HT49C10-1 View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
MFG CO.
'HT49C10-1' PDF : 38 Pages View PDF
HT49R10A-1/HT49C10-1
Pad Description
Pad Name I/O Options
Description
PA0/BZ
PA1/BZ
PA2
PA3/PFD
PA4~PA7
PA0~PA7 constitute an 8-bit bidirectional input/output port with Schmitt trig-
Wake-up ger input capability. Each pin on the port can be configured as a wake-up in-
Pull-high put by configuration options. PA0~PA3 can be configured as a CMOS output
I/O or None or NMOS input/output with or without pull-high resistor by configuration op-
CMOS or tions. PA4~PA7 are always pull-high NMOS input/output. PA0~PA1 can be
NMOS setup as I/O pins or buzzer outputs by a configuration option. PA3 can be
setup as an I/O pin or as a PFD output also by a configuration option.
PB0 and PB2 constitute a 2-bit Schmitt trigger input port. Each pin on the port
PB0/INT
PB2/TMR
I
¾
has a pull-high resistor. PB0 can be setup as an input pin or an external inter-
rupt control pin (INT) by software application. PB2 can be setup as an input
pin or as a timer/event counter input pin TMR also by software.
VLCD
I
¾
LCD power supply
V1, V2, C1, C2 I
¾
Voltage pump
COM0~COM2
COM3/SEG14
O
1/2, 1/3 or 1/4
Duty
SEG14 can be setup as a segment or as a common output driver for LCD
panel by a configuration option. COM0~COM2 are the outputs for LCD
panel.
SEG0~SEG13 O
¾
LCD driver outputs for LCD panel segments
OSC1
OSC2
OSC1 and OSC2 are connected to an RC network or a crystal, a
I
O
configuration option for the internal system clock. In the case of RC opera-
Crystal or RC tion, OSC2 is the output 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 left floating.
OSC3
OSC4
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
upon the configuration options).
VSS
VDD
RES
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
Input Voltage..............................VSS-0.3V to VDD+0.3V
IOL Total ..............................................................150mA
Total Power Dissipation .....................................500mW
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-40°C to 85°C
IOH Total............................................................-100mA
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 reliabil-
ity.
Rev. 1.50
3
July 30, 2012
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