R8CSLASH15 datasheet(227/277 Pages) RENESAS

227 / 277 page

R8C/14 Group, R8C/15 Group

18. Flash Memory Version

Rev.2.10

Jan 19, 2006

Page 215 of 253

REJ09B0164-0210

18.5.1.1

Example of Circuit Application in the Standard Serial I/O Mode

Figure 18.16 show Pin Process in Standard Serial I/O Mode 2, Figure 18.17 show Pin Process in

Standard Serial I/O Mode 3. Since the controlled pins vary depending on the programmer, refer to the

manual of your serial programmer.

Figure 18.16

Pin Process in Standard Serial I/O Mode 2

Figure 18.17

Pin Process in Standard Serial I/O Mode 3

NOTES:

1. In this example, modes are switched between single-chip mode and

standard serial I/O mode by controlling the MODE input with a switch.

2. Connecting the oscillation is necessary. Set the main clock frequency 1

MHz to 20 MHz. Refer to Appendix 2.1 Connecting examples with M16C

Flash Starter (M3A-0806).

Microcomputer

TXD

RXD

Data Output

Data Input

MODE

NOTES:

1. Controlled pins and external circuits vary depending on the programmer.

Refer to the programmer manual for details.

2. In this example, modes are switched between single-chip mode and

standard serial I/O mode by connecting a programmer.

3. When operating with on-chip oscillator clock, connecting the oscillating

circuit is not necessary.

Microcomputer

MODE

RESET

User Reset Signal

MODE I/O

Reset Input

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