M16C30P_07 Datasheet, PDF (241/317 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/30 SERIES

M16C/30P Group
19. Flash Memory Version
19.4.2 Example of Circuit Application in the Standard Serial I/O Mode
Figure 19.16 and Figure 19.17 show example of Circuit Application in Standard Serial I/O Mode 1 and Mode 2,
respectively. Refer to the user's manual of your serial programmer to handle pins controlled by the serial
programmer.
VCC1
SCLK input
VCC1
TXD output
BUSY output
RXD input
VCC1
Microcomputer
VCC1
P6_5/CLK1
P6_7/TXD1
P6_4/RTS1
P5_0(CE)
P5_5(EPM)
VCC1
P6_6/RXD1
CNVSS
Reset input
User reset
signal
RESET
VCC1
P8_5/NMI
NOTES:
1. Control pins and external circuitry will vary depending on a programmer.
For more information, see the programmer manual.
2. In this example, modes are switched between single-chip mode and standard
serial input/output mode by controlling the CNVSS input with a switch.
3. If in standard serial input/output mode 1 there is a possibility that the user reset
signal will go low during serial input/output mode, break the connection between
the user reset signal and RESET pin by using, for example, a jumper switch.
Figure 19.16 Circuit Application in Standard Serial I/O Mode 1
Rev.1.22 Mar 29, 2007 Page 225 of 291
REJ09B0179-0122