ZLR32300 datasheet(6/103 Pages) MAXIM

Part #	ZLR32300

Description	Low-Voltage ROM MCU with Infrared Timers

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Manufacturer	MAXIM [Maxim Integrated Products]

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Crimzon® ZLR32300

Product Specification

19-4623; Rev 0; 5/09

Architectural Overview

1

Architectural Overview

Maxim’s Crimzon® ZLR32300 is an ROM-based member of the MCU family of

infrared microcontrollers. With 237 B of general-purpose RAM and 4 KB to 32 KB

of ROM, CMOS microcontrollers offer fast-executing, efficient use of memory,

sophisticated interrupts, input/output (I/O) bit manipulation capabilities, automated

pulse generation/reception, and internal key-scan pull-up transistors.

The Crimzon ZLR32300 architecture (see Figure 1 on page 4) is based on Maxim’s

8-bit microcontroller core with an Expanded Register File allowing access to

register-mapped peripherals, I/O circuits, and powerful counter/timer circuitry. The

Z8® offers a flexible

I/O scheme, an efficient register and address space structure, and a number of

ancillary features that are useful in many consumer, automotive, computer

peripheral, and

battery-operated hand-held applications.

There are three basic address spaces available to support a wide range of

configurations:

1. Program Memory

2. Register File

3. Expanded Register File

The register file is composed of 256 bytes of RAM. It includes four I/O port

registers, 16 control and status registers, and 236 general-purpose registers. The

Expanded Register File consists of two additional register groups (F and D).

To unburden the program from coping with such real-time problems as generating

complex waveforms or receiving and demodulating complex waveform/pulses, the

Crimzon ZLR32300 offers a new intelligent counter/timer architecture with 8-bit

and

16-bit counter/timers (see Figure 2 on page 5). Also included are a large number of

user-selectable modes and two on-board comparators to process analog signals

with separate reference voltages.

All signals with an overline, “ ”, are active Low. For example,

B/W, in which WORD is active Low, and B/W, in which BYTE is

active Low.

Power connections use the conventional descriptions listed in Table 1.

Note:

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