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tenx MCU
> 4-bit MCU
> TM87 series
>MCU
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| TM8724 |
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4-Bit Micro-Controller
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TM8724 Data Sheet (Ver 1.0) (*.pdf)
TM8724 User's Manual(English) Ver 1.1 (*.pdf)
tenx 4-bit Summary (*.pdf)
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Description:
The TM8724 is an 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, LCD driver, look-up table and watchdog timer in a single chip.
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Feature:
1. 1.5V and 3V operations and with low power dissipation.
2. Powerful instruction set (129 instructions).
- Single-bit manipulation (set, reset, decision for branch).
- Various conditional branches.
- 16 working registers and manipulation.
- Table look-up.
- LCD driver data transfer.
3. Memory capacity.
- ROM capacity 1152 x 16 bits.
- RAM capacity 80 x 4 bits.
4. LCD driver output.
- 5 common outputs and 24 segment outputs (up to drive 120 LCD pixels).
- 1/1 Duty, 1/2 Duty, 1/3 Duty, 1/4 Duty or 1/5 Duty is selected by MASK option.
- 1/2 Bias or 1/3 Bias is selected by MASK option.
- Single instruction to turn off all segments and coms.
- Segment output pins (SEG1~12) could be defined as CMOS or P_open drain output type by mask option.
5. Input/output ports.
- Port IOA 4 pins, muxed with SEG24~SEG27.
- 16 LCD address.
- Port IOB 4 pins (with internal pull-low), muxed with SEG28~SEG31.
- Port IOC 4 pins (with internal pull-low), muxed with SEG32~SEG35. IOC port had built in the input signal chattering prevention circuitry.
6. 8 level subroutine nesting.
7. Interrupt function.
- External factor 2 (INT pin, Port IOC).
- Internal factors 2 (Pre-Divider, Timer1).
8. Built in Alarm generator.
- BZB, BZ (Muxed with SEG30, SEG31).
9. One 6-bit programmable timer with programmable clock source.
10. Built-in Voltage doubler, tripler charge pump circuit.
11. Dual clock operation.
12. HALT function.
13. STOP function.
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Applications:
Timer / Calendar / Calculator
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