H8SSLASH2214 datasheet(372/936 Pages) RENESAS

Il numero della parte	H8S/2214

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 312 of 872

REJ09B0189-0400

9.5.3

Pin Functions

Port 7 pins also function as DMAC I/O pins (

DREQ0, TEND0, DREQ1, and TEND1), bus control

output pins (

CS4 to CS7), external module output pins (EXMSTP, EXMS, and EXDTCE), and the

manual reset input pin (

MRES). Port 7 pin functions are shown in table 9.8.

Table 9.8

Port 7 Pin Functions

Pin Functions and Selection Method

P77

The pin function is switched as shown below according to the setting of bit P77DDR.

P77DDR

Pin function

P77 input

P77 output

P76/

EXMSTP

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

P76STPOE in OPINSEL and bit P76DDR.

P76STPOE

P76DDR

—

Pin function

P76 input

P76 output

EXMSTP output

P75/

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

P75MSOE in OPINSEL and bit P75DDR.

P75MSOE

P75DDR

—

Pin function

P75 input

P75 output

EXMS output

P74/

MRES/

EXDTCE

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

MRESE in SYSCR and bit P74DDR.

P74DTCOE

MRESE

—

P74DDR

—

Pin function

P74 input

P74 output

MRES input

EXDTCE output

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