P87LPC768 datasheet(8/64 Pages) PHILIPS

8 / 64 page

Philips Semiconductors

Preliminary data

87LPC768

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

with 4 kB OTP 8-bit A/D, Pulse Width Modulator

2001 Aug 06

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.

P2.0

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.

P2.1

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

selected via the EPROM configuration).

VSS

Ground: 0V reference.

VDD

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

Power Down modes.

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