GENERAL DESCRIPTIONThe TM8763 is an embedded high-performance 4-bit microcontroller with
LCD/LED driver. It contains all the necessary functions, such as 4-bit parallel
processing ALU, ROM, RAM, I/O ports, timer, clock generator, dual clock, EL
light, LCD driver, look-up table, watchdog timer and keyboard scanning in a
signal chip.
FEATURES1. 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.
. Table look-up.
. 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.