P89LPC952FBD datasheet(10/66 Pages) PHILIPS

10 / 66 page

9397 750 14716

Preliminary data sheet

Rev. 01— 16 September 2005

10 of 66

Philips Semiconductors

P89LPC952

8-bit microcontroller with 10-bit ADC

P1.6

I/O

P1.6 — Port 1 bit 6.

P1.7/AD04

I/O

P1.7 — Port 1 bit 7.

AD04 — ADC0 channel 4 analog input.

P2.0 to P2.5

I/O

Port 2: Port 2 is an 8-bit I/O port with a user-conﬁgurable output type.

During reset Port 2 latches are conﬁgured in the input only mode with the

internal pull-up disabled. The operation of Port 2 pins as inputs and

outputs depends upon the port conﬁguration selected. Each port pin is

conﬁgured independently. Refer to Section 7.13.1 “Port conﬁgurations”

and Table 10 “Static characteristics” for details.

All pins have Schmitt triggered inputs.

Port 2 also provides various special functions as described below:

P2.0/AD07

I/O

P2.0 — Port 2 bit 0.

AD07 — ADC0 channel 7 analog input.

P2.1/AD06

I/O

P2.1 — Port 2 bit 1.

AD06 — ADC0 channel 6 analog input.

P2.2/MOSI

I/O

P2.2 — Port 2 bit 2.

I/O

MOSI — SPI master out slave in. When conﬁgured as master, this pin is

output; when conﬁgured as slave, this pin is input.

P2.3/MISO

I/O

P2.3 — Port 2 bit 3.

I/O

MISO — When conﬁgured as master, this pin is input, when conﬁgured

as slave, this pin is output.

P2.4/SS

I/O

P2.4 — Port 2 bit 4.

I/O

SS — SPI Slave select.

P2.5/SPICLK

I/O

P2.5 — Port 2 bit 5.

I/O

SPICLK — SPI clock. When conﬁgured as master, this pin is output;

when conﬁgured as slave, this pin is input.

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 7.13.1 “Port conﬁgurations”

and Table 10 “Static characteristics” for details.

All pins have Schmitt triggered inputs.

Port 3 also provides various special functions as described below:

P3.0/XTAL2/

CLKOUT

I/O

P3.0 — Port 3 bit 0.

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

option is selected via the ﬂash conﬁguration.

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.

Table 3:

Pin description …continued

Symbol

Type Description

PLCC44

LQFP44

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