Z86C89

Pinout

Specifications

Symbol	Description	Min	Max	Unit
VCC	Supply Voltage (*)	-0.3	+7.0	V
TSTG	Storage Temp	-65°	+150°	C
TA	Oper Ambient Temp		†	C
	Power Dissipation		2.2	W

Description

 The Z86C90/C89 CCP™ (Consumer Controller Processor) introduces a new level of sophistication to single-chip architecture. The Z86C90/C89 are ROMless members of the Z8 single-chip microcontroller family with 236 bytes of general purpose RAM. The only difference that exists between the Z86C89 and the Z86C90 is that the on-chip oscillator of the Z86C89 can accept an external RC network or other external clock source, while the Z86C90's on-chip oscillator accepts a crystal, ceramic resonator, LC, or external clock source drive. The CCP controllers are housed in a 40-pin DIP, 44-pin Leaded Chip Carrier, or a 44-pin Quad Flat Pack, and are CMOS compatible. The CCP offers the use of external memory which enables this Z8 microcomputer to be used where code flexibility is required. Zilog's CMOS microcomputer offers fast execution, efficient use of memory, sophisticated interrupts, input/output bit manipulation capabilities, and easy hardware/software system expansion along with low cost and low power consumption.

The Z86C90/C89 architecture is based on Zilog's 8-bit microcontroller core with an Expanded Register File to allow access to register mapped peripheral and I/O circuits. The CCP offers a flexible I/O scheme, an efficient register and address space structure, and a number of ancillary features that are useful in many industrial, automotive, computer peripherals, and advanced scientific applications.

The CCP applications demand powerful I/O capabilities. The Z86C90/C89 fulfills this with 32 pins dedicated to input and output. These lines are grouped into four ports. Each port consists of eight lines, and is configurable under software control to provide timing, status signals, parallel I/O with or without handshake, and an address/data bus for interfacing external memory.

There are four basic address spaces available to support this wide range of configurations: Program Memory, Register File, Data Memory, and Expanded Register File. The Register File is composed of 236 bytes of general purpose registers, four I/O port registers, and fifteen control and status registers. The Expanded Register File consists of two control registers.

To unburden the program from coping with the real-time problems, such as counting/timing and data communication, the Z86C90/C89 offers two on-chip counter/timers. Included are a large number of user selectable modes, and two on-board comparators to process analog signals with a common reference voltage (see Functional Block Diagram).