p89lpc917 NXP Semiconductors, p89lpc917 Datasheet - Page 12

• Manufacturer Part Number: p89lpc917
• Description: 8-bit Microcontrollers With Accelerated Two-clock 80c51 Core 2 Kb 3 V Flash With 8-bit A/d Converter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 4:
9397 750 14397
Product data
Symbol
P2.2 to P2.5
V
V
SS
DD
P89LPC916 pin description
Pin
6
5
2
11
4
12
Type
I/O
I/O
O
I/O
I
I/O
I/O
I/O
I/O
I
I
Description
Port 2: Port 2 is a 4-bit I/O port having user-configurable output types. During reset
Port 1 latches are configured in the input only mode with the internal pull-up disabled.
The operation of the P2 input and outputs depends upon the port configuration
selected. Refer to
characteristics”
All pins have Schmitt triggered inputs.
Port 2 also provides various special functions as described below:
P2.2 — Port 2 bit 2.
MOSI — SPI master out slave in. When configured as a master this pin is an output.
When configured as a slave, this pin is an input.
P2.3 — Port 2 bit 3.
MISO — SPI master in slave out. When configured as a master this pin is an input.
When configured as a slave, this pin is an output.
P2.4 — Port 2 bit 4.
SS — SPI Slave select.
P2.5 — Port 2 bit 5.
SPICLK — When configured as a master this pin is an output. When configured as a
slave, this pin is an input.
Ground: 0 V reference.
Power Supply: This is the power supply voltage for normal operation as well as Idle
and Power-down modes.
…continued
Rev. 04 — 17 December 2004
8-bit microcontrollers with accelerated two-clock 80C51 core
for details.
Section 9.12.1 “Port configurations”
P89LPC915/916/917
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
and
Table 13 “DC electrical
12 of 72