HT48R03 Holtek Semiconductor, HT48R03 Datasheet - Page 3

• Manufacturer Part Number: HT48R03
• Description: (HT48R01 - HT48R03) 10-Pin MSOP I/O Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
Pin Description
* All pull-high resistors are controlled by an register option bit.
Absolute Maximum Ratings
Supply Voltage ...........................V
Input Voltage..............................V
I
Total Power Dissipation .....................................500mW
Rev. 1.00
OL
PA0/BZ
PA1/BZ
PA2/TMR0
PA3/INT
PA4/TMR1
OSC1/PA6
OSC2/PA5
PA7/RES
VDD
VSS
Pin Name
Total ..............................................................150mA
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.
I/O
I/O
I/O
I/O
I/O
I/O
I
RC, Crystal,
PA7 or RES Active low schmitt trigger reset input or PA7 input.
Configura-
RTC or I/O
Options
tion
SS
SS
Bidirectional 2-line I/O. Each pin can be setup as a wake-up input using a soft-
ware register. Software instructions determine if each pin is a CMOS output or a
Schmitt trigger input. Pull-high resistors can be connected using a pull-high soft-
ware register. PA0/PA1 are pin-shared with the BZ and BZ buzzer function pins.
Bidirectional single line I/O. PA2 can be setup as a wake-up input using a soft-
ware register. Software instructions determine if the pin is a CMOS output or
Schmitt trigger input. A pull-high resistor can be connected using a pull-high soft-
ware register. This line is pin-shared with the Timer/event 0 counter input.
Bidirectional single line I/O. PA3 can be setup as a wake-up input using a soft-
ware register. Software instructions determine if the pin is a CMOS output or
Schmitt trigger input. A pull-high resistor can be connected using a pull-high soft-
ware register. This line is pin-shared with INT.
Bidirectional single line I/O. PA4 can be setup as a wake-up input using a soft-
ware register. Software instructions determine if the pin is a CMOS output or
Schmitt trigger input. A pull-high resistor can be connected using a pull-high soft-
ware register. This line is pin-shared with the Timer/event counter 1 input.
Bidirectional 2-line I/O and oscillator pins. If configured as I/Os, software instruc-
tions determine if each pin is a CMOS output or a Schmitt trigger input. Pull-high
resistors can be connected using a pull-high software register. A configuration
option determines the choice of oscillator mode and I/O function. The four oscilla-
tor modes are:
1. Internal RC OSC: both pins configured as I/Os
2. External crystal OSC: both pins configured as OSC1/OSC2
3. Internal RC + RTC OSC: both pins configured as OSC2, OSC1.
4. External RC OSC+PA5: PA6 configured as OSC1 pin, PA5 configured as I/O
Note: When the system clock is sourced from the internal RC OSC, there are 3
frequency options
Positive power supply
Negative power supply, ground
0.3V to V
0.3V to V
DD
SS
+6.0V
+0.3V
12MHz, 8MHz and 4MHz.
3
Storage Temperature ............................ 50 C to 125 C
Operating Temperature........................... 40 C to 85 C
I
OH
Total............................................................ 100mA
Description
HT48R01/HT48R02/HT48R03
December 20, 2006