– 7 –
47
NOT USED
-
See next page
→
1-5. SY1 CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SY1 circuit board, refer to the block diagram. The SY1 circuit board centers around a 8-bit
microprocessor (IC301), and controls camera system condition (mode).
The 8-bit microprocessor handles the following functions.
1. Operation key input, 2. Clock control and backup, 3. Power ON/OFF, 4. Storobe charge control, 5. Signal input and output for
zoom and lens control.
Pin
Signal
1~4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
23
30
32
33
34
35
36
37
38
39
40
41
42
43
45
48
44
46
SCAN OUT 0~3
P ON
PA ON
LCD ON
BL_ON
VSS
VDD
SELF_LED
STBY_LED (GREEN)
AVREF_ON
SI
SO
SCK
PRG SI
PRG SO
PRG SCK
NOT USED
NOT USED
CHG ON
INT_TMP
CHG VOL
BATTERY
AVREF
AVDD
RESET
XCOUT
XCIN
IC
XOUT
XIN
VSS
BAT OFF
SREQ
SCAN IN6
INTP3
BOOT
I/O
O
O
O
O
O
-
-
O
O
O
I
O
I/O
I
O
I/O
-
-
O
I
I
I
-
-
I
O
I
I
O
I
-
I
I
I
I
I/O
Outline
Key matrix output
Digital power ON/OFF control
H : ON
Analog power ON/OFF control
H : ON
LCD power ON/OFF control
H : ON
LCD backlight ON/OFF
GND
VDD
Stand-by LED (green) control
L : ON
A/D converter standard voltage control
L : ON
Receiving data (from ASIC)
Sending data (to ASIC)
Communication clock (to ASIC)
Flash memory write receiving data
Flash memory write sending data
Flash memory write communication clock
-
-
Internal temperature detection input (analog input)
Storobe charge voltage detection (analog input)
Battery voltage detection (analog input)
Analog standard voltage input terminal
A/D converter analog power terminal
Reset input
Clock oscillation terminal (32.768 kHz)
Clock oscillation terminal
Flash memory writing voltage
Main clock oscillation terminal (4MHz)
Main clock oscillation terminal
GND
Battery OFF detection
Serial communication requirement (from ASIC)
Key scan input 6
-
-
Compulsion boot control
Flash charge control
H : ON
13
STBY_LED (RED)
O
Stand-by LED (red) control
L : ON
24
VDD
-
VDD
25
AVSS
-
Analog GND
26~29
SCAN IN 3~0
I
Key scan input
Self-timer LED control
L : ON
31
NOT USED
-
-
Summary of Contents for VAR-G6E
Page 48: ......
Page 49: ...Oct 02 Printed in Japan SANYO Electric Co Ltd Osaka Japan ...
