控制器
页数	文件大小	规格书
34页	375K
描述
8-BIT MICROCONTROLLER

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W78E62B 数据手册

W78E62B

8-BIT MICROCONTROLLER

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

Publication Release Date: June 1999

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Revision A1

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