GENERAL DESCRIPTIONTM89P59M 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.
FEATURES1. 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.
ELC, ELP
10. Built-in Alarm, clock or single tone melody generator.
BZB, BZ
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
source.
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.
APPLICATIONTimer / Calendar / Calculator / Thermometer