HD64F3437TF16 Datasheet, PDF(168/752 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 (168/752 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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7.9.3 Pin Functions

Pins P86 to P80 are multiplexed with HIF input/output, SCI1 input/output, I2C clock input/output,

and IRQ5 to IRQ3 input. Table 7.17 indicates the functions of pins P86 to P80.

Table 7.17 Port 8 Pin Functions

Pin

P86/IRQ5/

SCK1/SCL

P85/IRQ4/

CS2/RxD1

Pin Functions and Selection Method

Bit C/A in SMR of SCI1, bits CKE0 and CKE1 in SCR of SCI1, bit ICE in ICCR,

and bit P86DDR select the pin function as follows

ICE

0

1

CKE1

0

1

â

C/A

0

1

â

â

CKE0

0

1

â

â

â

P86DDR

Pin function

0

P86

input

1

P86

output

â

SCK1

output

â

SCK1

output

â

SCK1

intput

â

SCL

input/

output

IRQ5 input*

Note: * IRQ5 input is usable when bit IRQ5E is set to 1 in IER

Bit RE in SCR of SCI1, bit STAC in STCR, bit P85DDR, and the operating mode

select the pin function as follows

Operating mode

Slave mode

Not slave mode

STAC

0

1

â

RE

â

0

1

0

1

P85DDR

Pin function

â

CS2

input

0

P85

input

1

P85

output

â

RxD1

input

0

P85

input

1

P85

output

â

RxD1

input

IRQ4 input*

Note: * IRQ4 input is usable when bit IRQ4E is set to 1 in IER

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