H8SSLASH2214 datasheet(368/936 Pages) RENESAS

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Section 9 I/O Ports

Rev.4.00 Sep. 18, 2008 Page 308 of 872

REJ09B0189-0400

9.5

Port 7

9.5.1

Overview

Port 7 is an 8-bit I/O port. Port 7 pins also function as DMAC input 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). The functions of pins

P77 to P74 are the same in all operating mode, but the functions of pins P73 to P70 depend on the

operating mode.

Figure 9.4 shows the port 7 pin configuration.

P77

P76 / EXMSTP

P75 /

EXMS

P74 /

MRES/EXDTCE

P73 /

TEND1/CS7

P72 /

TEND0/CS6

P71 /

DREQ1/CS5

P70 /

DREQ0/CS4

P77

P76

P75

P74

P73

P72

P71

P70

(input/output)

(input/output)/EXMSTP (output)

(input/output)/

EXMS (output)

(input/output)/

MRES(input)/EXDTCE (output)

(input)/

TEND1 (output)/CS7 (output)

(input)/

TEND0 (output)/CS6 (output)

(input)/

DREQ1 (input)/CS5 (output)

(input)/

DREQ0 (input)/CS4 (output)

Port 7 pins

Pin functions in modes 4 to 6

P77

P76

P75

P74

P73

P72

P71

P70

(input/output)

(input/output)/EXMSTP (output)

(input/output)

(input/output)/

TEND1 (output)

(input/output)

(input/output)/

DREQ0 (input)

EXMS (output)

MRES (input)/EXDTCE (output)

TEND0 (output)

DREQ1 (input)

Pin functions in mode 7

Port 7

Figure 9.4 Port 7 Pin Functions

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