HMS81C2020A

Supply voltage ................................... -0.3 to +7.0 V
Storage Temperature ....................... -40 to +85 °C
Voltage on Normal voltage pin
with respect to Ground (V_SS).........-0.3 to V_DD+0.3 V
Voltage on High voltage pin
with respect to Ground (V_SS)........-45V to V_DD+0.3 V
Maximum current out of V_SS pin ....................150 mA
Maximum current into V_DD pin ........................ 80 mA
Maximum current sunk by (IOL per I/O Pin) .....20 mA
Maximum output current sourced by (IOH per I/O Pin)
........................................................................... 8 mA
Maximum current (I_OL) ................................. 100 mA
Maximum current (I_OH).................................... 50 mA
Note: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The HMS81C2012A and HMS81C2020Aare advanced CMOS 8-bit microcontroller with 12K/20K bytes of ROM. These are a powerful microcontroller which provides a highly flexible and cost effective solution to many VFD applications. These provide the following standard features: 12K/20K bytes of ROM, 448 bytes of RAM, 8-bit timer/counter, 8-bit A/D converter, 10-bit High Speed PWM Output, Programmable Buzzer Driving Port, 8-bit Basic Interval Timer, 7-bit Watch dog Timer, Serial Peripheral Interface, on-chip oscillator and clock circuitry. They also come with high voltage I/O pins that can directly drive a VFD (Vacuum Fluorescent Display). In addition, the HMS81C2012A and HMS81C2020A support power saving modes to reduce power consumption.