P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 8

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 3:
9397 750 14051
Product data sheet
Symbol
P0.2/CIN2A/
KBI2/AD01
P0.3/CIN1B/
KBI3/AD02
P0.4/CIN1A/
KBI4/AD03
P0.5/CMPREF/
KBI5
P0.6/CMP1/
KBI6
P0.7/T1/KBI7
P1.0 to P1.7
P1.0/TXD
P1.1/RXD
P1.2/T0/SCL
Pin description
Pin
TSSOP28,
PLCC28
25
24
23
22
20
19
18
17
12
…continued
HVQFN28
21
20
19
18
16
15
14
13
8
Type Description
I/O
I
I
I
I/O
I
I
I
I/O
I
I
I
I/O
I
I
I/O
O
I
I/O
I/O
I
I/O, I
I/O
O
I/O
I
I/O
I/O
I/O
[1]
Rev. 01 — 25 February 2005
P0.2 — Port 0 bit 2.
CIN2A — Comparator 2 positive input A.
KBI2 — Keyboard input 2.
AD01 — ADC0 channel 1 analog input.
P0.3 — Port 0 bit 3.
CIN1B — Comparator 1 positive input B.
KBI3 — Keyboard input 3.
AD02 — ADC0 channel 2 analog input.
P0.4 — Port 0 bit 4.
CIN1A — Comparator 1 positive input A.
KBI4 — Keyboard input 4.
AD03 — ADC0 channel 3 analog input.
P0.5 — Port 0 bit 5.
CMPREF — Comparator reference (negative) input.
KBI5 — Keyboard input 5.
P0.6 — Port 0 bit 6.
CMP1 — Comparator 1 output.
KBI6 — Keyboard input 6.
P0.7 — Port 0 bit 7.
T1 — Timer/counter 1 external count input or overflow output.
KBI7 — Keyboard input 7.
Port 1: Port 1 is an 8-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
configurations”
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:
P1.0 — Port 1 bit 0.
TXD — Transmitter output for the serial port.
P1.1 — Port 1 bit 1.
RXD — Receiver input for the 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
2
C serial clock input/output.
and
8-bit microcontroller with 10-bit A/D converter
Table 10 “DC electrical characteristics”
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Section 7.13.1 “Port
P89LPC938
for details.
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