SPMC802B

Built-in 8-bit Sunplus CPU core with two index registers and up to 6MHz clock operation.
28 general-purpose I/O channels that are belong to fourI/O ports. Some of them are combined with the options to select Pull-Up/Down Resistors.
Three external interrupt groups, one is come from individual I/O Channel PB5 and group input PA3:0, one iscome from individual I/O Channel, PA7, and one is a group input, PC port.
External Reset input option on PB4.
An 8-bit Timer with Real Time Interrupt control.
An 8-bit Re-loadable Timer with 8 stages prescalar.
One 6-bit PWM waveform output.
Two voltage Comparator inputs with selectable internal or external voltage reference. An interrupt event control for the compare result.
A watchdog timer for program control.
4.5K bytes of ROM with 128 bytes of RAM.
R-Oscillation or Crystal input options for system clock.
Stop or Wait Control setting for Power-Saving Mode.
Slow Transition Output Pins.

Specifications

The SPMC802B is an OTP version of SPMC02A with reliability enhancement.  It equips with an 8-bit Sunplus CPU core, 4.5K bytes of program ROM, and 128 bytes of RAM.  SPMC802B also combines with four I/O ports, two timers with one PWM output, two Comparator inputs, and a Watchdog  Timer.  Three  groups of interrupt are implemented for  different kinds  of applications. Major application fields are small home appliances or computer peripheral applications.  The details are described below.