1. Low power dissipation.
1.5V/3V operating voltage range.
TM87ML22L 1.5V Power Mode
TM87ML22H 3V Power Mode
2. Powerful instruction set.
Binary addition, subtraction, BCD. BCD can be executed directly in addition, subtraction.
Single-bit manipulation (set, reset, decision for branch).
Various conditional branches.
16 initial working registers and manipulators.
LCD driver data transfer.
3. ROM(MTP) capacity. 2K x 16 bits.
Instruction ROM Max. capacity 2K x 16 bits.
Table ROM Max. capacity 3840 x 8 bits.
Endurance: 1000 cycles (min.)
4. RAM capacity. 128 x 4bits.
5. With direct/index addressing mode in data RAM access.
6. LCD driver output.
Max 175 LCD dots by 5 common outputs and 35 segment outputs.
SEG24~35 can be defined as IOA1~4/CX, RR, RT, RH, IOB1~4/ELC, ELP, BZB, BZ,
IOC/KI1~4 by option.
1/1~1/5 Duty can be selected by option.
1/2 ~1/3 Bias can be selected by option.
Single instruction to turn off all segments.
COM1~5, SEG1~35 can be defined as CMOS or P_open drain type output by option(COM1 & SEG35 force same PSTB & DBUS option for CMOS or P_open drain type output).
Built-in regulator mode for VL1/2 by option.
7. Input/output ports.
Port IOA 4 pins (with internal pull-low), and can be defined as SEG24~27/CX,RR,RT,RH by option.
Port IOB 4 pins (with internal pull-low), and can be defined as SEG28~31/ELC, ELP, BZB, BZ by option.
Port IOC 4 pins (with internal pull-low, low-level-hold, input signal chattering prevention circuitry), and can be defined as SEG32~35/KI1~4 by option.
8. Interrupt function.
External factors 3 (INT pin, Port IOC & KI input).
Internal factors 4 (Pre-Divider, Timer1, Timer2 & RFC).
9. Built-in EL-light driver.
ELC, ELP. Can be defined as SEG28, 29/IOB1, 2 by option.
10. Built-in Alarm, clock or single tone melody generator.
BZB, BZ. Can be defined as SEG30, 31/IOB3, 4 by option.
11. Built-in resistance to frequency converter.
CX, RR, RT, RH. Can be defined as SEG24~27/IOA1~4 by option.
12. Built-in key matrix scanning function.
KO1~KO16 (Shared with SEG1~16)
KI1~KI4. Can be defined as SEG32~35/IOC1~4 by option.
13. Two 6-bit programmable timers with programmable clock source.
Read out the content in anytime
14. Watchdog timer.
15. Built-in voltage charge halver & pump circuit.
16. Dual clock operation
slow clock oscillation can be defined as X’tal or external RC type oscillator by option.
fast clock oscillation can be defined as internal R or external R(Fast Only) type oscillator by option.
17. HALT function.
18. STOP function.
19. Built-in Low Battery Detect.
20. Built-in Low Voltage Reset.