SH79F166APSLASH044PR datasheet(33/113 Pages) SINOWEALTH

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SH79F166A

7.7 I/O Port

7.7.1 Features

 41 bi-directional I/O ports

 Share with alternative functions

The SH79F166A has 41 bi-directional I/O ports. The PORT data is put in Px register. The PORT control register (PxCRy)

controls the PORT as input or output. Each I/O port has an internal pull-high resistor, which is controlled by PxPCRy when the

PORT is used as input (x = 0-5, y = 0-7).

For SH79F166A, some I/O pins can share with alternative functions. There exists a priority rule in CPU to avoid these functions

be conflict when all the functions are enabled. (Refer to Port Share Section for details).

7.7.2 Register

Table 7.15 Port Control Register

E1H - E5H

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

P0CR (E1H, Bank0)

P0CR.7

P0CR.6

P0CR.5

P0CR.4

P0CR.3

P0CR.2

P0CR.1

P0CR.0

P1CR (E2H, Bank0)

P1CR.7

P1CR.6

P1CR.5

P1CR.4

P1CR.3

P1CR.2

P1CR.1

P1CR.0

P2CR (E3H, Bank0)

P2CR.7

P2CR.6

P2CR.5

P2CR.4

P2CR.3

P2CR.2

P2CR.1

P2CR.0

P3CR (E4H, Bank0)

P3CR.7

P3CR.6

P3CR.5

P3CR.4

P3CR.3

P3CR.2

P3CR.1

P3CR.0

P4CR (E5H, Bank0)

P4CR.4

P4CR.3

P4CR.2

P4CR.1

P4CR.0

P5CR (E1H, Bank1)

P5CR.3

P5CR.2

P5CR.1

P5CR.0

R/W

Reset Value

(POR/WDT/LVR/PIN)

Bit Number

Bit Mnemonic

Description

7-0

PxCRy

x = 0-5, y = 0-7

Port input/output direction control Register

0: input mode

1: output mode

Table 7.16 Port Pull up Resistor Control Register

E9H - ECH

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

P0PCR (E9H, Bank0)

P0PCR.7

P0PCR.6

P0PCR.5

P0PCR.4

P0PCR.3

P0PCR.2

P0PCR.1

P0PCR.0

P1PCR (EAH, Bank0)

P1PCR.7

P1PCR.6

P1PCR.5

P1PCR.4

P1PCR.3

P1PCR.2

P1PCR.1

P1PCR.0

P2PCR (EBH, Bank0)

P2PCR.7

P2PCR.6

P2PCR.5

P2PCR.4

P2PCR.3

P2PCR.2

P2PCR.1

P2PCR.0

P3PCR (ECH, Bank0)

P3PCR.7

P3PCR.6

P3PCR.5

P3PCR.4

P3PCR.3

P3PCR.2

P3PCR.1

P3PCR.0

P4PCR (EDH, Bank0)

P4PCR.4

P4PCR.3

P4PCR.2

P4PCR.1

P4PCR.0

P5PCR (E9H, Bank1)

P5PCR.3

P5PCR.2

P5PCR.1

P5PCR.0

R/W

Reset Value

(POR/WDT/LVR/PIN)

Bit Number

Bit Mnemonic

Description

7-0

PxPCRy

x = 0-5, y = 0-7

Input Port internal pull-high resistor enable/disable control

0: internal pull-high resistor disabled

1: internal pull-high resistor enabled

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