HD64F3437TF16 Datasheet, PDF(153/752 Page) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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HD64F3437TF16 Datasheet, PDF (153/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

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7.5.3 Pin Functions

Port 4 has different pin functions depending on whether the chip is or is not operating in slave

mode. Table 7.9 indicates the pin functions of port 4.

Table 7.9 Port 4 Pin Functions

Pin

P47/PW1

Pin Functions and Selection Method

Bit OE in TCR of PWM timer 1 and bit P47DDR select the pin function as follows

OE

0

1

P47DDR

Pin function

0

P47 input

1

P47 output

0

1

PW1 output

P46/PW0

Bit OE in TCR of PWM timer 0 and bit P46DDR select the pin function as follows

OE

0

1

P46DDR

Pin function

0

P46 input

1

P46 output

0

1

PW0 output

P45/TMRI1/

HIRQ12

P44/TMO1/

HIRQ1

Bit P45DDR and the operating mode select the pin function as follows

P45DDR

0

1

Operating mode

â

Not slave mode

Slave mode

Pin function

P45 input

P45 output

HIRQ12 output

TMRI1 input*

Note: * TMRI1 input is usable when bits CCLR1 and CCLR0 are both set to 1 in

TCR of 8-bit timer 1

Bits OS3 to OS0 in TCSR of 8-bit timer 1, bit P44DDR, and the operating mode

select the pin function as follows

OS3 to 0

All 0

Not all 0

P44DDR

0

Operating mode

â

1

â

Not slave Slave mode

â

mode

Pin function

P44 input

P44 output HIRQ1 output TMO1 output

124

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