HD6432142 datasheet(528/1177 Pages) RENESAS

Part #	HD6432142

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

PDF	1177 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 15 Serial Communication Interface (SCI, IrDA)

Rev. 4.00 Sep 27, 2006 page 484 of 1130

REJ09B0327-0400

The high-level pulse width is fixed at a minimum of 1.41 µs, and a maximum of (3/16 + 2.5%)

bit rate or (3/16

× bit rate) + 1.08 µs. When system clock φ is 20 MHz, 1.6 µs can be set as the

minimum high-level pulse width at 1.41 µs or above.

When the serial data is 1, no pulse is output.

000

UART frame

IR frame

Data

Start

bit

Stop

bit

Start

bit

Stop

bit

Pulse width is 1.6 µs

to 3/16 bit interval

Transmission

Reception

Bit

interval

Figure 15.22 IrDA Transmit/Receive Operations

Reception

In reception, IR frame data is converted to a UART frame by the IrDA interface, and input to the

SCI.

When a high-level pulse is detected, 0 data is output, and if there is no pulse during a one-bit

interval, 1 data is output. Note that a pulse shorter than the minimum pulse width of 1.41 µs will

be identified as a 0 signal.

HD6432142 Datasheet(PDF) 528 Page - Renesas Technology Corp