st2064b Sitronix Technology Corporation, st2064b Datasheet - Page 48

• Manufacturer Part Number: st2064b
• Description: 8 Bit Microcontroller With 64k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

1
19.1 APPLICATION CIRCUIT UNDER 3V OPERATING VOLTAGE
Ver. 3.0
1
9
9
.
.
A
A
VDD
Clock
LCD
I/O
ALARM
P
P
KEYBOARD
P
P
4 x 4
L
BUZZER
L
FIGURE 19-1
I
I
CONNECTS TO GND.
C
C
A
A
SUBSTRATE
T
T
I
I
: 32768Hz crystal and 2.0MHz RC oscillator
: 1/16 duty
100
: 3V
: PORT A
: PSGO, PSGOB
O
O
N
N
0.1uF
APPLICATION CIRCUIT WITHOUT LCD KEYBOARD AWAKING PULSE
PSG1
PSG0
RESET
PA0~PA3
PA4~PA7
C
C
I
I
R
R
CAP1+ CAP1-
C
C
SEG[0]
U
SEG[0] - - - SEG[47]
U
0.1uF
I
I
T
T
- - -
48 x 16 LCD
SEG[47]
VDD
ST2064B
VP
PANEL
0.1uF
48/57
COM[0]
COM[0] - - - COM[15]
V2
0.1uF 0.1uF
- - -
V3
COM[15]
OSCXO
OSCXI
OSCI
VDD
GND
100pF
32768Hz
VDD
15pF
15pF
0.1uF
4.7uF
ST2064B
5/8/09