R01UH0092EJ0110 Rev.1.10
Page 702 of 807
Jul 31, 2012
M16C/64C Group
30. Flash Memory
30.9.4
Standard Serial I/O Mode 1
In standard serial I/O mode 1, a serial programmer is connected to the MCU using clock synchronous
serial I/O.
Table 30.22
Pin Functions (Flash Memory Standard Serial I/O Mode 1)
Pin
Name
I/O
Power
Supply
Description
VCC1, VCC2,
VSS
Power input
-
Apply the flash memory program and erase voltage to the
VCC1 pin, and VCC2 to the VCC2 pin. The VCC application
condition is that VCC2
≤
VCC1. Apply 0 V to the VSS pin.
CNVSS
CNVSS
I
VCC1
Connect to the VCC1 pin.
RESET
Reset input
I
VCC1
Reset input pin.
XIN
Clock input
I
VCC1
Input a high-level signal to the XIN pin and open the XOUT pin
when the main clock is not used.
Connect a ceramic resonator or crystal between pins XIN and
XOUT when the main clock is used. To input an externally
generated clock, input it to the XIN pin and open the XOUT pin.
XOUT
Clock output
O
BYTE
BYTE input
I
VCC1
Connect this pin to VSS or VCC1.
AVCC, AVSS
Analog power
supply input
Connect the AVCC pin to VCC1 and the AVSS pin to VSS,
respectively.
VREF
Reference
voltage input
I
Reference voltage input pin for A/D converter. When using
standard serial I/O mode 1, and power supply to VREF is not
supplied, connect with VSS.
P0_0 to P0_7
Input port P0
I
VCC2
Input a high- or low-level signal or leave open.
P1_0 to P1_7
Input port P1
I
VCC2
Input a high- or low-level signal or leave open.
P2_0 to P2_7
Input port P2
I
VCC2
Input a high- or low-level signal or leave open.
P3_0 to P3_7
Input port P3
I
VCC2
Input a high- or low-level signal or leave open.
P4_0 to P4_7
Input port P4
I
VCC2
Input a high- or low-level signal or leave open.
P5_1 to P5_4,
P5_6, P5_7
Input port P5
I
VCC2
Input a high- or low-level signal or leave open.
P5_0
CE
input
I
VCC2
Input a high-level signal.
P5_5
EPM
input
I
VCC2
Input a low-level signal.
P6_0 to P6_3
Input port P6
I
VCC1
Input a high- or low-level signal or leave open.
P6_4 /
RTS1
BUSY output
O
VCC1
BUSY signal output pin
P6_5/CLK1
SCLK input
I
VCC1
Serial clock input pin
P6_6 / RXD1
RXD input
I
VCC1
Serial data input pin.
P6_7 / TXD1
TXD output
O
VCC1
Serial data output pin.
P7_0 to P7_7
Input port P7
I
VCC1
Input a high- or low-level signal or leave open.
P8_0 to P8_7
Input port P8
I
VCC1
Input a high- or low-level signal or leave open.
P9_0 to P9_7
Input port P9
I
VCC1
Input a high- or low-level signal or leave open.
P10_0 to P10_7
Input port P10
I
VCC1
Input a high- or low-level signal or leave open.
Содержание M16C Series
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