87LPC769 datasheet(9/61 Pages) PHILIPS

Part #	87LPC769

Description	Low power, low price, low pin count 20 pin microcontroller with 4 kB OTP 8-bit A/D, and DAC

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Preliminary specification

87LPC769

Low power, low price, low pin count (20 pin)

microcontroller with 4 kB OTP 8-bit A/D, and DAC

2001 Jan 11

6

MNEMONIC

NAME AND FUNCTION

TYPE

PIN NO.

P2.0–P2.1

6, 7

I/O

Port 2: Port 2 is a 2-bit I/O port with a user-configurable output type. Port 2 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 2 pins as inputs and outputs

depends upon the port configuration selected. Each port pin is configured independently. Refer to the

section on I/O port configuration and the DC Electrical Characteristics for details.

Port 2 also provides various special functions as described below.

7

O

P2.0

X2

Output from the oscillator amplifier (when a crystal oscillator option is

selected via the EPROM configuration).

CLKOUT

CPU clock divided by 6 clock output when enabled via SFR bit and in

conjunction with internal RC oscillator or external clock input.

6

I

P2.1

X1

Input to the oscillator circuit and internal clock generator circuits (when

selected via the EPROM configuration).

VSS

5

I

Ground: 0V reference.

VDD

15

I

Power Supply: This is the power supply voltage for normal operation as well as Idle and

Power Down modes.

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