Advertisement
M16C/5L Group, M16C/56 Group
26.9.5
Standard Serial I/O Mode 2
In standard serial I/O mode 2, a serial programmer is connected to the MCU by using 2-wire clock
asynchronous serial I/O. The main clock is used.
Table 26.24
Pin Functions (Flash Memory Standard Serial I/O Mode 2)
Pin
VCC, VSS
Power input
CNVSS
RESET
Reset input
XIN
Clock input
XOUT
Clock output
Analog power
AVCC, AVSS
supply input
VREF
voltage input
P0_0 to P0_7
Input port P0
P1_0 to P1_7
Input port P1
P2_0 to P2_7
Input port P2
P3_0 to P3_7
Input port P3
P6_0 to P6_3
Input port P6
P6_4 / RTS1
BUSY output
P6_5/CLK1
SCLK input
P6_6 / RXD1
P6_7 / TXD1
TXD output
P7_0 to P7_7
Input port P7
P8_0 to P8_7
Input port P8
P9_0 toP9_3,
Input port P9
P9_5 to P9_7
P10_0 to P10_7 Input port P10
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
Name
I/O
Apply the flash memory program and erase voltage to the VCC
pin. Apply 0 V to the VSS pin.
CNVSS
I
Connect to the VCC pin.
I
Reset input pin.
I
Connect a ceramic resonator or crystal between pins XIN and
XOUT. To input an externally generated clock, input it to the
O
XIN pin and open the XOUT pin.
Connect the AVCC pin to VCC and the AVSS pin to VSS,
respectively.
Reference voltage input pin for A/D converter. When using
Reference
I
standard serial I/O mode 2, and power supply to VREF is not
supplied, connect with VSS.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
Monitor signal output pin for checking the boot program
O
operation.
I
Input a low-level signal
RXD input
I
Serial data input pin.
O
Serial data output pin.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
I
Input a high- or low-level signal or leave open.
Description
26. Flash Memory
Page 696 of 803
Advertisement
