SH7014 datasheet(504/754 Pages) RENESAS

504 / 754 page

16. Pin Function Controller (PFC)

Rev.5.00 Sep. 27, 2007 Page 470 of 716

REJ09B0398-0500

16.3.9

Port E I/O Register (PEIOR)

The port E I/O register (PEIOR) is a 16-bit read/write register that selects input or output

for the 16 port E pins. Bits PE15IOR to PE0IOR correspond to pins PE15/DACK1 to

PE0/TIOC0A/

DREQ0. PEIOR is enabled when the port E pins function as general input/outputs

(PE15 to PE0) or TIOC pin of the MTU. For other functions, it is disabled.

When the port E pin functions are as PE15 to PE0, or TIOC pin of the MTU, a given pin in port E

is an output pin if its corresponding PEIOR bit is set to 1, and an input pin if the bit is cleared to 0.

PEIOR is initialized to H'0000 by external power-on reset; however, it is not initialized for reset

by WDT, standby mode, or sleep mode, so the previous data is maintained.

Bit:

PE15

IOR

PE14

IOR

PE13

IOR

PE12

IOR

PE11

IOR

PE10

IOR

PE9

IOR

PE8

IOR

Initial value:

R/W:

R/W

Bit:

PE7

IOR

PE6

IOR

PE5

IOR

PE4

IOR

PE3

IOR

PE2

IOR

PE1

IOR

PE0

IOR

Initial value:

R/W:

R/W

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