1. Low power dissipation.
2. Powerful instruction set (135 instructions).
Binary addition, subtraction, BCD adjustment, logical operation in direct and index addressing mode.
Single bit manipulation (set, reset, decision for branch).
Various conditional branches.
16 working registers and manipulation.
LCD driver data transfer.
3. LCD/LED driver output.
27 LCD/LED driver outputs (up to drive 135 LCD/LED segments).
1/1 Duty, 1/2 Duty, 1/3 Duty, 1/4 Duty or 1/5 Duty for both LCD/LED selected by MASK option.
1/2 Bias or 1/3 Bias for LCD selected by MASK option.
Single instruction to turn off all segments.
Mask option is used to select SEG1~12, 21~35 as DC outputs/P_open drain.
4. Memory capacity.
ROM capacity 1536 x 16 bits.
RAM capacity 96 x 4 bits.
5. Input/output ports.
Port IOA 4 pins.(with internal pull-low, muxed with SEG24~27)
Port IOB 4 pins.(with internal pull-low, muxed with SEG28~31)
Port IOC 4 pins (with internal pull-low / low-level-hold muxed with SEG32~35)
IOC port has built-in input signal chattering prevention circuitry.
6. 8-level subroutine nesting.
7. Interrupt function.
External factors 3 (INT pin, Port IOC & KI input).
Internal factors 2 (Pre-Divider, Timer1).
8. Built-in EL-light driver.
ELC, ELP (Muxed with SEG28, SEG29).
9. Built-in Alarm, Frequency or Melody generator.
BZB, BZ (Muxed with SEG30, SEG31).
10. Built-in KEY_BOARD scanning function.
K1~K12 (Shared with SEG1~SEG12).
KI1~KI4 (Muxed with SEG32~SEG35).
11. One 6-bit programmable timer with programmable clock source.
12. Watch dog timer.
13. Built-in Voltage doubler, halver, tripler charge pump circuit.
14. Dual clock operation.
15. HALT function.
16. STOP function.