M16CSLASH1N datasheet(211/238 Pages) RENESAS

211 / 238 page

Rev.1.00

Oct 20, 2004

page 199 of 222

M16C/1N Group

19. Flash Memory Version

REJ09B0007-0100Z

(1) Example for Processing Pins when Using Standard Serial Input/Output Mode

Figure 19.14 and 19.15 show example for processing pins when using standard serial I/O mode 1 and

mode 2, respectively. Control pins will vary according to programmer, therefore refer to the program-

mer manual for more information.

Note that when using standard serial I/O mode 2, make sure a main clock input oscillation frequency

is set to 10 or 16 MHz.

(1) Control pins and external circuitry will vary according to programmer.

For more information, refer to the programmer manual.

(2) In this example, modes are switched between single-chip mode and standard serial

I/O mode by controlling the CNVss input with a switch.

(3) If in standard serial I/O mode 1 there is a possibility that the user reset signal will go

low during serial I/O mode, break the connection between the user reset signal and

RESET pin by using, for example, a jumper switch.

(P17)BUSY

(P16)SCLK

(P14)TXD

CNVss

Clock input

BUSY output

Reset input

Data output

CE(P31)

Microcomputer

SEL(P30)

CRx

CTx

RESET

User reset

signal

CAN transceiver

CAN H

CAN L

(P15)RxD

Data input

Figure 19.14 Example for processing pins when using standard serial I/O mode 1

M16C/1N 데이터시트(PDF) 211 Page - Renesas Technology Corp