SH79F6489PSLASH080PR datasheet(42/152 Pages) SINOWEALTH

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SH79F6488/SH79F6489

Table 7.23 Port Data Register

80H, 90H, A0H,

B0H, C0H

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

P0 (80H, Bank0)

P0.7

P0.6

P0.5

P0.4

P0.3

P0.2

P0.1

P0.0

P1 (90H, Bank0)

P1.7

P1.6

P1.5

P1.4

P1.3

P1.2

P1.1

P1.0

P2 (A0H, Bank0)

P2.7

P2.6

P2.5

P2.4

P2.3

P2.2

P2.1

P2.0

P3 (B0H, Bank0)

P3.7

P3.6

P3.5

P3.4

P3.3

P3.2

P3.1

P3.0

P4 (C0H, Bank0)

P4.7

P4.6

P4.5

P4.4

P4.3

P4.2

P4.1

P4.0

P5 (80H, Bank1)

P5.7

P5.6

P5.5

P5.4

P5.3

P5.2

P5.1

P5.0

P6 (90H, Bank1)

P6.7

P6.6

P6.5

P6.4

P6.3

P6.2

P6.1

P6.0

P7 (A0H, Bank1)

P7.7

P7.6

P7.5

P7.4

P7.3

P7.2

P7.1

P7.0

P8 (B0H, Bank1)

P8.7

P8.6

P8.5

P8.4

P8.3

P8.2

P8.1

P8.0

R/W

Reset Value

(POR/WDT/LVR/PIN)

Bit Number

Bit Mnemonic

Description

7-0

Px.y

x = 0-8, y = 0-7

Port Data Register

7.7.3 Port Diagram

Data

Data Bus

Write

Read Port Pad

PxCRy

Read Data Register/Pad Selection

Read

PxPCRy

Output Mode

I/O Pad

0: From Pad

1: From data register

SFEN

Second

Function

Input Mode

Read Port Data Register

(Pull-up)

0 = ON

1 = OFF

VDD

0 = OFF

1 = ON

Note:

(1) The input source of reading input port operation is from the input pin directly.

(2) The input source of reading output port operation has two paths, one is from the port data Register, and the other is from the

output pin directly. The read Instruction distinguishes which path is selected: The read-modify-write instruction is for the

reading of the data register in output mode, and the other instructions are for reading of the output pin directly.

(3) The destination of writing port operation is the data register regardless the port shared as the second function or not.

(4) In power-down mode:The reserve pins of LQFP64 package must be set to output or input with pull-high to avoid leakage

current.

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