M16C6S_09 Datasheet, PDF (180/208 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
Flash Memory Version
Table 1.22.1. Functional explanation of pin (flash memory standard serial I/O mode)
Pin
VCC,VSS
CNVSS
Signal name
Power supply input
CNVSS
I/O
Description
Apply the voltage guaranteed for Program and Erase to Vcc pin.
Apply 0 V to Vss pin.
I Connect to Vcc pin.
RESET
Reset input
I Reset input pin. While RESET pin is "L" level, input a 20 cycle or
longer clock to XIN pin.
XIN
XOUT
Clock input
Clock output
I ^{Connect a ceramic resonator or crystal oscillator between XIN and}
XOUT pins. To input an externally generated clock, input it to XIN pin
O and open XOUT pin.
VDCCN
Input "H" level signal.
VCCA, VSSA
VREF
Analog power supply input
Standard voltage input
I ^{Please connect AVcc to Vcc and connect AVss to Vss.}
I ^{Input the standard voltage of a preamplifier and an}
operational amplifier.
P60 to P63
P64/RTS1
Input port P6
BUSY output
I Input "H" or "L" level signal or open.
O ^{Standard serial I/O mode 1: BUSY signal output pin}
Standard serial I/O mode 2: Monitors the boot program operation
check signal output pin.
P65/CLK1
SCLK input
I Standard serial I/O mode 1: Serial clock input pin
Standard serial I/O mode 2: Input "L."
P66/RXD1
RxD input
I Serial data input pin.
P67/TXD1
TxD output
O Serial data output pin. (Note 1)
P70, P71, P73,
P74, P76
P80, P81, P83,
P84, P85
Input port P7
Input port P8
I Input "H" or "L" level signal or open.
I Input "H" or "L" level signal or open.
P15
P90 to P92
CE input
Input port P11
I ^{Input "H" level signal.}
I Input "H" or "L" level signal or open.
Note 1: When using standard serial input/output mode 1, the TxD pin must be held high while the RESET pin is pulled low.
Therefore, connect this pin to Vcc1 via a resistor. Because this pin is directed for data output after reset, adjust the pull-up
resistance value in the system so that data transfers will not be affected.
Rev.5.01 Dec 10, 2009 page 180 of 201
REJ03B0014-0501