P87LPC779FDH datasheet(5/74 Pages) PHILIPS

Part #	P87LPC779FDH

Description	CMOS single-chip 8-bit 80C51 microcontroller with 128-byte data RAM, 8 kB OTP

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Manufacturer	PHILIPS [NXP Semiconductors]

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Philips Semiconductors

P87LPC779

CMOS single-chip 8-bit microcontroller

Product data

Rev. 02 — 03 May 2004

5 of 74

9397 750 13213

5.

Pinning information

5.1 Pinning

5.2 Pin description

Fig 3.

20 pin DIP and SO conﬁguration.

handbook, halfpage

002aaa814

1

2

3

4

5

6

7

8

9

10

CMP2/P0.0

DAC0/P1.7

DAC1/P1.6

RST/P1.5

VSS

X1/P2.1

X2/CLKOUT/P2.0

INT1/P1.4

SDA/INT0/P1.3

SCL/T0/P1.2

P0.1/CIN2B

P0.2/CIN2A

P0.3/CIN1B/AD0

P0.4/CIN1A/AD1

P0.5/CMPREF/AD2

VDD

P0.6/CMP1/AD3

P0.7/T1

P1.0/TxD

P1.1/RxD

20

19

18

17

16

15

14

13

12

11

Table 2:

Pin description

Symbol

Type

Description

P0.0 - P0.7

1, 20-16,

14, 13

I/O

Port 0: Port 0 is an 8-bit I/O port with a user-conﬁgurable output type. Port 0 latches are

conﬁgured in the quasi-bidirectional mode and have either ones or zeros written to them

during reset, as determined by the PRHI bit in the UCFG1 conﬁguration byte. The

operation of port 0 pins as inputs and outputs depends upon the port conﬁguration

selected. Each port pin is conﬁgured independently. Refer to Section 8.9 “I/O ports” and

Table 55 “DC electrical characteristics” for details.

The Keypad Interrupt feature operates with Port 0 pins.

Port 0 also provides various special functions as described below:

P0.0

1

O

CMP2 — Comparator 2 output.

P0.1

20

I

CIN2B — Comparator 2 positive input B.

P0.2

19

I

CIN2A — Comparator 2 positive input A.

P0.3

18

I

CIN1B — Comparator 1 positive input B.

I

AD0 — A/D channel 0 input.

P0.4

17

I

CIN1A — Comparator 1 positive input A.

I

AD1 — A/D channel 1 input.

P0.5

16

I

CMPREF — Comparator reference (negative) input.

I

AD2 — A/D channel 2 input.

P0.6

14

O

CMP1 — Comparator 1 output.

I

AD3 — A/D channel 3 input.

P0.7

13

I/O

T1 — Timer/counter 1 external count input or overﬂow output.

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