ZLP12840 datasheet(24/58 Pages) ZILOG

Part #	ZLP12840

Description	Crimzon-TM Infrared Microcontrollers ZLP12840 OTP MCU with Learning Amplification

PDF	58 Pages

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Manufacturer	ZILOG [Zilog, Inc.]

Direct Link	http://www.zilog.com

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24 / 58 page

PS024406-0106

P R E L I M I N A R Y

Port 2

ZLP12840 OTP MCU

Product Specification

Port 2

Port 2 is an 8-bit, bidirectional, CMOS-compatible I/O port. Its eight I/O lines can be inde-

pendently configured under software control as inputs or outputs. Port 2 is always avail-

able for I/O operation. An EPROM option bit is available to connect eight pull-up

transistors on this port. Bits programmed as outputs are globally programmed as either

push/pull or open-drain. The Power-On Reset function resets with the eight bits of Port 2

[P27:20] configured as inputs.

Port 2 also has an 8-bit input OR and AND gate and edge detection circuitry, which can be

used to wake up the part. P20 can be programmed to access the edge-detection circuitry in

demodulation mode. See the configuration illustration in Figure 5.

Figure 4. Port 0 Configuration

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ZLP12840 Datasheet(PDF) 24 Page - Zilog, Inc.