P89LPC936FDH datasheet(10/75 Pages) NXP

Part #	P89LPC936FDH

Description	8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB/16 kB 3 V byte-erasable flash with 8-bit ADCs

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Manufacturer	NXP [NXP Semiconductors]

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P89LPC933_934_935_936_7

Product data sheet

Rev. 07 — 26 November 2008

10 of 75

NXP Semiconductors

P89LPC933/934/935/936

8-bit microcontroller with accelerated two-clock 80C51 core

[1]

Input/output for P1.0 to P1.4, P1.6, P1.7. Input for P1.5.

P3.0 to P3.1

I/O

Port 3: Port 3 is a 2-bit I/O port with a user-conﬁgurable output type.

During reset Port 3 latches are conﬁgured in the input only mode with the

internal pull-up disabled. The operation of Port 3 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 11 “Static characteristics” for details.

All pins have Schmitt trigger inputs.

Port 3 also provides various special functions as described below:

P3.0/XTAL2/

CLKOUT

9

5

I/O

P3.0 — Port 3 bit 0.

O

XTAL2 — Output from the oscillator ampliﬁer (when a crystal oscillator

option is selected via the ﬂash conﬁguration.

O

CLKOUT — CPU clock divided by 2 when enabled via SFR bit (ENCLK -

TRIM.6). It can be used if the CPU clock is the internal RC oscillator,

watchdog oscillator or external clock input, except when XTAL1/XTAL2 are

used to generate clock source for the RTC/system timer.

P3.1/XTAL1

8

4

I/O

P3.1 — Port 3 bit 1.

I

XTAL1 — Input to the oscillator circuit and internal clock generator circuits

(when selected via the ﬂash conﬁguration). It can be a port pin if internal

RC oscillator or watchdog oscillator is used as the CPU clock source, and

if XTAL1/XTAL2 are not used to generate the clock for the RTC/system

timer.

VSS

73I

Ground: 0 V reference.

VDD

21

17

I

Power supply: This is the power supply voltage for normal operation as

well as Idle and Power-down modes.

Table 4.

Pin description …continued

Symbol

Type

Description

TSSOP28,

PLCC28

HVQFN28

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