M32CSLASH86 datasheet(442/505 Pages) RENESAS

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Page 419

25. Flash Memory Version

)

(

Clock input

BUSY output

Data output

Data input

BUSY

SCLK

TXD

CNVss

P50(CE)

P55(EPM)

NMI

RESET

RxD

Reset input

User reset

signal

Microcomputer

NOTES:

1. Control pins and external circuitry vary with the serial programmer. Refer to the user's manual

included with the serial programmer.

2. In this example, a selector controls the voltage applied to the CNVSS pin to switch between in

single-chip mode and in standard serial I/O mode.

3. In standard serial I/O mode 1, if the user reset signal becomes "L" while the microcomputer is

communicating with the serial programmer, break the connection between the user reset signal and

the RESET pin by, for example, a jumper selector.

VCC

25.4.2 Circuit Application in Standard Serial I/O Mode

Figure 25.17 shows an example of a circuit application in standard serial I/O mode 1. Figure 25.18 shows

an example of a circuit application serial I/O mode 2. Figure 25.19 shows an example of a circuit applica-

tion serial I/O mode 3. Refer to the user's manual of your serial programmer to handle pins controlled by

the serial programmer.

Figure 25.15 Circuit Application in Standard Serial I/O Mode 1

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