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P89LPC915FN Datasheet(PDF) 11 Page - NXP Semiconductors

Part # P89LPC915FN
Description  8-bit microcontrollers with accelerated two-clock 80C51 core 2 kB 3 V flash with 8-bit A/D converter
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

P89LPC915FN Datasheet(HTML) 11 Page - NXP Semiconductors

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P89LPC915_916_917_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 15 December 2009
11 of 75
NXP Semiconductors
P89LPC915/916/917
8-bit microcontrollers with accelerated two-clock 80C51 core
7.2 Pin description
Table 4.
P89LPC915 pin description
Symbol
Pin
Type Description
P0.0 to P0.5
I/O
Port 0: Port 0 is a 6-bit I/O port with a user-configurable output type.
During reset Port 0 latches are configured in the input only mode with the
internal pull-up disabled. The operation of Port 0 pins as inputs and
outputs depends upon the port configuration selected. Each port pin is
configured independently. Refer to Section 8.13.1 “Port configurations”
and Table 15 “Static characteristics” for details.
The Keypad Interrupt feature operates with Port 0 pins.
All pins have Schmitt triggered inputs.
Port 0 also provides various special functions as described below:
P0.0/CMP2/KBI0
2
I/O
P0.0 — Port 0 bit 0.
O
CMP2 — Comparator 2 output.
I
KBI0 — Keyboard input 0.
P0.1/CIN2B/KBI1/AD10
1
I/O
P0.1 — Port 0 bit 1.
I
CIN2B — Comparator 2 positive input B.
I
KBI1 — Keyboard input 1.
I
AD10 — ADC1 channel 0 analog input.
P0.2/CIN2A/KBI2/AD11
14
I/O
P0.2 — Port 0 bit 2.
I
CIN2A — Comparator 2 positive input A.
I
KBI2 — Keyboard input 2.
I
AD11 — ADC1 channel 1 analog input.
P0.3/CIN1B/KBI3/AD12
13
I/O
P0.3 — Port 0 bit 3.
I
CIN1B — Comparator 1 positive input B.
I
KBI3 — Keyboard input 3.
I
AD12 — ADC1 channel 2 analog input.
P0.4/CIN1A/KBI4/AD13/
DAC1
12
I/O
P0.4 — Port 0 bit 4.
I
CIN1A — Comparator 1 positive input A.
I
KBI4 — Keyboard input 4.
I
AD13 — ADC1 channel 3 analog input.
I
DAC1 — DAC1 analog output.
P0.5/CMPREF/KBI5/CLKIN
11
I/O
P0.5 — Port 0 bit 5.
I
CMPREF — Comparator reference (negative) input.
I
KBI5 — Keyboard input 5.
I
CLKIN — External clock input.
P1.0 to P1.5
I/O, I
[1]
Port 1: Port 1 is a 6-bit I/O port with a user-configurable output type,
except for three pins as noted below. During reset Port 1 latches are
configured in the input only mode with the internal pull-up disabled. The
operation of the configurable Port 1 pins as inputs and outputs depends
upon the port configuration selected. Each of the configurable port pins
are programmed independently. Refer to Section 8.13.1 “Port
configurations” and Table 15 “Static characteristics” for details. P1.2 to
P1.3 are open drain when used as outputs. P1.5 is input only.
All pins have Schmitt triggered inputs.
Port 1 also provides various special functions as described below:


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