H8S2245 datasheet(535/818 Pages) RENESAS

Part #	H8S2245

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series

PDF	818 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 13 Smart Card Interface

Rev.3.00 Mar. 26, 2007 Page 493 of 772

REJ09B0355-0300

(1) Data write

TDR

TSR

(shift register)

Data 1

(2) Transfer from

TDR to TSR

Data 1

; Data remains in TDR

(3) Serial data output

Note: When the ERS flag is set, it should be cleared until transfer of the last bit (D7 in LSB-first

transmission, D0 in MSB-first transmission) of the next transfer data to be transmitted has

been completed.

In case of normal transmission: TEND flag is set

In case of transmit error:

ERS flag is set

Steps (2) and (3) above are repeated until the TEND flag is set

I/O signal line output

Data 1

Figure 13.5 Relation Between Transmit Operation and Internal Registers

I/O data

12.5etu

TXI

(TEND interrupt)

11.0etu

Guard

time

When GM = 1

Legend:

: Start bit

D0 to D7 : Data bits

: Parity bit

: Error signal

When GM = 0

Figure 13.6 TEND Flag Generation Timing in Transmission Operation

H8S2245 Datasheet(PDF) 535 Page - Renesas Technology Corp