M37517F8HP Datasheet, PDF (71/98 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7517 Group
Table 14 Description of pin function (Standard Serial I/O Mode)
Pin
Name
I/O
Description
VCC, VSS
Power input
Apply program/erase protection voltage to Vcc pin and 0 V to Vss pin.
AVCC
Analog power supply input I Connect AVCC to VCC .
AVSS
CNVSS
RESET
XIN
XOUT
ADVSS
Analog power supply input
CNVSS
Reset input
I Connect AVSS to VSS .
I Connect to VCC when VCC = 4.5 V to 5.5 V.
Connect to Vpp (=4.5 V to 5.5 V) when VCC = 2.7 V to 4.5 V.
I Reset input pin. While reset is “L” level, a 20 cycle or longer clock
must be input to XIN pin.
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.}
Analog power supply input
Connect ADVSS to VSS .
ADVREF
P00 to P07
AD reference voltage input
Input port P0
I Enter the reference voltage for AD from this pin, or open.
I Input “H” or “L”, or open.
P10 to P17
P20 to P23
P24
P25
Input port P1
Input port P2
RxD input
TxD output
I Input “H” or “L”, or open.
I Input “H” or “L”, or open.
I This pin is for serial data input.
O This pin is for serial data output.
P26
SCLK input
P27
BUSY output
I This pin is for serial clock input.
O This pin is for BUSY signal output.
P30 to P35
Input port P3
P40, P42 to P45 Input port P4
P41
ISENS0
ISENS1
Input port P4
Analog input
I Input “H” or “L”, or open.
I Input “H” or “L”, or open.
I Input “H” when RESET is released only.
I Connect the sense register. ISENS0 is connected the GND side.
Rev.1.01 Aug 02, 2004 page 71 of 96