P89LPC9151 NXP [NXP Semiconductors], P89LPC9151 Datasheet - Page 13

• Manufacturer Part Number: P89LPC9151
• Description: 8-bit microcontroller with accelerated two-clock 80C51 core, 2 kB 3 V byte-erasable flash with 8-bit ADC
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
Table 4.
[1]
P89LPC9151_61_71_2
Product data sheet
Symbol
P1.2/T0/SCL
P1.3/INT0/SDA
P1.5/RST
P2.2 to P2.5
P2.2/MOSI
P2.3/MISO
P2.4/SS
P2.5/SPICLK
V
V
SS
DD
Input/output for P1.0 to P1.3. Input for P1.5.
P89LPC9161 Pin description
Pin
TSSOP16
8
7
3
6
5
2
11
4
12
Type Description
I/O
I/O
I/O
I/O
I
I/O
I
I
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I/O
I
I
P1.2 — Port 1 bit 2 (open-drain when used as output).
T0 — Timer/counter 0 external count input or overflow output (open-drain when
used as output).
SCL — I
P1.3 — Port 1 bit 3 (open-drain when used as output).
INT0 — External interrupt 0 input.
SDA — I
P1.5 — Port 1 bit 5 (input only).
RST — External Reset input during power-on or if selected via UCFG1. When
functioning as a reset input, a LOW on this pin resets the microcontroller, causing
I/O ports and peripherals to take on their default states, and the processor begins
execution at address 0. Also used during a power-on sequence to force ISP
mode.
Port 2: Port 2 is an 4-bit I/O port with a user-configurable output type. During
reset Port 2 latches are configured in the input only mode with the internal pull-up
disabled. The operation of Port 2 pins as inputs and outputs depends upon the
port configuration selected. Each port pin is configured independently. Refer to
Section 7.15 “I/O ports”
All pins have Schmitt trigger 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 master, this pin is output;
when configured as slave, this pin is input.
P2.3 — Port 2 bit 3.
MISO — When configured as master, this pin is input, when configured as slave,
this pin is output.
P2.4 — Port 2 bit 4.
SS — SPI Slave select.
P2.5 — Port 2 bit 5.
SPICLK — SPI clock. When configured as master, this pin is output; when
configured as slave, this pin is input.
Ground: 0 V reference.
Power supply: This is the power supply voltage for normal operation as well as
Idle and Power-down modes.
Rev. 02 — 9 February 2010
2
2
C-bus serial clock input/output.
C-bus serial data input/output.
for details.
P89LPC9151/9161/9171
8-bit microcontroller with 8-bit ADC
© NXP B.V. 2010. All rights reserved.
13 of 91