p89lpc9171fdh NXP Semiconductors, p89lpc9171fdh Datasheet - Page 11

• Manufacturer Part Number: p89lpc9171fdh
• Description: 8-bit Microcontroller With Accelerated Two-clock 80c51 Core, 2 Kb 3 V Byte-erasable Flash With 8-bit Adc
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 3.
[1]
P89LPC9151_61_71_2
Product data sheet
Symbol
P1.0/TXD
P1.1/RXD
P1.2/T0/SCL
P1.3/INT0/SDA
P1.4/INT1
P1.5/RST
V
V
SS
DD
Input/output for P1.0 to P1.4. Input for P1.5.
P89LPC9151 Pin description
Pin
TSSOP14
9
8
7
6
5
3
4
10
Type Description
I/O
O
I/O
I
I/O
I/O
I/O
I/O
I
I/O
I/O
I
I
I
I
I
P1.0 — Port 1 bit 0.
TXD — Transmitter output for serial port.
P1.1 — Port 1 bit 1.
RXD — Receiver input for serial port.
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
P1.4 — Port 1 bit 4. High current source.
INT1 — External interrupt 1 input.
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.
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.
P89LPC9151/9161/9171
8-bit microcontroller with 8-bit ADC
© NXP B.V. 2010. All rights reserved.
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