Philips Semiconductors

Preliminary specification

TPM754A

Microcontroller with TrackPoint

™ microcode from IBM

2

1999 Nov 11

The Philips Semiconductors TPM754 is a small package, low cost,

ROM-coded 80C51 with IBM

®’s TrackPoint™ pointing algorithms

and control code. TrackPoint is the result of years of human factors

research and innovation at IBM. The result is a “velocity sensitive”

pointing solution more efficient and easier to use than “position

sensitive” devices such as the mouse, the trackball, or the touchpad.

IBM has licensed Philips Semiconductors to sell microcontrollers

with TrackPoint code. By purchasing a TPM from Philips, the

purchaser becomes a sub-licensee of Philips. The selling price of

Philips’ TPM includes the royalties for IBM’s intellectual property,

which Philips in turn pays to IBM. Customers for TPMs do not need

to sign any licensing agreement with either IBM or Philips. This code

is the intellectual property of IBM, which is covered by numerous

patents, and must be treated accordingly.

The TPM754 contains IBM

® TrackPoint™ code, a single module

PCA, a 256

× 8 RAM, 21 I/O lines, two 16-bit counter/timers, a

two-priority level interrupt structure, a full duplex serial channel, an

on-chip oscillator, and an 8-bit D/A converter.

For identical device without TrackPoint code, see the 8XC754

datasheet.

FEATURES

– Idle mode

– Power-down mode

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

10

11

12

17

18

19

20

21

22

23

24

25

26

27

28

RxD/T0/P3.4

TxD/T1/P3.5

ECI/P3.6

INT1/P3.7

RST

X2

X1

ZIN

YIN

XIN

P3.3

P3.2

P3.1

P3.0

INT0/P1.0

CEX/P1.1

XYDAC

P1.2

ZDAC/ASEL

XYSOURCE

XYDACBIAS

XYZRAMP

13

16 VREG

14

15 DECOUPLE

SU00726B

PLASTIC

SHRINK

SMALL

OUTLINE

PACKAGE

ORDERING INFORMATION

ORDERING CODE

TEMPERATURE RANGE

°C

AND PACKAGE

FREQUENCY

DRAWING

NUMBER

PTPM754A DB

0 to +70, 28-pin Shrink Small Outline Package

3.5 to 12 MHz

SOT341-1

NOTE:

1. PTPM754A has improved start-up from low-voltage power down.

IBM is a registered trademark, and TrackPoint is a trademark of IBM Corporation.