HD64F2149YV datasheet(276/1075 Pages) RENESAS

Nome de Peças	HD64F2149YV

Descrição Electrónicos	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

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Fabricante Electrônico	RENESAS [Renesas Technology Corp]

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Section 8 I/O Ports

Rev. 3.00 Jan 18, 2006 page 248 of 1044

REJ09B0280-0300

Selection Method and Pin Functions

P91/

IRQ1

P91DDR

Pin function

P91 input pin

P91 output pin

IRQ1 input pin

When bit IRQ1E in IER is set to 1, this pin is used as the

IRQ1 input pin.

P90/

LWR/IRQ2/

ADTRG/ECS2

The pin function is switched as shown below according to the combination of

operating mode, bit ABW in WSCR, bits HI12E and CS2E in SYSCR2, bit

FGA20E in HICR, and bit P90DDR.

Operating

mode

Mode 1,

modes 2 and 3 (EXPE = 1)

Modes 2, 3 (EXPE = 0)

ABW

—

HI12E

—

Any one 0

FGA20E

—

CS2E

—

P90DDR

—

101

—

Pin function

LWR

output pin

P90

input pin

P90

output pin

P90

input pin

P90

output pin

ECS2

input pin

IRQ2 input pin, ADTRG input pin

When the IRQ2E bit in IER is set to 1 in mode 1, modes 2 and 3 (EXPE = 1)

with the ABW bit in WSCR set to 1, or in mode 2 and 3 (EXPE = 0), this pin is

used as the

IRQ2 input pin.

When TRGS1 and TRGS0 in ADCR of the A/D converter are both set to 1, this

pin is used as the

ADTRG input pin.

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