Samsung C8249 Microscope & Magnifier User Manual


 
S3C8245/P8245/C8249/P8249 PRODUCT OVERVIEW
1-7
Table 1-1. S3C8245/C8249 Pin Descriptions (Continued)
Pin
Names
Pin
Type
Pin
Description
Circuit
Type
Pin
Numbers
(note)
Share
Pins
ADC0–ADC6
ADC7
I A/D converter analog input channels F–10
F–18
36–42
43
P2.0–P2.6
P2.7
AV
REF
A/D converter reference voltage 44
AV
SS
A/D converter ground 45
INT0–INT7 I External interrupt input pins D–4 20–27 P0.0–P0.7
nRESET I System reset pin
(pull-up resistor: 250 k)
B 19
TEST I 0 V: Normal MCU operating
5 V: Test mode
12 V: for OTP writing
16
SDAT, SCLK O Serial OTP interface pins; serial data
and clock
D–2 10, 11 P3.3, P3.4
V
DD,
V
SS
Power input pins for CPU operation
(internal) and Power input for OTP
Writing
12, 13
X
OUT,
X
IN
Main oscillator pins 14, 15
SO, SCK, SI I/O Serial I/O interface clock signal E–2 33–35 P1.5–P1.7
V
VLDREF
I Voltage detector reference voltage input F–18 43 P2.7
TACAP I Timer A Capture input D–2 10 P3.3
TACLK I Timer A External clock input D–2 9 P3.2
TAOUT/TAPWM O Timer A output and PWM output D–2 8 P3.1
TBPWM O Timer B PWM output D–2 7 P3.0
T1CAP I Timer 1 Capture input E–2 28 P1.0
T1CLK I Timer 1 External clock input E–2 29 P1.1
T1OUT/T1PWM O Timer 1 output and PWM output E–2 30 P1.2
COM0–COM3 O LCD common signal output H 51–54
SEG0–SEG15 O LCD segment output H 55–70
SEG16–SEG23 O LCD segment output H–14 71–78 P4.0–P4.7
SEG24–SEG31 O LCD Segment output H–14 79–6 P5.0–P5.7
V
LC0
–V
LC2
O LCD power supply 48–50
BUZ O 0.5, 1, 2 or 4 kHz frequency output for
buzzer sound with 4.19 MHz main
system clock or 32768 Hz subsystem
clock
E–2 32 P1.4
CA, CB Capacitor terminal for voltage booster 46–47