ST52F510 datasheet(55/106 Pages) STMICROELECTRONICS

55 / 106 page

ST52F510/F513/F514

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Bit 7-0: PBI7-0 Port B Input data

The logical level applied in the Port B pins,

configured as digital input, can be achieved by

reading this register.

Port C Data Input Register (PORT_C_IN)

Input Register 2 (02h) Read only

Reset Value: XXXX XXXX

Note: This register is not used in 16/20 pin devices

Bit 7-6: Not Used

Bit 5-0: PCI5-0 Port C Input data

The logical level applied in the Port C pins,

configured as digital input, can be achieved by

reading this register.

7.6.3 Output Registers.

Port A Data Output Register (PORT_A_OUT)

Output Register 0 (00h) Write only

Reset Value: 0000 0000 (00h)

Bit 7-0: PAO7-0 Port A Output data

The logical values written in these register bits are

put in the Port A pins configured as digital output.

Port B Data Output Register (PORT_B_OUT)

Output Register 1 (01h) Write only

Reset Value: 0000 0000 (00h)

(*) Not used in 16/20 pin package devices

(**) Not used in 16 pin package devices

Bit 7-0: PBO7-0 Port B Input data

The logical values written in these register bits are

put in the Port B pins configured as digital output.

Port C Data Output Register (PORT_C_OUT)

Output Register 2 (02h) Write only

Reset Value: 0000 0000 (00h)

Note: This register is not used in 16/20 pin devices

Bit 7-6: Not Used

Bit 5-0: PCO5-0 Port C Input data

The logical values written in these register bits are

put in the Port C pins configured as digital output.

PCI5

PCI4

PCI3

PCI2

PCI1

PCI0

PAO7

PAO6

PAO5

PAO4

PAO3

PAO2

PAO1

PAO0

PBO7*

PBO6*

PBO5**

PBO4**

PBO3**

PBO2**

PBO1

PBO0

PCO5

PCO4

PCO3

PCO2

PCO1

PCO0

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