P89LPC970 데이터 시트보기 (PDF) - NXP Semiconductors.
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P89LPC970
NXP Semiconductors.
P89LPC970 Datasheet PDF : 67 Pages
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NXP Semiconductors
P89LPC970/971/972
8-bit microcontroller with accelerated two-clock 80C51 core
6.2 Pin description
Table 3. Pin description
Symbol
Pin
DIP20,
TSSOP20
P0.0 to P0.7
P0.0/CMP2/KBI0/ 1
SPICLK
P0.1/CIN2B/
20
KBI1
P0.2/CIN2A/
19
KBI2
P0.3/CIN1B/
18
KBI3/T2
P0.4/CIN1A/
17
KBI4
P0.5/CMPREF/ 16
KBI5/T3
Type
I/O
I/O
O
I
I/O
I/O
I
I
I/O
I
I
I/O
I
I
I/O
I/O
I
I
I/O
I
I
I/O
Description
Port 0: Port 0 is an 8-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
7.16.1 “Port configurations” and Table 11 “Static characteristics” for details.
The Keypad Interrupt feature operates with Port 0 pins.
All pins have Schmitt trigger inputs.
Port 0 also provides various special functions as described below:
P0.0 — Port 0 bit 0.
CMP2 — Comparator 2 output
KBI0 — Keyboard input 0.
SPICLK — SPI clock. When configured as master, this pin is output; when
configured as slave, this pin is input (pin remap).
P0.1 — Port 0 bit 1.
CIN2B — Comparator 2 positive input B.
KBI1 — Keyboard input 1.
P0.2 — Port 0 bit 2.
CIN2A — Comparator 2 positive input A.
KBI2 — Keyboard input 2.
P0.3 — Port 0 bit 3. High current source.
CIN1B — Comparator 1 positive input B.
KBI3 — Keyboard input 3.
T2 — Timer/counter 2 external count input or overflow output.
P0.4 — Port 0 bit 4. High current source.
CIN1A — Comparator 1 positive input A.
KBI4 — Keyboard input 4.
P0.5 — Port 0 bit 5. High current source.
CMPREF — Comparator reference (negative) input.
KBI5 — Keyboard input 5.
T3 — Timer/counter 3 external count input or overflow output.
P89LPC97X
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 8 June 2010
© NXP B.V. 2010. All rights reserved.
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