Renesas M16C/64C User Manual page 736

M16C/64C Group
Table 30.23 Setting of Standard Serial I/O Mode 1
Signal
CNVSS
EPM
RESET
CE
SCLK
SCLK input
TXD output
BUSY output
RXD input
Reset input
Notes:
1. Control pins and external circuitry will vary depending on the 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 pin 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.
Figure 30.26 Circuit Application in Standard Serial I/O Mode 1
R01UH0092EJ0110 Rev.1.10
Jul 31, 2012
Input Level
VCC1
VSS
VSS → VCC1
VCC2
VCC1
VCC1
VCC1
VCC1
User reset signal
MCU
P6_5/CLK1
P5_0 (CE)
P6_7/TXD1
P5_5 (EPM)
P6_4/RTS1
CNVSS
P6_6/RXD1
RESET
30. Flash Memory
VCC2
VCC1
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