R01UH0092EJ0110 Rev.1.10
Page 703 of 807
Jul 31, 2012
M16C/64C Group
30. Flash Memory
Figure 30.26 Circuit Application in Standard Serial I/O Mode 1
Table 30.23
Setting of Standard Serial I/O Mode 1
Signal
Input Level
CNVSS
VCC1
EPM
VSS
RESET
VSS
→
VCC1
CE
VCC2
SCLK
VCC1
CNVSS
SCLK input
BUSY output
Reset input
MCU
P5_0 (CE)
P5_5 (EPM)
RESET
User reset signal
TXD output
RXD 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.
P6_5/CLK1
P6_7/TXD1
P6_6/RXD1
P6_4/RTS1
VCC1
VCC1
VCC1
VCC1
VCC2
Summary of Contents for M16C Series
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