Z86C21屬于開發(fā)板套件編程器的可編程適配器插座。由Zilog, Inc.制造生產(chǎn)的Z86C21可編程適配器，插座該系列產(chǎn)品旨在簡化與微控制器和可編程振蕩器等器件的電氣連接，這些器件必須在使用前進(jìn)行電子配置。此類器件通常在產(chǎn)品開發(fā)過程中使用，或者用于允許將通用配置工具與各種物理封裝的可編程器件一起使用，通常設(shè)計(jì)成允許無損插拔所要編程的器件。

GENERAL DESCRIPTION

The Z86C21 microcontroller is a member of the Z8 single-chip microcontroller family with 8 Kbytes of ROM and 236 bytes of RAM. The device is packaged in a 40-pin DIP, 44-pin PLCC, or a 44-pin QFP with a ROMless pin option available on the 44-pin versions only. With the ROM/ROMless feature selectively, the Z86C21 offers both external memory and preprogrammed ROM, making it wellsuited for high-volume applications or where code flexibility is required.

FEATURES

■ 8-Bit CMOS MCU with 8 Kbytes of ROM

■ 256 Byte Register File

- 236 Bytes of General-Purpose RAM

- 16 Bytes Control/Status Registers

- 4 Bytes for Ports

■ 40-Pin DIP, 44-Pin PLCC or 44-Pin QFP Package

■ 4.5V to 5.5V Operating Range

■ Low Power Consumption: 220 mW (max) @ 16 MHz

■ Fast instruction pointer: 1.0 μs @ 12 MHz

■ Two Standby Modes: STOP and HALT

■ 32 Input/Output Lines

FEATURES

■ Full-Duplex UART

■ All Digital Inputs are TTL Levels

■ Auto Latches

■ RAM and ROM Protect

■ Two Programmable 8-Bit Counter/Timers each with

6-Bit Programmable Prescaler.

■ Six Vectored, Priority Interrupts from Eight Different

Sources

■ Clock Speeds: 12 and 16 MHz

■ On-Chip Oscillator that Accepts a Crystal, Ceramic

Resonator, LC, or External Clock Drive.