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TM89P59M is a One Time PROM embedded high-performance 4-bit 
microcomputer with LCD driver. It contains all the necessary functions, such as 
4-bit parallel processing ALU, ROM, RAM, I/O ports, timer, clock generator, dual
clock operation, Resistance to Frequency Converter (RFC), EL panel driver,
LCD driver, look-up table, watchdog timer and key matrix scanning circuitry in
a signal chip.

1.	Low power dissipation. 
	1.5V/3V operating voltage range.
2.	Powerful instruction set.
	Binary addition, subtraction, BCD adjustment. BCD can be 
          executed directly in addition/subtraction operations.
	4 bits x 4 bits Multiplier.
	Single-bit manipulation (set, reset, decision for branch).
	Various conditional branches.
	16 initial working registers and manipulators (can be extended to 
          all RAM with Page Mode).
	Look-up Table.
	LCD driver data transfer. 
3.	ROM Capacity.                           32K     x     16 bits.
	Instruction ROM Max. Capacity           32K     x     16 bits.
	Table ROM Max. Capacity             32K/16K     x   8/16 bits.
4.	RAM Capacity.                      6K/3K/1.5K   x 4/8/16 bits.
	LCD Max. Capacity                 256/128/64    x 4/8/16 bits.
	STACK Max. Capacity	                 16      x     16 bits.
	HL/ZR store Max. Capacity            16/16      x     16 bits.
5.	With direct/index addressing mode in data RAM access. 
6.	LCD driver output.
	16 common outputs and 64 segment outputs. 
	1/4 ~ 1/16 Duty can be selected by mask option.
	1/3 ~ 1/5 Bias can be selected by mask option.
	Single instruction to turn off all segments.
	COM5 ~ 16 can be defined as CMOS or P_open drain type 
                output port by mask option.
	External regulator mode for VL1/2 by mask option.
7.	Input/output ports.
	Port IOA	4 pins (with internal pull-low, input signal chattering
                prevention circuitry). 
	Port IOB	4 pins (with internal pull-low), and can be defined as
                KI1 ~ 4 by mask option.
	Port IOC	4 pins (with internal pull-low, low-level-hold, input 
                signal chattering prevention circuitry).
	Port IOD	4 pins (with internal pull-low, input signal chattering 
                prevention circuitry)
	Port IOE	4 pins (with internal pull-low).
8.	Interrupt function.
	External factors   5   (INT pin, Port IOA, IOC, IOD & KI input).
	Internal factors    5   (Pre-Divider, Timer1, Timer2, Timer3 & RFC).
9.	Built-in EL-light driver.
10.	Built-in Alarm, clock or single tone melody generator.
11.	Built-in resistance to frequency converter.
	CX, CX2, RFC0 ~ 5
12.	Built-in key matrix scanning function.
	KO1 ~ KO16 (Shared with SEG1 ~ 16)
	KI1 ~ KI4 (Can be defined as IOB1 ~ 4 by mask option)
13.	Three 6-bit programmable timers with programmable clock 
	Read the content at any time
	Merge 2 or 3 timers into one 12-bit or 18-bit timer
	Used as a counter for RFC
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 mask option.
	Fast clock oscillation can be defined as 3.58 MHz ceramic 
                resonator, internal R or external R type oscillator by mask option.
17.	HALT function.
18.	STOP function.
Timer / Calendar / Calculator / Thermometer

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