TMP86CS64AFG datasheet(74/202 Pages) TOSHIBA

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Page 64

5. I/O Ports

TMP86CS64AFG

Note 1: Don't set output mode to pin, which is used for an analog input.

Note 2: When used for input mode (include analog input mode), read-modify-write instruction such as bit manipulate

instructions cannot be used.

Read-modify-write instruction writes the all data of 8-bit after data is read and modified. Because a bit setting input

mode read data of terminal, the output latch is changed by these instructions. So P6 port cannot input data.

Note: However the P6PU is set to “1” (pull-up), the port configured output is not set up pull-up resistor.

P6DR

(0006H)

543

P67

AIN7

P66

AIN6

P65

AIN5

P64

AIN4

P63

AIN3

P62

AIN2

P61

AIN1

P60

AIN0

(Initial value: 0000 0000)

P6CR

(002EH)

543

P6CR7

P6CR6

P6CR5

P6CR4

P6CR3

P6CR2

P6CR1

P6CR0

(Initial value: 0000 0000)

P6CR

I/O control for port P6

(specified for each bit)

AINDS = 1 (AD unused)

AINDS = 0 (AD used)

R/W

P6DR = “0”

P6DR = “1”

P6DR = “0”

P6DR = “1”

Input "0" fixed #1

Input mode

AD input #2

Input mode

Output mode

Input data to a pin whose input is fixed to “0” is always “0” regardless of the pin state and whether or not a

programmable pull-up resistor is added.

When a read instruction for port P6 is executed, the bit of analog input mode becomes read data “0”.

P6PU

(0FBCH)

432

P6PU7

P6PU6

P6PU5

P6PU4

P6PU3

P6PU2

P6PU1

P6PU0

(Initial value: 0000 0000)

P6PU

Port P6 pull up control register

(specified for each bit)

0: Non pull-up

1: Pull-up

R/W

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