p87lpc768bn NXP Semiconductors, p87lpc768bn Datasheet - Page 8

• Manufacturer Part Number: p87lpc768bn
• Description: Low Power, Low Price, Low Pin Count 20 Pin Microcontroller With 4 Kb Otp 8-bit A/d,and Pulse Width Modulator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2001 Aug 06
P2.0–P2.1
V
V
MNEMONIC
SS
DD
Low power, low price, low pin count (20 pin) microcontroller
with 4 kB OTP 8-bit A/D, Pulse Width Modulator
PIN NO.
6, 7
15
7
6
5
TYPE
I/O
O
I
I
I
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.
Ground: 0V reference.
Power Supply: This is the power supply voltage for normal operation as well as Idle and
Power Down modes.
P2.0
P2.1
X2
CLKOUT
X1
Output from the oscillator amplifier (when a crystal oscillator option is
selected via the EPROM configuration).
CPU clock divided by 6 clock output when enabled via SFR bit and in
conjunction with internal RC oscillator or external clock input.
Input to the oscillator circuit and internal clock generator circuits (when
selected via the EPROM configuration).
6
NAME AND FUNCTION
87LPC768
Preliminary data