Samsung 8-Bit CMOS Microcontroller, S3C9228/P9228 user manual Vdd, Vss

S3C9228/P9228PRODUCT OVERVIEW

Table 1-1. Pin Descriptions (Continued)

Pin Names	Pin	Pin Description	Circuit	Pin	Share
	Type		Number	Numbers	Pins
VDD, VSS	–	Power input pins for internal power block	–	5,6(11,12)	–
XOUT, XIN	–	Main oscillator pins for main clock	–	7,8(13,14)
XTOUT, XTIN	–	Sub oscillator pins for sub clock	–	11,10(17,16)	–
TEST	–	Chip test input pin	–	9(15)	–
		Hold GND when the device is operating
RESET	I	RESET signal input pin. Schmitt trigger	B	12(18)	–
		input with internal pull-up resistor.
INT	I/O	External interrupts input.	E-4	39-42(3-6)	P0.0-P0.3
			F-16A	1-4(7-10)	P1.0-P1.3
INTP	I/O	Key scan interrupts inputs.	H-32B	17-18(23-24)	P3.1-P3.0
T1CLK	I/O	Timer 1/A external clock input.	E-4	40(4)	P0.1
TAOUT	I/O	Timer 1/A clock output.	E-4	39(3)	P0.0
AD0-AD3	I/O	Analog input pins for A/D converts	F-16A	1-4(7-10)	P1.0-P1.3
		module.
BUZ	I/O	Buzzer signal output.	E-4	42(6)	P0.3
SCK	I/O	Serial clock, serial data output, serial data	H-32A	16-15(22-21)	P2.0-P2.1
SO		input
SI			E-4	14(20)	P2.2
SEG0-SEG1	I/O	LCD segment signal output	H-32A	15-16(21-22)	P2.1-P2.0
SEG2-SEG3			H-32B	17-18(23-24)	P3.1-P3.0
SEG4-SEG19			H-32	19-34(25-40)	P4.0-P4.7
					P5.0-P5.7
COM0-COM7	I/O	LCD common signal output	H-32	38-31	P6.3-P6.0
				(2-1,42-37)	P5.7-P5.4

NOTE: Parentheses indicate pin number for 42-SDIP-600 package.

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