st2032a Sitronix Technology Corporation, st2032a Datasheet - Page 46

• Manufacturer Part Number: st2032a
• Description: 8 Bit Microcontroller With 32k Bytes Rom
• Manufacturer: Sitronix Technology Corporation

Ver 2.4
VDD
Clock
LCD
I/O
ALARM
FIGURE 19-2 Application Circuit with LCD keyboard awaking pulse
: 32768Hz crystal and 2.0MHz RC oscillator
: 1/16 duty
: 3V
: PORT-A/B/C
: PSGO, PSGOB
46/54
Note: Because the COMs and SEGs
output VDD level while the LCD
is turned off. There is no
keyboard awaking pulse to wake
up the system. So the ON/OFF
key must connect between GND
and Port-A.
ST2032A
9/13/07