SH7101 datasheet(295/560 Pages) RENESAS

295 / 560 page

Section 8 Multifunction Timer Pulse Unit (MTU)

Rev.1.00 Sep. 18, 2008 Page 261 of 522

REJ09B0069-0100

8.9

Port Output Enable (POE)

The port output enable (POE) can be used to establish a high-impedance state for high-current

pins, by changing the

POE0 to POE3 pin input, depending on the output status of the high-current

pins (PE9/TIOC3B, PE11/TIOC3D, PE12/TIOC4A, PE13/TIOC4B/

MRES, PE14/TIOC4C,

PE15/TIOC4D/

IRQOUT). It can also simultaneously generate interrupt requests.

The high-current pins also become high-impedance regardless of whether these pin functions are

selected in cases such as when the oscillator stops or in standby mode.

8.9.1

Features

• Each of the POE0 to POE3 input pins can be set for falling edge, Pφ/8 × 16, Pφ/16 × 16, or

φ/128 × 16 low-level sampling.

• High-current pins can be set to high-impedance state by POE0 to POE3 pin falling-edge or

low-level sampling.

• High-current pins can be set to high-impedance state when the high-current pin output levels

are compared and simultaneous low-level output continues for one cycle or more.

• Interrupts can be generated by input-level sampling or output-level comparison results.

SH7101 Datasheet(PDF) 295 Page - Renesas Technology Corp