M16C26A Datasheet, PDF (272/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
17. Flash Memory Version
Table 17.9.1. Pin Functions (Flash Memory Standard Serial I/O Mode)
Pin
VCC,VSS
CNVSS
Name
Power input
CNVSS
I/O
Description
Apply the voltage guaranteed for Program and Erase to Vcc pin and 0
V to Vss pin.
I Connect to Vcc pin.
RESET
Reset input
I Reset input pin. While RESET pin is "L" level, wait for td(ROC).
XIN
XOUT
AVCC, AVSS
Clock input
Clock output
Analog power supply input
I ^{Connect a ceramic resonator or crystal oscillator between X IN and}
XOUT pins. To input an externally generated clock, input it to X IN pin
O and open XOUT pin.
Connect AVss to Vss and AVcc to Vcc, respectively.
VREF
P15, P17
P16
P60 to P63
P64
P65
P66
P67
P70 to P77
P80 to P84,
P87
P85
P86
Reference voltage input
Input port P1
P16 input
Input port P6
BUSY output
SCLK input
RxD input
TxD output
Input port P7
Input port P8
RP input
CE input
I Enter the reference voltage for AD from this pin.
I Input "H" or "L" level signal or open.
I Connect this pin to Vcc while RESET is low. (2)
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: Monitor signal output pin for boot program
operation check
I ^{Standard serial I/O mode 1: Serial clock input pin}
Standard serial I/O mode 2: Input "L".
I Serial data input pin
O Serial data output pin (1)
I Input "H" or "L" level signal or open.
I Input "H" or "L" level signal or open.
I Connect this pin to Vss while RESET is low. (2)
I Connect this pin to Vcc while RESET is low. (2)
P90 to P93,
Input port P9
I Input "H" or "L" level signal or open.
P100 to P107
Input port P10
I Input "H" or "L" level signal or open.
NOTES:
1. When using standard serial input/output mode 1, to input “H” to the TxD pin is necessary while the
___________
RESET pin is “L”. Therefore, connect this pin to VCC via a resistor. Adjust the pull-up resistor value on
a system not to affect a data transfer after reset, because this pin changes to a data-output pin
2. Set following either or both
_____
•Connect the CE pin to VCC.
_____
•Connect the RP pin to VSS and the P16 pin to VCC.
Rev. 2.00 Feb.15, 2007 ^{page 255} of 329
REJ09B0202-0200