HT49C30-1(2012) 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT49C30-1 Datasheet PDF : 41 Pages
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HT49R30A-1/HT49C30-1/HT49C30L
Pad Description
Pad Name
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
PB0/INT0
PB1/INT1
PB2/TMR
PB3~PB5
VLCD
V2
V1,C1,C2
COM0~COM2
COM3/SEG18
I/O Options
Description
PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig-
Wake-up ger input capability. Each pin on port can be configured as a wake-up input
Pull-high by options. PA0~PA3 can be configured as a CMOS output or NMOS in-
I/O or None put/output with or without pull-high resistor by options. PA4~PA7 are always
CMOS or pull-high NMOS input/output. Of the eight bits, PA0~PA1 can be set as I/O
NMOS pins or buzzer outputs by options. PA3 can be set as an I/O pin or as a PFD
output also by options.
PB0~PB5 constitute a 6-bit Schmitt trigger input port. Each pin on port are
with pull-high resistor. Of the six bits, PB0 and PB1 can be set as input pins or
I
¾
as external interrupt control pins (INT0) and (INT1) respectively, by software
application. PB2 can be set as an input pin or as a timer/event counter input
pin TMR also by software application.
I
¾
LCD power supply for HT49R30A-1/HT49C30-1.
Voltage pump for HT49C30L.
I
¾
Voltage pump for HT49R30A-1/HT49C30-1.
LCD power supply for HT49C30L.
I
¾
Voltage pump
O
1/2, 1/3 or 1/4 SEG18 can be set as a segment or as a common output driver for LCD panel
Duty
by options. COM0~COM2 are outputs for LCD panel plate.
SEG0~SEG17
OSC1
OSC2
OSC3
OSC4
VSS
VDD
RES
O
¾
LCD driver outputs for LCD panel segments
OSC1 and OSC2 are connected to an RC network or a crystal (by options)
I
O
for the internal system clock. In the case of RC operation, OSC2 is the output
Crystal or RC terminal for 1/4 system clock.
The system clock may come from the RTC oscillator. If the system clock co-
mes from RTC OSC, these two pins can be floating.
I
O
RTC or
System Clock
Real time clock oscillators. OSC3 and OSC4 are connected to a 32768Hz
crystal oscillator for timing purposes or to a system clock source (depending
on the options).
¾
¾
Negative power supply, ground
¾
¾
Positive power supply
I
¾
Schmitt trigger reset input, active low
Absolute Maximum Ratings
Supply Voltage..........................VSS-0.3V to VSS+6.0V*
Storage Temperature ............................-50°C to 125°C
Operating Temperature ...........................-40°C to 85°C
IOH Total ............................................................-100mA
Supply Voltage ........................VSS-0.3V to VSS+2.5V**
Input Voltage..............................VSS-0.3V to VDD+0.3V
IOL Total ..............................................................150mA
Total Power Dissipation .....................................500mW
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed
in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.
²*² For HT49R30A-1/HT49C30-1
²**² For HT49C30L
Rev. 2.10
4
July 30, 2012
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