PCD3745AT datasheet(3/32 Pages) PHILIPS

3 / 32 page

1999 Feb 02

Philips Semiconductors

Product speciﬁcation

8-bit microcontroller with 4.5 kbytes OTP

memory and 32 kHz real-time clock

PCD3745A

FEATURES

• 8-bit CPU, RAM and I/O

• 4.5 kbytes OTP memory; 224 bytes RAM

• 32 kHz adjustable crystal oscillator for real-time clock

• Over 100 instructions (based on MAB8048) all of

1 or 2 cycles

• 16 quasi-bidirectional I/O port lines

• 8-bit programmable Timer/event counter 1

• Two 16-bit counters with count inputs pins

• 2 single-level vectored interrupts:

– external; peripheral Counters 1 and 2; RTC alarm

– 8-bit programmable Timer/event counter 1

• Two test inputs, one of which also serves as the external

interrupt input

• Stop and Idle modes for power saving

• Logic supply: 1.8 to 6 V

• CPU clock frequency: 1 to 16 MHz

• Operating temperature: −25 to +70 °C

• Manufactured in silicon gate CMOS process.

GENERAL DESCRIPTION

The PCD3745A is a microcontroller oriented towards

communication and metering applications. It has

4.5 kbytes of One Time Programmable (OTP) memory,

224 bytes RAM and 16 I/O lines.

The PCD3745A also incorporates a low power Real-Time

Clock (RTC) and two low power 16-bit counters. The RTC

runs using a 32 kHz crystal oscillator and is register

adjustable. The RTC and the counters are able to operate

in all microcontroller modes. The instruction set is based

on that of the MAB8048 and is software compatible with

the PCD33xxA family.

This data sheet details the specific properties of the

PCD3745A. The shared characteristics of the PCD33xxA

family of microcontrollers are described in the

“Data

Handbook IC14; Section PCD33xxA Family”, which should

be read in conjunction with this publication.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCD3745AP

DIP28

plastic dual in-line package; 28 leads (600 mil)

SOT117-1

PCD3745AT

SO28

plastic small outline package; 28 leads; body width 7.5 mm

SOT136-1

PCD3745AH

LQFP32

plastic low proﬁle quad ﬂat package; 32 leads; body 7

× 7 × 1.4 mm

SOT358-1

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