ST10F269Z2QX View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST10F269Z2QX

16-BIT MCU WITH MAC UNIT, 256K BYTE FLASH MEMORY AND 12K BYTE RAM

STMicroelectronics

ST10F269Z2QX Datasheet PDF : 161 Pages

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ST10F269Z2Qx

12.10.1 - Alternate Functions of Port 7

The upper 4 lines of Port 7 (P7.7...P7.4) serve as

capture inputs or compare outputs

(CC31IO...CC28IO) for the CAPCOM2 unit.

The usage of the port lines by the CAPCOM unit,

its accessibility via software and the precautions

are the same as described for the Port 2 lines.

As all other capture inputs, the capture input

function of pins P7.7...P7.4 can also be used as

external interrupt inputs (200ns sample rate at

40MHz CPU clock).

Table 20 : Port 7 Alternate Functions

The lower 4 lines of Port 7 (P7.3...P7.0) serve as

outputs from the PWM module

(POUT3...POUT0).

At these pins the value of the respective port

output latch is EXORed with the value of the PWM

output rather than ANDed, as the other pins do.

This allows to use the alternate output value either

as it is (port latch holds a ‘0’) or to invert its level at

the pin (port latch holds a ‘1’).

Note that the PWM outputs must be enabled via

the respective PENx bit in PWMCON1.

The Table 20 summarizes the alternate functions

of Port 7.

Port 7

Alternate Function

P7.0

P7.1

P7.2

P7.3

P7.4

P7.5

P7.6

P7.7

POUT0

POUT1

POUT2

POUT3

CC28IO

CC29IO

CC30IO

CC31IO

PWM mode channel 0 output

PWM mode channel 1 output

PWM mode channel 2 output

PWM mode channel 3 output

Capture input / compare output channel 28

Capture input / compare output channel 29

Capture input / compare output channel 30

Capture input / compare output channel 31

Figure 39 : Port 7 I/O and Alternate Functions