ST52T410 datasheet(20/84 Pages) STMICROELECTRONICS

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ST52T410/ST52T420/E420

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(*) ST52x420 only

2.3.4 Output Registers.

The Output Registers (OR) consist of 9 registers

containing data for the microcontroller peripherals

including the I/O Ports.

All registers can be specified by using a decimal

address (for example, 1 identifies the second OR).

By using LOAD instructions the Output Registers

(OR) may be set by using values stored in the

Program Memory (LDPE) or in RAM (LDPR)

The assembler instruction:

LDPR OR_i RAM_Reg.

loads the value of the RAM location identified by

theaddress RAM_Reginthe OR i-th Table2.4

describes OR.

In order to simplify the concept, a mnemonic name

is assigned to OR. The same names are used in

VISUALFIVETM 5.0 development tools.

Use and meaning of each register will be described

in further details in the corresponding section.

REG_CONF 5

PWM/TIMER 0

PWM/Timer 0 Working mode

Configuration

REG_CONF 6

PWM/TIMER 0

PWM/TIMER 0 Prescaler

configuration and output waveform

selection.

REG_CONF 7

PWM/TIMER 0

PWM/TIMER 0 Working Mode

Configuration

REG_CONF 8

PWM/TIMER 1

PWM/TIMER 1 Working Mode

Configuration

REG_CONF 9

PWM/TIMER 1

PWM/TIMER 1 Prescaler

configuration and output waveform

selection.

REG_CONF 10

PWM/TIMER 2

PWM/TIMER 2 Working Mode

Configuration

REG_CONF 11

PWM/TIMER 2

PWM/Timer 2 Prescaler

configuration and output waveform

selection.

REG_CONF 12

PORT A

Set the bit 0,1 and 2 like Digital I/O

or complementary Timers Output.

REG_CONF 13

PORT B

Set the relative bit like digital input

or digital output.

REG_CONF 14

PORT B

Set the relative I/O like Digital or

Analog (*).

REG_CONF 15

PORT C

Set the relative I/O like digital input

or digital output

REG_CONF 16

PORT C

Set the relative I/O like Digital I/O

or Timers Output

Table 2.3 Configuration Registers (continued)

CONFIGURATION REGISTER

PERIPHERAL

DESCRIPTION

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