M37517F8HP Datasheet, PDF (3/98 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

7517 Group
PIN DESCRIPTION
Table 1 Pin description
Pin
VCC, VSS
AVCC
AVSS
ADVSS
ADVREF
CNVSS
RESET
XIN
XOUT
Name
Power source
Analog power
source
Analog reference
voltage
CNVSS input
Reset input
Clock input
Clock output
P00/SIN2
P01/SOUT2
P02/SCLK2
P03/SRDY2
P04/AN8–P07/AN11
P10–P17
I/O port P0
I/O port P1
P20/XCOUT
P21/XCIN
P22/SDA1
P23/SCL1
P24/SDA2/RxD
P25/SCL2/TxD
P26/SCLK
P27/CNTR0/
SRDY1
I/O port P2
P30/AN0–
P35/AN5
I/O port P3
P40/CNTR1
P41/INT0
P42/INT1
P43/INT2/SCMP2
P44/INT3/PWM
P45/DFETCNT
ISENS0
ISENS1
I/O port P4
Analog input
Functions
Function except a port function
•Apply voltage of 3.3V to Vcc, and 0 V to Vss.
•Apply voltage of 3.3V to AVcc, and 0 V to AVss and ADVss.
•Reference voltage input pin for A/D converter.
•This pin controls the operation mode of the chip.
•Normally connected to VSS.
•Reset input pin for active “L”.
•Input and output pins for the clock generating circuit.
•Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set
the oscillation frequency.
•When an on-chip oscillator is used, leave the XIN pin and XOUT pin open.
•When an external clock is used, connect the clock source to the XIN pin and leave the XOUT
pin open.
•8-bit CMOS I/O port.
• Serial I/O2 function pin
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
•CMOS 3-state output structure.
• A/D converter input pin
•P10 to P17 (8 bits) are enabled to output large current for LED drive.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
•P22 to P25 can be switched between CMOS compat-
ible input level or SMBUS input level in the I²C-BUS
interface function.
•P20, P21, P24 to P27: CMOS3-state output structure.
•P24, P25: N-channel open-drain structure in the I²C-
BUS interface function.
• Sub-clock generating circuit I/O
pins (connect a resonator)
• I²C-BUS interface function pin
• I²C-BUS interface function pin/
Serial I/O1 function pin
• Serial I/O1 function pin
• Serial I/O1 function pin/
Timer X function pin
•P22, P23: N-channel open-drain structure.
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
•6-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
• A/D converter input pin
• Timer Y function pin
• Interrupt input pin
• Interrupt input pin/SCMP2 output pin
• Interrupt input pin/PWM output pin
• Over current detector function pin
•Input pins for the current integrator and the over current detector. Connect these pins at both
ends of a detection resistor, and connect ISENS0 to GND.
Rev.1.01 Aug 02, 2004 page 3 of 96