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38D2 Datasheet(PDF) 5 Page - Renesas Technology Corp

Part No. 38D2
Description  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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Maker  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
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38D2 Datasheet(HTML) 5 Page - Renesas Technology Corp

 
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Rev.3.02
Apr 10, 2008
Page 5 of 131
REJ03B0177-0302
38D2 Group
PIN DESCRIPTION
Table 2
Pin description (1)
Pin
Name
Function
Function except a port function
VCC, VSS
Power source
• Apply 1.8 to 5.5 V to VCC, and 0 V to VSS.
RESET
Reset input
• Reset input pin for active “L”.
XIN
Clock input
• Input and output pins for the main clock generating circuit.
• Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to
set the oscillation frequency. When an external clock is used, connect the clock source to
XIN, and leave XOUT pin open.
• Feedback resistor is built in between XIN pin and XOUT pin.
XOUT
Clock output
VL3
LCD power
source
• Input 0
≤ VL1 ≤ VL2 ≤ VL3 voltage.
• Input 0
− VL3 voltage to LCD.
COM0
COM3
Common output
• LCD common output pins.
•COM2 and COM3 are not used at 1/2 duty ratio.
•COM3 is not used at 1/3 duty ratio.
P00/SEG0/(KW4)
P03/SEG3/(KW7)
I/O port P0
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in a bit unit.
• LCD segment
output pins
• Key input interrupt
input pins
P04/SEG4
P07/SEG7
P10/SEG8
P17/SEG15
I/O port P1
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in a bit unit.
P20/SEG16
P25/SEG21
I/O port P2
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in a bit unit.
P26/SEG22/VL1
P27/SEG23/VL2
• LCD power source
pins
P30/SRDY2/(LED0)
P31/SCLK2/(LED1)
P32/TxD2/(LED2)
P33/RxD2/(LED3)
I/O port P3
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in 4-bit unit.
• Serial I/O2 function pins
P34/INT2/(LED4)
• External interrupt pin
P35/TXOUT1/(LED5)
P36/T2OUT/CKOUT/
(LED6)
• Timer X, Timer 2 output pins
P37/CNTR0/TXOUT2/
(LED7)
• Timer X function pin
P40/OOUT0/AN0
P41/OOUT1/AN1
I/O port P4
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in 4-bit unit.
• A/D convertor
input pins
• Oscillation
external output
pins
P42/AN2/ADKEY
•ADKEY
P43/AN3
−P45/AN5
P46/RTP0/AN6
P47/RTP1/AN7
• Real time port
function pins
P50/INT0
P51/INT1
I/O port P5
• 8-bit I/O port.
• CMOS compatible input level.
• CMOS 3-state output structure.
• I/O direction register allows each pin to be
individually programmed as either input or output.
• Pull-up control is enabled in 4-bit unit
• External input pins
P52/T3OUT/PWM0
P53/T4OUT/PWM1
• Timer 3, Timer 4 output pins
• PWM output pins
P54/RxD1/(KW0)
P55/TxD1/(KW1)
P56/SCLK1/(KW2)
P57/SRDY1/(KW3)
• Serial I/O1 function pins
• Key input interrupt input pins


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